I am using the GTK greeter for LightDM but the cursor looks very tiny on my laptop's 1080 display. I have already set the DPI setting and some text looks big, but the center input is still small and the cursor remains small, too. I followed some instructions here which advice to use dconf as root, but doing: dconf write /org/gnome/desktop/interface/cursor-size 32 fails saying that the connection is closed. Also, I found out that root isn't supposed to use dconf. I tried dconf-editor with the same results, and /etc/gtk-3.0 doesn't even exist in my system (Fedora 29). What can I do?

I am currently running LightDM on my AlmaLinux 8.8 machine and I wanted to know if it's possible to remove the Other user option as shown below. I have already tried to edit the /etc/lightdm/lightdm.conf file and set the following options, however with no effect:

[Seat:*]
greeter-show-manual-login = false
greeter-allow-guest=false
allow-guests=false

I have restarted the LightDM service after saving my changes and even rebooted my machine, but no luck.

I'm on a Fedora Server 37 iso, so no DM/DE is pre-installed. 1) Install wayland, lightdm, and lightdm-gtk-greeter. 2) Edit lightdm's config to use lightdm-gtk-greeter - (Line 102) change greeter-session=example-gtk-gnome to greeter-session=lightdm-gtk-greeter - (Line 107) change user-session=default to user-session=qtile 3) Try to start graphical.target, and it fails. - From sudo tail -n100 /var/log/lightdm/lightdm.log, here's a chunk of the relevant part. It tries to start an xserver, even though I don't have one installed and want to use wayland instead. I can't find a config option to tell it to use wayland either. Did I miss it, or is there another way to do this?

[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
    [+0.00s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ‘gio-vfs’
    [+0.00s] DEBUG: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)
    [+0.00s] DEBUG: Monitoring logind for seats
    [+0.00s] DEBUG: New seat added from logind: seat0
    [+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:*
    [+0.00s] DEBUG: Seat seat0 has property CanMultiSession=no
    [+0.00s] DEBUG: Seat seat0: Starting
    [+0.00s] DEBUG: Seat seat0: Creating greeter session
    [+0.00s] DEBUG: Seat seat0: Creating display server of type x
    [+0.00s] DEBUG: Using VT 1
    [+0.00s] DEBUG: Seat seat0: Starting local X display on VT 1
    [+0.00s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
    [+0.00s] DEBUG: XServer 0: Can't launch X server X -core -noreset, not found in path
    [+0.00s] DEBUG: XServer 0: X server stopped
    [+0.00s] DEBUG: Releasing VT 1
    [+0.00s] DEBUG: Seat seat0: Display server stopped
    [+0.00s] DEBUG: Seat seat0: Can't create display server for greeter
    [+0.00s] DEBUG: Seat seat0: Session stopped
    [+0.00s] DEBUG: Seat seat0: Stopping display server, no sessions require it
    [+0.00s] DEBUG: Seat seat0: Stopping
    [+0.00s] DEBUG: Seat seat0: Stopped
    [+0.00s] DEBUG: Failed to start seat: seat0

Edit: [This github issue](https://github.com/canonical/lightdm/issues/268#issue-1382510272) is someone's log that gets a lot farther than I do. My log above, you see Seat seat0: Creating display server of type x, but theirs is type wayland. This is the main thing I'd like to figure out. However later in their log, they call /etc/lightdm/Xsession ... still too. Is there a way to install a tiny subset of x11 to work, or do I need an entire x server package along with wayland to get LightDM running?

Recently a kernel upgrade to 4.19.0-5amd64 broke my desktop environment and produced other problems, some of them I already asked here - [Unmet broken dependencies debian](https://unix.stackexchange.com/questions/533871/unmet-broken-dependencies-debian) and [radeon failed vce resume after upgrade to newest Linux kernel](https://unix.stackexchange.com/questions/533842/radeon-failed-vce-resume-after-upgrade-to-newest-linux-kernel) . Those are now resolved, but other issues remain. When I installed xfce4 with lightdm on the system, I cannot move past the login screen. I know there are related topics ([Login screen reappears after login](https://unix.stackexchange.com/questions/55176/login-screen-reappears-after-login) , [Screen blanks at login screen](https://unix.stackexchange.com/questions/208091/screen-blanks-at-login-screen) , ...) here but they didn't help me much. Suspicious messages found in log files: 1. $HOME/.xsession-errors > OpenSSL version mismatch. Built against 1010102f, you have 1010000f 2. var/log/lightdm/seat0-greeter.log > ** (lightdm-gtk-greeter:719): WARNING ** [PIDs] Failed to execute command upstart At same time I can login to *tty*. Also, my user is in *tty* group. I tried to remove *.Xauthority* file - nothing changed. What might be a reason of that I cannot login? Any ideas how I can fix it? Here is full content of some log files. **/var/log/lightdm/lightdm.log** [+0.02s] DEBUG: Logging to /var/log/lightdm/lightdm.log [+0.02s] DEBUG: Starting Light Display Manager 1.26.0, UID=0 PID=682 [+0.02s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d [+0.02s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/01_debian.conf [+0.02s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d [+0.02s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d [+0.02s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf [+0.02s] DEBUG: Registered seat module local [+0.02s] DEBUG: Registered seat module xremote [+0.02s] DEBUG: Registered seat module unity [+0.02s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager [+0.21s] DEBUG: Monitoring logind for seats [+0.21s] DEBUG: New seat added from logind: seat0 [+0.21s] DEBUG: Seat seat0: Loading properties from config section Seat:* [+0.21s] DEBUG: Seat seat0: Starting [+0.21s] DEBUG: Seat seat0: Creating greeter session [+0.34s] DEBUG: Seat seat0: Creating display server of type x [+0.34s] DEBUG: posix_spawn avoided (fd close requested) [+0.34s] DEBUG: Could not run plymouth --ping: Failed to execute child process “plymouth” (No such file or directory) [+0.34s] DEBUG: Using VT 7 [+0.34s] DEBUG: Seat seat0: Starting local X display on VT 7 [+0.34s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log [+0.35s] DEBUG: XServer 0: Writing X server authority to /var/run/lightdm/root/:0 [+0.35s] DEBUG: XServer 0: Launching X Server [+0.43s] DEBUG: Launching process 694: /usr/bin/X :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch [+0.44s] DEBUG: XServer 0: Waiting for ready signal from X server :0 [+0.44s] DEBUG: Acquired bus name org.freedesktop.DisplayManager [+0.44s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0 [+0.84s] DEBUG: Loading users from org.freedesktop.Accounts [+0.84s] DEBUG: User /org/freedesktop/Accounts/User1001 added [+1.82s] DEBUG: User /org/freedesktop/Accounts/User1000 added [+1.83s] DEBUG: posix_spawn avoided (automatic reaping requested) (fd close requested) [+9.21s] DEBUG: Got signal 10 from process 694 [+9.21s] DEBUG: XServer 0: Got signal from X server :0 [+9.21s] DEBUG: XServer 0: Connecting to XServer :0 [+9.24s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified) [+9.24s] DEBUG: Seat seat0: Display server ready, starting session authentication [+9.24s] DEBUG: Session pid=737: Started with service 'lightdm-greeter', username 'lightdm' [+9.40s] DEBUG: Session pid=737: Authentication complete with return value 0: Success [+9.40s] DEBUG: Seat seat0: Session authenticated, running command [+9.40s] DEBUG: Session pid=737: Running command /usr/sbin/lightdm-gtk-greeter [+9.40s] DEBUG: Creating shared data directory /var/lib/lightdm/data/lightdm [+9.40s] DEBUG: Session pid=737: Logging to /var/log/lightdm/seat0-greeter.log [+10.18s] DEBUG: Activating VT 7 [+10.18s] DEBUG: Activating login1 session c1 [+10.18s] DEBUG: Seat seat0 changes active session to c1 [+10.18s] DEBUG: Session c1 is already active [+12.22s] DEBUG: Greeter connected version=1.26.0 api=1 resettable=false [+14.64s] DEBUG: Greeter start authentication [+14.64s] DEBUG: Session pid=782: Started with service 'lightdm', username '(null)' [+14.70s] DEBUG: Session pid=782: Got 1 message(s) from PAM [+14.70s] DEBUG: Prompt greeter with 1 message(s) [+26.03s] DEBUG: Greeter start authentication for slesh [+26.03s] DEBUG: Session pid=782: Sending SIGTERM [+26.03s] DEBUG: Session pid=784: Started with service 'lightdm', username 'slesh' [+26.03s] DEBUG: Session pid=782: Terminated with signal 15 [+26.03s] DEBUG: Session: Failed during authentication [+26.03s] DEBUG: Seat seat0: Session stopped [+26.05s] DEBUG: Session pid=784: Got 1 message(s) from PAM [+26.05s] DEBUG: Prompt greeter with 1 message(s) [+32.28s] DEBUG: Continue authentication [+32.31s] DEBUG: Session pid=784: Authentication complete with return value 0: Success [+32.31s] DEBUG: Authenticate result for user slesh: Success [+32.31s] DEBUG: User slesh authorized [+32.32s] DEBUG: Greeter sets language en_US.utf8 [+32.40s] DEBUG: Greeter requests session lightdm-xsession [+32.40s] DEBUG: Seat seat0: Stopping greeter; display server will be re-used for user session [+32.40s] DEBUG: Terminating login1 session c1 [+32.41s] DEBUG: Session pid=737: Sending SIGTERM [+32.57s] DEBUG: Greeter closed communication channel [+32.57s] DEBUG: Session pid=737: Exited with return value 0 [+32.57s] DEBUG: Seat seat0: Session stopped [+32.57s] DEBUG: Seat seat0: Greeter stopped, running session [+32.57s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session0 [+32.57s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified) [+32.57s] DEBUG: Session pid=784: Running command /etc/X11/Xsession default [+32.57s] DEBUG: Creating shared data directory /var/lib/lightdm/data/slesh [+32.57s] DEBUG: Session pid=784: Logging to .xsession-errors [+32.74s] DEBUG: Activating VT 7 [+32.74s] DEBUG: Activating login1 session 2 [+32.74s] DEBUG: Seat seat0 changes active session to [+32.74s] DEBUG: Seat seat0 changes active session to 2 [+32.74s] DEBUG: Session 2 is already active [+34.10s] DEBUG: Session pid=784: Exited with return value 255 [+34.10s] DEBUG: Seat seat0: Session stopped [+34.10s] DEBUG: Seat seat0: Stopping display server, no sessions require it [+34.10s] DEBUG: Sending signal 15 to process 694 [+34.12s] DEBUG: Seat seat0 changes active session to [+35.23s] DEBUG: Process 694 exited with return value 0 [+35.23s] DEBUG: XServer 0: X server stopped [+35.23s] DEBUG: Releasing VT 7 [+35.23s] DEBUG: XServer 0: Removing X server authority /var/run/lightdm/root/:0 [+35.23s] DEBUG: Seat seat0: Display server stopped [+35.23s] DEBUG: Seat seat0: Active display server stopped, starting greeter [+35.23s] DEBUG: Seat seat0: Creating greeter session [+35.23s] DEBUG: Seat seat0: Creating display server of type x [+35.23s] DEBUG: Using VT 7 [+35.23s] DEBUG: Seat seat0: Starting local X display on VT 7 [+35.23s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log [+35.23s] DEBUG: XServer 0: Writing X server authority to /var/run/lightdm/root/:0 [+35.23s] DEBUG: XServer 0: Launching X Server [+35.23s] DEBUG: Launching process 836: /usr/bin/X :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch [+35.23s] DEBUG: XServer 0: Waiting for ready signal from X server :0 [+35.97s] DEBUG: Got signal 10 from process 836 [+35.97s] DEBUG: XServer 0: Got signal from X server :0 [+35.97s] DEBUG: XServer 0: Connecting to XServer :0 [+36.00s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified) [+36.00s] DEBUG: Seat seat0: Display server ready, starting session authentication [+36.00s] DEBUG: Session pid=851: Started with service 'lightdm-greeter', username 'lightdm' [+36.03s] DEBUG: Session pid=851: Authentication complete with return value 0: Success [+36.03s] DEBUG: Seat seat0: Session authenticated, running command [+36.03s] DEBUG: Session pid=851: Running command /usr/sbin/lightdm-gtk-greeter [+36.03s] DEBUG: Creating shared data directory /var/lib/lightdm/data/lightdm [+36.03s] DEBUG: Session pid=851: Logging to /var/log/lightdm/seat0-greeter.log [+36.06s] DEBUG: Activating VT 7 [+36.06s] DEBUG: Activating login1 session c2 [+36.06s] DEBUG: Seat seat0 changes active session to c2 [+36.06s] DEBUG: Session c2 is already active [+36.17s] DEBUG: Greeter connected version=1.26.0 api=1 resettable=false [+36.40s] DEBUG: Greeter start authentication [+36.40s] DEBUG: Session pid=867: Started with service 'lightdm', username '(null)' [+36.41s] DEBUG: Session pid=867: Got 1 message(s) from PAM [+36.41s] DEBUG: Prompt greeter with 1 message(s) [+52.16s] DEBUG: Got signal 15 from process 1 [+52.16s] DEBUG: Caught Terminated signal, shutting down [+52.16s] DEBUG: Stopping display manager [+52.16s] DEBUG: Seat seat0: Stopping [+52.16s] DEBUG: Seat seat0: Stopping display server [+52.16s] DEBUG: Sending signal 15 to process 836 [+52.16s] DEBUG: Seat seat0: Stopping session [+52.16s] DEBUG: Terminating login1 session c2 [+52.21s] DEBUG: Session pid=851: Sending SIGTERM [+52.21s] DEBUG: Seat seat0: Stopping session [+52.21s] DEBUG: Session pid=867: Sending SIGTERM [+52.21s] DEBUG: Session pid=867: Terminated with signal 15 [+52.21s] DEBUG: Session: Failed during authentication [+52.21s] DEBUG: Seat seat0: Session stopped [+52.45s] DEBUG: Greeter closed communication channel [+52.45s] DEBUG: Session pid=851: Exited with return value 0 [+52.45s] DEBUG: Seat seat0: Session stopped [+52.46s] DEBUG: Seat seat0 changes active session to [+53.22s] DEBUG: Process 836 exited with return value 0 [+53.22s] DEBUG: XServer 0: X server stopped [+53.22s] DEBUG: Releasing VT 7 [+53.22s] DEBUG: XServer 0: Removing X server authority /var/run/lightdm/root/:0 [+53.22s] DEBUG: Seat seat0: Display server stopped [+53.22s] DEBUG: Seat seat0: Stopped [+53.22s] DEBUG: Display manager stopped [+53.22s] DEBUG: Stopping daemon [+53.22s] DEBUG: Exiting with return value 0 **/var/log/lightdm/seat0-greeter.log** ** Message: 16:44:27.363: Starting lightdm-gtk-greeter 2.0.6 (Dec 27 2018, 16:15:47) ** Message: 16:44:27.364: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_debian.conf ** Message: 16:44:27.364: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf ** (lightdm-gtk-greeter:854): WARNING **: 16:44:27.460: [PIDs] Failed to execute command: upstart (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:27.675: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:37.582: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:40.964: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:40.994: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.017: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.032: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.051: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.066: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.082: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.098: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.115: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.858: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.874: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:41.890: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) (lightdm-gtk-greeter:854): Gtk-WARNING **: 16:44:43.397: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar) Gdk-Message: 16:44:43.424: lightdm-gtk-greeter: Fatal IO error 4 (Interrupted system call) on X server :0. **/var/log/lightdm/x-0.log** X.Org X Server 1.20.4 X Protocol Version 11, Revision 0 Build Operating System: Linux 4.9.0-8-amd64 x86_64 Debian Current Operating System: Linux debian 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u2 (2019-08-08) x86_64 Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.19.0-5-amd64 root=UUID=d666ae35-4c82-44d3-bf21-0c2b4f4fd21b ro quiet Build Date: 05 March 2019 08:11:12PM xorg-server 2:1.20.4-1 (https://www.debian.org/support) Current version of pixman: 0.36.0 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Sun Aug 11 16:44:26 2019 (==) Using system config directory "/usr/share/X11/xorg.conf.d" (II) AMDGPU(G0): [KMS] Kernel modesetting enabled. (II) modeset(0): Initializing kms color map for depth 24, 8 bpc. (II) Server terminated successfully (0). Closing log file. **.xsession-errors** Xsession: X session started for slesh at Sun 11 Aug 2019 04:44:24 PM +03 dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus dbus-update-activation-environment: setting DISPLAY=:0 dbus-update-activation-environment: setting XAUTHORITY=/home/slesh/.Xauthority localuser:slesh being added to access control list dbus-update-activation-environment: setting QT_ACCESSIBILITY=1 dbus-update-activation-environment: setting USER=slesh dbus-update-activation-environment: setting LANGUAGE=en_US:en dbus-update-activation-environment: setting XDG_SESSION_TYPE=x11 dbus-update-activation-environment: setting HOME=/home/slesh dbus-update-activation-environment: setting DESKTOP_SESSION=lightdm-xsession dbus-update-activation-environment: setting XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0 dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus dbus-update-activation-environment: setting LOGNAME=slesh dbus-update-activation-environment: setting XDG_SESSION_CLASS=user dbus-update-activation-environment: setting PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games dbus-update-activation-environment: setting GDM_LANG=en_US.utf8 dbus-update-activation-environment: setting XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0 dbus-update-activation-environment: setting XDG_RUNTIME_DIR=/run/user/1000 dbus-update-activation-environment: setting DISPLAY=:0 dbus-update-activation-environment: setting LANG=en_US.UTF-8 dbus-update-activation-environment: setting XDG_SESSION_DESKTOP=lightdm-xsession dbus-update-activation-environment: setting XAUTHORITY=/home/slesh/.Xauthority dbus-update-activation-environment: setting XDG_GREETER_DATA_DIR=/var/lib/lightdm/data/slesh dbus-update-activation-environment: setting SHELL=/bin/bash dbus-update-activation-environment: setting GDMSESSION=lightdm-xsession dbus-update-activation-environment: setting QT_ACCESSIBILITY=1 dbus-update-activation-environment: setting GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1 dbus-update-activation-environment: setting PWD=/home/slesh dbus-update-activation-environment: setting XDG_DATA_DIRS=/usr/share/xfce4:/usr/local/share/:/usr/share/ OpenSSL version mismatch. Built against 1010102f, you have 1010000f

I have just come from Ubuntu so getting used to Arch at the moment. I have installed the cinnamon DE and lightdm. However whenever I boot into cinnamon I get a dialog telling me to check my drivers, that I am running in software mode. I have the pacman package containing the nvidia drivers installed and as per the instruction on the arch wiki I have added nvidia modules to mkinitcpio. Unfortunately Cinnamon doesn't detect the drivers provided by the nvidia pacman package. I have tried all the solutions I can find but to no avail, and am hesitant to use the Nvidia .run file because apparently it's bad practise or something..? Any help is appreciated thank you

I am running Xubuntu 18.04. When I lock the session, the screen gets turned off instantly. I am using stock lightdm as display manager and lightlocker for locking the session. From my viewpoint the following sequence of events happens. 1. I initiate locking by running xflock4 via keyboard shortcut or clicking "Lock Screen" in the Whisker (Main) menu. 2. VT8 becomes active, a new lightdm greeter is spawned on this VT terminal and physical screen turns off at the same time. 3. My usual VT7 terminal gets seized in background with lightlocker which draws "This session is locked" screen. If press some button on the keyboard or move the mouse, the screen turns on. If I press Control-Alt-F7, I see lightlocker lock screen in my original session. If I press Control-Alt-F8 I go back to the greeter where I can enter my password. After entering the password, VT7 becomes active and lightlocker white-on-black lock screen is no longer shown. If I later go back to VT8 with Control-Alt-F8, I see a completely black screen with only a blinking cursor (seems to be in text mode). If the session timeouts and gets locked automatically, I also end up with the screen turned off. That can happen several times a day. I am using an external monitor which is very slow to turn on again. It takes around 10 seconds and that is quite annoying every single time. I would rather keep it on for an hour or more on password dialog before timing it out and turning off automatically. Also there is a non-zero chance of getting a system freeze due to buggy Intel (KMS?) drivers when doing VT switch and turning of the screen at *almost* the same time. I skimmed through lightdm and lightdm greeter docs and found no hints on how to prevent that. **Update 1** 1. I discovered an "Action" applet for the xfce4-panel that can "switch" user sessions without turning off the screen. This essentially locks the session with light-locker and shows greeter on a new VT. After some digging I discovered a command to show greeter, dm-tool switch-to-greeter. I have reassigned keyboard shortcut to lock the screen from xflock4 to dm-tool switch-to-greeter as workaround. But the problem with automatic locking and turning screen still annoys me. What is interesting that dm-tool lock and light-locker-command --lock (xflock4 calls it) behave the same and produce a turned off monitor. 1. If I uninstall light-locker (with full reboot) and do dm-tool lock, the screen also turns off. So this should not be related to light-locker... **Update 2** The question is how to keep screen turned on when locking the session via light-locker on timeout or locking manually with xflock4, not on how to disable timeouts for locking.

I am using lightdm with Xfce and when I change language in the greater and login Xfce uses old setting. However, after logout and another login language is properly changed and Xfce uses intended language. It looks like there is one login lag. How can I fix that?

I installed deepin on Arch (fresh install) and it just isn't working, I can't log in, when I start the lightdm.service, it just shows blank white screen. I haven't enable the service yet. I was just checking if it worked and its not working.

I've been using Awesome+LightDM with the GTK greeter on Arch Linux for some years, and I'm in the process of moving to NixOS. One issue with this has been the screen locker. I've mapped Windows-l to light-locker-command --lock . When activating that the screen goes black, then turns off. To get back to LightDM I have to press Ctrl-Alt-F7 and wait for about 10 seconds while some weird message about "being redirected to the unlock dialog" displays. I've tried installing and enabling both the "gtk" and "mini" greeters (not at the same time), but after restarting X neither of these seem to be used. How do I set either of them up? The relevant part of the configuration : services = { xserver = { displayManager.lightdm.enable = true; enable = true; layout = "us"; libinput.enable = true; windowManager = { awesome.enable = true; default = "awesome"; }; xkbOptions = "compose:caps"; xkbVariant = "dvorak-alt-intl"; }; }; I also tried enabling programs.slock, but that doesn't integrate with lightdm.

So I've messed my windows managers, xinitrc and greeters when I type startx it shows dozens of errors so can someone please tell me how to list what window-managers and login-sessions/greeters I've installed (so that I can Remove and freshly install one) thanx

I switched from xfce4 to i3 a while ago. The first go through, everything worked fine. I then had to reinstall i3 for some reason, and I can no longer enter i3 through lightdm-gtk-greeter. I have to drop into tty2 and manually startx. The greeter launches fine, but then I have a black screen with just a mouse and none of the i3 commands work. Notably, if I uncomment the autologin lines in lightdm.conf, I can boot straight to i3. I do want to have my computer password protected, though. ###.bash_profile # # ~/.bash_profile # [[ -f ~/.bashrc ]] && . ~/.bashrc if [[ ! $DISPLAY && $XDG_VTNR -eq 1 ]]; then exec startx fi ###/etc/lightdm/lightdm.conf # # General configuration # [LightDM] run-directory=/run/lightdm [Seat:*] greeter-session=lightdm-gtk-greeter user-session=i3 session-wrapper=/etc/lightdm/Xsession [XDMCPServer] [VNCServer]

I have Manjaro/XFCE/LightDM and a GeForce GT 710 and I followed [this guide](https://wiki.archlinux.org/index.php/NVIDIA/Troubleshooting#Avoid_screen_tearing) to get rid of tearing. I added those three lines to my X-configuration. After I log in in the greeter the screen only shows the background image and the mouse cursor. After I press Ctrl+Alt+F2 and Ctrl+Alt+F7 I can see the desktop and the applications that auto-start. Without the three lines desktop and applications are visible right away. Yes, I googled. My X-configurations: /etc/X11/xorg.conf: # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 375.26 (buildmeister@swio-display-x86-rhel47-01) Thu Dec 8 19:07:46 PST 2016 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" Option "metamodes" "nvidia-auto-select +0+0 { ForceFullCompositionPipeline = On }" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection EndSection /etc/X11/xorg.conf.d/00-keyboard.conf # Read and parsed by systemd-localed. It's probably wise not to edit this file # manually too freely. Section "InputClass" Identifier "system-keyboard" MatchIsKeyboard "on" Option "XkbLayout" "de" Option "XkbModel" "pc105" Option "XkbOptions" "terminate:ctrl_alt_bksp,grp:alt_shift_toggle" EndSection /etc/X11/xorg.conf.d/90-mhwd.conf # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 375.26 (buildmeister@swio-display-x86-rhel47-01) Thu Dec 8 19:07:46 PST 2016 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" Option "NoLogo" "1" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection Option "metamodes" "nvidia-auto-select +0+0 { ForceFullCompositionPipeline = On }" Option "AllowIndirectGLXProtocol" "off" Option "TripleBuffer" "on" EndSection Section "Extensions" Option "Composite" "Enable" EndSection Section "InputClass" Identifier "Keyboard Defaults" MatchIsKeyboard "yes" Option "XkbOptions" "terminate:ctrl_alt_bksp" EndSection /var/log/Xorg.0.log: [ 13766.904] X.Org X Server 1.20.1 X Protocol Version 11, Revision 0 [ 13766.904] Build Operating System: Linux Arch Linux [ 13766.904] Current Operating System: Linux runlikehell 4.14.66-1-MANJARO #1 SMP PREEMPT Wed Aug 22 21:45:26 UTC 2018 x86_64 [ 13766.904] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.14-x86_64 root=UUID=6ddc54eb-3d4c-4bab-b2b9-9a3e01d25a7a rw resume=UUID=3290b951-2ffd-4a02-b65c-19a4b8a9962c quiet splash [ 13766.904] Build Date: 09 August 2018 06:37:34PM [ 13766.904] [ 13766.904] Current version of pixman: 0.34.0 [ 13766.904] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 13766.904] Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 13766.904] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Aug 31 17:29:08 2018 [ 13766.904] (==) Using config file: "/etc/X11/xorg.conf" [ 13766.904] (==) Using config directory: "/etc/X11/xorg.conf.d" [ 13766.904] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 13766.904] (==) ServerLayout "Layout0" [ 13766.904] (**) |-->Screen "Screen0" (0) [ 13766.904] (**) | |-->Monitor "Monitor0" [ 13766.905] (**) | |-->Device "Device0" [ 13766.905] (**) | |-->GPUDevice "Device0" [ 13766.905] (**) |-->Input Device "Keyboard0" [ 13766.905] (**) |-->Input Device "Mouse0" [ 13766.905] (==) Automatically adding devices [ 13766.905] (==) Automatically enabling devices [ 13766.905] (==) Automatically adding GPU devices [ 13766.905] (==) Automatically binding GPU devices [ 13766.905] (==) Max clients allowed: 256, resource mask: 0x1fffff [ 13766.905] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi". [ 13766.905] Entry deleted from font path. [ 13766.905] (Run 'mkfontdir' on "/usr/share/fonts/100dpi"). [ 13766.905] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi". [ 13766.905] Entry deleted from font path. [ 13766.905] (Run 'mkfontdir' on "/usr/share/fonts/75dpi"). [ 13766.905] (==) FontPath set to: ... [ 13766.905] (==) ModulePath set to "/usr/lib/xorg/modules" [ 13766.905] (WW) Ignoring unrecognized extension "Composite" [ 13766.905] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled. [ 13766.905] (WW) Disabling Keyboard0 [ 13766.905] (WW) Disabling Mouse0 [ 13766.905] (II) Module ABI versions: [ 13766.905] X.Org ANSI C Emulation: 0.4 [ 13766.905] X.Org Video Driver: 24.0 [ 13766.905] X.Org XInput driver : 24.1 [ 13766.905] X.Org Server Extension : 10.0 [ 13766.905] (++) using VT number 7 [ 13766.906] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration [ 13766.906] (II) xfree86: Adding drm device (/dev/dri/card0) [ 13766.907] (**) OutputClass "nvidia" ModulePath extended to "/usr/lib/nvidia/xorg,/usr/lib/xorg/modules,/usr/lib/xorg/modules" [ 13766.907] (**) OutputClass "nvidia" setting /dev/dri/card0 as PrimaryGPU [ 13766.908] (--) PCI:*(1@0:0:0) 10de:128b:1462:8c93 rev 161, Mem @ 0xfd000000/16777216, 0xf0000000/134217728, 0xf8000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/131072 [ 13766.909] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory) [ 13766.909] (II) LoadModule: "glx" [ 13766.909] (II) Loading /usr/lib/nvidia/xorg/libglx.so [ 13766.913] (II) Module glx: vendor="NVIDIA Corporation" [ 13766.913] compiled for 4.0.2, module version = 1.0.0 [ 13766.913] Module class: X.Org Server Extension [ 13766.913] (II) NVIDIA GLX Module 396.54 Tue Aug 14 22:37:05 PDT 2018 [ 13766.913] (II) LoadModule: "nvidia" [ 13766.913] (II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so [ 13766.914] (II) Module nvidia: vendor="NVIDIA Corporation" [ 13766.914] compiled for 4.0.2, module version = 1.0.0 [ 13766.914] Module class: X.Org Video Driver [ 13766.914] (II) NVIDIA dlloader X Driver 396.54 Tue Aug 14 22:15:03 PDT 2018 [ 13766.914] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs [ 13766.940] (II) Loading sub module "fb" [ 13766.940] (II) LoadModule: "fb" [ 13766.941] (II) Loading /usr/lib/xorg/modules/libfb.so [ 13766.941] (II) Module fb: vendor="X.Org Foundation" [ 13766.941] compiled for 1.20.1, module version = 1.0.0 [ 13766.941] ABI class: X.Org ANSI C Emulation, version 0.4 [ 13766.941] (II) Loading sub module "wfb" [ 13766.941] (II) LoadModule: "wfb" [ 13766.941] (II) Loading /usr/lib/xorg/modules/libwfb.so [ 13766.941] (II) Module wfb: vendor="X.Org Foundation" [ 13766.941] compiled for 1.20.1, module version = 1.0.0 [ 13766.941] ABI class: X.Org ANSI C Emulation, version 0.4 [ 13766.941] (II) Loading sub module "ramdac" [ 13766.941] (II) LoadModule: "ramdac" [ 13766.941] (II) Module "ramdac" already built-in [ 13766.944] (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 [ 13766.944] (==) NVIDIA(0): RGB weight 888 [ 13766.944] (==) NVIDIA(0): Default visual is TrueColor [ 13766.944] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) [ 13766.944] (II) Applying OutputClass "nvidia" options to /dev/dri/card0 [ 13766.944] (**) NVIDIA(0): Option "AllowEmptyInitialConfiguration" [ 13766.944] (**) NVIDIA(0): Enabling 2D acceleration [ 13767.226] (--) NVIDIA(0): Valid display device(s) on GPU-0 at PCI:1:0:0 [ 13767.226] (--) NVIDIA(0): CRT-0 [ 13767.226] (--) NVIDIA(0): DFP-0 (boot) [ 13767.226] (--) NVIDIA(0): DFP-1 [ 13767.228] (II) NVIDIA(0): NVIDIA GPU GeForce GT 710 (GK208) at PCI:1:0:0 (GPU-0) [ 13767.228] (--) NVIDIA(0): Memory: 2097152 kBytes [ 13767.228] (--) NVIDIA(0): VideoBIOS: 80.28.a6.00.22 [ 13767.228] (II) NVIDIA(0): Detected PCI Express Link width: 8X [ 13767.230] (--) NVIDIA(GPU-0): CRT-0: disconnected [ 13767.230] (--) NVIDIA(GPU-0): CRT-0: 400.0 MHz maximum pixel clock [ 13767.230] (--) NVIDIA(GPU-0): [ 13767.245] (--) NVIDIA(GPU-0): Acer K242HQL (DFP-0): connected [ 13767.245] (--) NVIDIA(GPU-0): Acer K242HQL (DFP-0): Internal TMDS [ 13767.245] (--) NVIDIA(GPU-0): Acer K242HQL (DFP-0): 330.0 MHz maximum pixel clock [ 13767.245] (--) NVIDIA(GPU-0): [ 13767.245] (--) NVIDIA(GPU-0): DFP-1: disconnected [ 13767.245] (--) NVIDIA(GPU-0): DFP-1: Internal TMDS [ 13767.245] (--) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock [ 13767.245] (--) NVIDIA(GPU-0): [ 13767.248] (==) NVIDIA(0): [ 13767.248] (==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select" [ 13767.248] (==) NVIDIA(0): will be used as the requested mode. [ 13767.248] (==) NVIDIA(0): [ 13767.248] (II) NVIDIA(0): Validated MetaModes: [ 13767.248] (II) NVIDIA(0): "DFP-0:nvidia-auto-select" [ 13767.248] (II) NVIDIA(0): Virtual screen size determined to be 1920 x 1080 [ 13767.251] (--) NVIDIA(0): DPI set to (93, 94); computed from "UseEdidDpi" X config [ 13767.251] (--) NVIDIA(0): option [ 13767.252] (II) NVIDIA: Using 6144.00 MB of virtual memory for indirect memory [ 13767.252] (II) NVIDIA: access. [ 13767.254] (II) NVIDIA(0): ACPI: failed to connect to the ACPI event daemon; the daemon [ 13767.254] (II) NVIDIA(0): may not be running or the "AcpidSocketPath" X [ 13767.254] (II) NVIDIA(0): configuration option may not be set correctly. When the [ 13767.254] (II) NVIDIA(0): ACPI event daemon is available, the NVIDIA X driver will [ 13767.255] (II) NVIDIA(0): try to use it to receive ACPI event notifications. For [ 13767.255] (II) NVIDIA(0): details, please see the "ConnectToAcpid" and [ 13767.255] (II) NVIDIA(0): "AcpidSocketPath" X configuration options in Appendix B: X [ 13767.255] (II) NVIDIA(0): Config Options in the README. [ 13767.275] (II) NVIDIA(0): Setting mode "DFP-0:nvidia-auto-select" [ 13767.284] (==) NVIDIA(0): Disabling shared memory pixmaps [ 13767.284] (==) NVIDIA(0): Backing store enabled [ 13767.284] (==) NVIDIA(0): Silken mouse disabled [ 13767.284] (**) NVIDIA(0): DPMS enabled [ 13767.285] (WW) NVIDIA(0): Option "PrimaryGPU" is not used [ 13767.285] (WW) NVIDIA(0): Option "NoLogo" is not used [ 13767.285] (II) Loading sub module "dri2" [ 13767.285] (II) LoadModule: "dri2" [ 13767.285] (II) Module "dri2" already built-in [ 13767.285] (II) NVIDIA(0): [DRI2] Setup complete [ 13767.285] (II) NVIDIA(0): [DRI2] VDPAU driver: nvidia [ 13767.285] (II) Initializing extension Generic Event Extension [ 13767.285] (II) Initializing extension SHAPE [ 13767.285] (II) Initializing extension MIT-SHM [ 13767.285] (II) Initializing extension XInputExtension [ 13767.285] (II) Initializing extension XTEST [ 13767.285] (II) Initializing extension BIG-REQUESTS [ 13767.286] (II) Initializing extension SYNC [ 13767.286] (II) Initializing extension XKEYBOARD [ 13767.286] (II) Initializing extension XC-MISC [ 13767.286] (II) Initializing extension SECURITY [ 13767.286] (II) Initializing extension XFIXES [ 13767.286] (II) Initializing extension RENDER [ 13767.286] (II) Initializing extension RANDR [ 13767.287] (II) Initializing extension COMPOSITE [ 13767.287] (II) Initializing extension DAMAGE [ 13767.287] (II) Initializing extension MIT-SCREEN-SAVER [ 13767.287] (II) Initializing extension DOUBLE-BUFFER [ 13767.287] (II) Initializing extension RECORD [ 13767.287] (II) Initializing extension DPMS [ 13767.287] (II) Initializing extension Present [ 13767.287] (II) Initializing extension DRI3 [ 13767.287] (II) Initializing extension X-Resource [ 13767.287] (II) Initializing extension XVideo [ 13767.288] (II) Initializing extension XVideo-MotionCompensation [ 13767.288] (II) Initializing extension XFree86-VidModeExtension [ 13767.288] (II) Initializing extension XFree86-DGA [ 13767.288] (II) Initializing extension XFree86-DRI [ 13767.288] (II) Initializing extension DRI2 [ 13767.288] (II) Initializing extension GLX [ 13767.288] (II) Initializing extension GLX [ 13767.288] (II) Indirect GLX disabled. [ 13767.288] (II) Initializing extension NV-GLX [ 13767.288] (II) Initializing extension NV-CONTROL [ 13767.288] (II) Initializing extension XINERAMA [ 13767.328] (II) config/udev: Adding input device Power Button (/dev/input/event2) [ 13767.328] (**) Power Button: Applying InputClass "libinput keyboard catchall" [ 13767.328] (**) Power Button: Applying InputClass "system-keyboard" [ 13767.328] (**) Power Button: Applying InputClass "Keyboard Defaults" [ 13767.328] (II) LoadModule: "libinput" [ 13767.328] (II) Loading /usr/lib/xorg/modules/input/libinput_drv.so [ 13767.330] (II) Module libinput: vendor="X.Org Foundation" [ 13767.330] compiled for 1.20.0, module version = 0.28.0 [ 13767.330] Module class: X.Org XInput Driver [ 13767.330] ABI class: X.Org XInput driver, version 24.1 [ 13767.330] (II) Using input driver 'libinput' for 'Power Button' [ 13767.330] (**) Power Button: always reports core events [ 13767.330] (**) Option "Device" "/dev/input/event2" [ 13767.330] (**) Option "_source" "server/udev" [ 13767.330] (II) event2 - Power Button: is tagged by udev as: Keyboard [ 13767.330] (II) event2 - Power Button: device is a keyboard [ 13767.330] (II) event2 - Power Button: device removed [ 13767.342] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2/event2" [ 13767.342] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6) [ 13767.342] (**) Option "xkb_model" "pc105" [ 13767.342] (**) Option "xkb_layout" "de" [ 13767.342] (**) Option "xkb_options" "terminate:ctrl_alt_bksp" [ 13767.365] (II) event2 - Power Button: is tagged by udev as: Keyboard [ 13767.365] (II) event2 - Power Button: device is a keyboard [ 13767.365] (II) config/udev: Adding input device Video Bus (/dev/input/event3) [ 13767.365] (**) Video Bus: Applying InputClass "libinput keyboard catchall" [ 13767.365] (**) Video Bus: Applying InputClass "system-keyboard" [ 13767.365] (**) Video Bus: Applying InputClass "Keyboard Defaults" [ 13767.365] (II) Using input driver 'libinput' for 'Video Bus' [ 13767.365] (**) Video Bus: always reports core events [ 13767.365] (**) Option "Device" "/dev/input/event3" [ 13767.365] (**) Option "_source" "server/udev" [ 13767.366] (II) event3 - Video Bus: is tagged by udev as: Keyboard [ 13767.366] (II) event3 - Video Bus: device is a keyboard [ 13767.366] (II) event3 - Video Bus: device removed [ 13767.402] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:03/LNXVIDEO:01/input/input3/event3" [ 13767.402] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7) [ 13767.402] (**) Option "xkb_model" "pc105" [ 13767.402] (**) Option "xkb_layout" "de" [ 13767.402] (**) Option "xkb_options" "terminate:ctrl_alt_bksp" [ 13767.403] (II) event3 - Video Bus: is tagged by udev as: Keyboard [ 13767.403] (II) event3 - Video Bus: device is a keyboard [ 13767.403] (II) config/udev: Adding input device Power Button (/dev/input/event1) [ 13767.403] (**) Power Button: Applying InputClass "libinput keyboard catchall" [ 13767.403] (**) Power Button: Applying InputClass "system-keyboard" [ 13767.403] (**) Power Button: Applying InputClass "Keyboard Defaults" [ 13767.403] (II) Using input driver 'libinput' for 'Power Button' [ 13767.403] (**) Power Button: always reports core events [ 13767.403] (**) Option "Device" "/dev/input/event1" [ 13767.403] (**) Option "_source" "server/udev" [ 13767.404] (II) event1 - Power Button: is tagged by udev as: Keyboard [ 13767.404] (II) event1 - Power Button: device is a keyboard [ 13767.404] (II) event1 - Power Button: device removed [ 13767.422] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1/event1" [ 13767.422] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 8) [ 13767.422] (**) Option "xkb_model" "pc105" [ 13767.422] (**) Option "xkb_layout" "de" [ 13767.422] (**) Option "xkb_options" "terminate:ctrl_alt_bksp" [ 13767.423] (II) event1 - Power Button: is tagged by udev as: Keyboard [ 13767.423] (II) event1 - Power Button: device is a keyboard [ 13767.424] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=7 (/dev/input/event11) [ 13767.424] (II) No input driver specified, ignoring this device. [ 13767.424] (II) This device may have been added with another device file. [ 13767.424] (II) config/udev: Adding input device HDA NVidia HDMI/DP,pcm=3 (/dev/input/event10) [ 13767.424] (II) No input driver specified, ignoring this device. [ 13767.424] (II) This device may have been added with another device file. ... mouse ... [ 13767.459] (II) No input driver specified, ignoring this device. [ 13767.459] (II) This device may have been added with another device file. [ 13767.460] (II) config/udev: Adding input device HD-Audio Generic Front Mic (/dev/input/event4) [ 13767.460] (II) No input driver specified, ignoring this device. [ 13767.460] (II) This device may have been added with another device file. [ 13767.460] (II) config/udev: Adding input device HD-Audio Generic Rear Mic (/dev/input/event5) [ 13767.460] (II) No input driver specified, ignoring this device. [ 13767.460] (II) This device may have been added with another device file. [ 13767.460] (II) config/udev: Adding input device HD-Audio Generic Line (/dev/input/event6) [ 13767.460] (II) No input driver specified, ignoring this device. [ 13767.460] (II) This device may have been added with another device file. [ 13767.460] (II) config/udev: Adding input device HD-Audio Generic Line Out (/dev/input/event7) [ 13767.460] (II) No input driver specified, ignoring this device. [ 13767.460] (II) This device may have been added with another device file. [ 13767.460] (II) config/udev: Adding input device HD-Audio Generic Front Headphone (/dev/input/event8) [ 13767.460] (II) No input driver specified, ignoring this device. [ 13767.460] (II) This device may have been added with another device file. [ 13767.461] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event0) [ 13767.461] (**) AT Translated Set 2 keyboard: Applying InputClass "libinput keyboard catchall" [ 13767.461] (**) AT Translated Set 2 keyboard: Applying InputClass "system-keyboard" [ 13767.461] (**) AT Translated Set 2 keyboard: Applying InputClass "Keyboard Defaults" [ 13767.461] (II) Using input driver 'libinput' for 'AT Translated Set 2 keyboard' [ 13767.461] (**) AT Translated Set 2 keyboard: always reports core events [ 13767.461] (**) Option "Device" "/dev/input/event0" [ 13767.461] (**) Option "_source" "server/udev" [ 13767.461] (II) event0 - AT Translated Set 2 keyboard: is tagged by udev as: Keyboard [ 13767.461] (II) event0 - AT Translated Set 2 keyboard: device is a keyboard [ 13767.461] (II) event0 - AT Translated Set 2 keyboard: device removed [ 13767.478] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input0/event0" [ 13767.478] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 10) [ 13767.478] (**) Option "xkb_model" "pc105" [ 13767.478] (**) Option "xkb_layout" "de" [ 13767.479] (**) Option "xkb_options" "terminate:ctrl_alt_bksp" [ 13767.480] (II) event0 - AT Translated Set 2 keyboard: is tagged by udev as: Keyboard [ 13767.480] (II) event0 - AT Translated Set 2 keyboard: device is a keyboard /home/sjngm/.xsession-errors: gpg-agent: WARNUNG: "--write-env-file" ist eine veraltete Option - sie hat keine Wirkung. gpg-agent: Ein gpg-agent läuft bereits - ein weiterer wird nicht gestartet (xfce4-session:25974): xfce4-session-WARNING **: 17:29:12.371: gpg-agent returned no PID in the variables (xfce4-session:25974): xfce4-session-WARNING **: 17:29:12.371: xfsm_manager_load_session: Something wrong with /home/sjngm/.cache/sessions/xfce4-session-runlikehell:0, Does it exist? Permissions issue? Warning: Unsupported high keycode 372 for name ignored X11 cannot support keycodes above 255. This warning only shows for the first high keycode. Warning: Unsupported high keycode 372 for name ignored X11 cannot support keycodes above 255. This warning only shows for the first high keycode. ** (xfce4-clipman:25994): WARNING **: 17:29:13.061: Unable to register GApplication: Für die Schnittstelle org.gtk.Application auf /org/xfce/clipman wurde bereits ein Objekt exportiert (xfce4-clipman:25994): GLib-GIO-CRITICAL **: 17:29:13.061: g_application_get_is_remote: assertion 'application->priv->is_registered' failed (xfce4-clipman:25994): GLib-WARNING **: 17:29:13.061: g_set_application_name() called multiple times (xfwm4:25984): xfwm4-WARNING **: 17:29:13.411: Error waiting on vblank with DRI: Das Argument ist ungültig (wrapper-2.0:26035): Gtk-WARNING **: 17:29:14.405: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner GtkToggleButton) (pamac-tray:26015): Gdk-CRITICAL **: 17:29:14.420: gdk_window_thaw_toplevel_updates: assertion 'window->update_and_descendants_freeze_count > 0' failed (wrapper-2.0:26072): Gtk-WARNING **: 17:29:14.420: gtk_widget_size_allocate(): attempt to allocate widget with width -3 and height 30 (xfce4-clipman:25994): Gdk-CRITICAL **: 17:29:14.441: gdk_window_thaw_toplevel_updates: assertion 'window->update_and_descendants_freeze_count > 0' failed (wrapper-2.0:26071): Gtk-WARNING **: 17:29:14.456: gtk_widget_size_allocate(): attempt to allocate widget with width -3 and height 30 (wrapper-2.0:26078): Gtk-WARNING **: 17:29:14.531: gtk_widget_size_allocate(): attempt to allocate widget with width -3 and height 30 (wrapper-2.0:26069): Gtk-WARNING **: 17:29:14.581: gtk_widget_size_allocate(): attempt to allocate widget with width -3 and height 30 (wrapper-2.0:26076): Gtk-WARNING **: 17:29:14.592: Negative content width -1 (allocation 1, extents 1x1) while allocating gadget (node button, owner GtkToggleButton) (wrapper-2.0:26076): Gtk-WARNING **: 17:29:14.592: gtk_widget_size_allocate(): attempt to allocate widget with width -2 and height 29 /etc/lightdm/lightdm.conf (only the uncommented lines): [LightDM] run-directory=/run/lightdm [Seat:*] session-wrapper=/etc/lightdm/Xsession [XDMCPServer] [VNCServer] /etc/lightdm/lightdm-gtk-greeter.conf: [greeter] background = /usr/share/backgrounds/maia.png theme-name = Vertex-Maia icon-theme-name = Vertex-Maia font-name = Cantarell 10 xft-antialias = true xft-hintstyle = hintfull show-clock = false position = 50%,center 50%,center screensaver-timeout = 60 hide-user-image = true /var/log/lightdm/lightdm.log: [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log [+0.00s] DEBUG: Starting Light Display Manager 1.26.0, UID=0 PID=25883 [+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf [+0.00s] DEBUG: Registered seat module local [+0.00s] DEBUG: Registered seat module xremote [+0.00s] DEBUG: Registered seat module unity [+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager [+0.00s] DEBUG: Monitoring logind for seats [+0.00s] DEBUG: New seat added from logind: seat0 [+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:* [+0.00s] DEBUG: Seat seat0: Starting [+0.00s] DEBUG: Seat seat0: Creating greeter session [+0.00s] DEBUG: Seat seat0: Creating display server of type x [+0.01s] DEBUG: Using VT 7 [+0.01s] DEBUG: Seat seat0: Starting local X display on VT 7 [+0.01s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log [+0.01s] DEBUG: XServer 0: Writing X server authority to /run/lightdm/root/:0 [+0.01s] DEBUG: XServer 0: Launching X Server [+0.01s] DEBUG: Launching process 25889: /usr/bin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch [+0.01s] DEBUG: XServer 0: Waiting for ready signal from X server :0 [+0.01s] DEBUG: Acquired bus name org.freedesktop.DisplayManager [+0.01s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0 [+0.01s] DEBUG: Loading users from org.freedesktop.Accounts [+0.01s] DEBUG: User /org/freedesktop/Accounts/User1000 added [+0.07s] DEBUG: Seat seat0 changes active session to c15 [+0.60s] DEBUG: Got signal 10 from process 25889 [+0.60s] DEBUG: XServer 0: Got signal from X server :0 [+0.60s] DEBUG: XServer 0: Connecting to XServer :0 [+0.61s] DEBUG: Seat seat0: Display server ready, starting session authentication [+0.61s] DEBUG: Session pid=25902: Started with service 'lightdm-greeter', username 'lightdm' [+0.63s] DEBUG: Session pid=25902: Authentication complete with return value 0: Success [+0.63s] DEBUG: Seat seat0: Session authenticated, running command [+0.63s] DEBUG: Session pid=25902: Running command /usr/bin/lightdm-gtk-greeter [+0.63s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm [+0.63s] DEBUG: Session pid=25902: Logging to /var/log/lightdm/seat0-greeter.log [+0.70s] DEBUG: Activating VT 7 [+0.70s] DEBUG: Activating login1 session c47 [+0.71s] DEBUG: Seat seat0 changes active session to c47 [+0.71s] DEBUG: Session c47 is already active [+0.89s] DEBUG: Greeter connected version=1.26.0 api=1 resettable=false [+1.09s] DEBUG: Greeter start authentication for sjngm [+1.09s] DEBUG: Session pid=25945: Started with service 'lightdm', username 'sjngm' [+1.09s] DEBUG: Session pid=25945: Got 1 message(s) from PAM [+1.09s] DEBUG: Prompt greeter with 1 message(s) I'm probably missing that one file that you need, so please let me know what you need (and also what not as I'm limited to 30k text here...).

The system boots up normally, and I log in. I open an xterm and this happens: $ groups rphelps $ su rphelps Password: $ groups rphelps adm cdrom sudo dip www-data plugdev lpadmin sambashare kismet docker If I log in via SSH, my groups are set correctly. If I log into a tty instead of X, my groups are set correctly. When I try to log out of the X session or hit Ctrl+Alt+L, it closes the session, but then it seems like the greeter can't be (re)started, or the lockscreen doesn't work, and *it brings me back to my desktop*. I was recently mucking around with screen savers (xscreensaver, gnome-screensaver, etc.) trying to get the screen to lock after 30 minutes (no luck). Did purging those have remove something vital for logging out? I haven't modified any /etc/ files manually. Xubuntu 18.04 Edit 1: $ journalctl -u lightdm.service -- Reboot -- Jul 25 11:21:01 rphelps-DELL systemd: Starting Light Display Manager... Jul 25 11:21:01 rphelps-DELL lightdm: Seat type 'xlocal' is deprecated, use 'type=local' instead Jul 25 11:21:01 rphelps-DELL systemd: Started Light Display Manager. Jul 25 11:21:02 rphelps-DELL lightdm: pam_kwallet(lightdm-greeter:setcred): (null): pam_sm_setcred Jul 25 11:21:02 rphelps-DELL lightdm: pam_kwallet5(lightdm-greeter:setcred): (null): pam_sm_setcred Jul 25 11:21:02 rphelps-DELL lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0) Jul 25 11:21:03 rphelps-DELL lightdm: pam_kwallet(lightdm-greeter:session): (null): pam_sm_open_session Jul 25 11:21:03 rphelps-DELL lightdm: pam_kwallet(lightdm-greeter:session): pam_kwallet: open_session called without kwallet_key Jul 25 11:21:03 rphelps-DELL lightdm: pam_kwallet5(lightdm-greeter:session): (null): pam_sm_open_session Jul 25 11:21:03 rphelps-DELL lightdm: pam_kwallet5(lightdm-greeter:session): pam_kwallet5: open_session called without kwallet5_key Jul 25 11:21:03 rphelps-DELL lightdm: pam_succeed_if(lightdm:auth): incomplete condition detected Jul 25 11:22:37 rphelps-DELL lightdm: pam_kwallet(lightdm:auth): (null): pam_sm_authenticate Jul 25 11:22:37 rphelps-DELL lightdm: pam_kwallet5(lightdm:auth): (null): pam_sm_authenticate Jul 25 11:22:37 rphelps-DELL lightdm: pam_kwallet(lightdm:setcred): pam_kwallet: pam_sm_setcred Jul 25 11:22:37 rphelps-DELL lightdm: pam_kwallet5(lightdm:setcred): pam_kwallet5: pam_sm_setcred Jul 25 11:22:37 rphelps-DELL lightdm: pam_unix(lightdm:session): session opened for user rphelps by (uid=0) Jul 25 11:22:37 rphelps-DELL lightdm: pam_kwallet(lightdm:session): pam_kwallet: pam_sm_open_session Jul 25 11:22:37 rphelps-DELL lightdm: Error writing to daemon: Bad file descriptor Jul 25 11:22:37 rphelps-DELL lightdm: Failed to write utmpx: Permission denied Jul 25 11:34:02 rphelps-DELL lightdm: Failed to write utmpx: Permission denied Jul 25 11:34:02 rphelps-DELL lightdm: Error writing to daemon: Bad file descriptor Jul 25 11:34:02 rphelps-DELL lightdm: Failed to write utmpx: Permission denied Jul 25 11:40:38 rphelps-DELL lightdm: Failed to write utmpx: Permission denied Jul 25 11:40:38 rphelps-DELL lightdm: Error writing to daemon: Bad file descriptor Jul 25 11:40:38 rphelps-DELL lightdm: Failed to write utmpx: Permission denied Jul 25 11:50:05 rphelps-DELL lightdm: Failed to write utmpx: Permission denied Jul 25 11:50:05 rphelps-DELL systemd: Stopping Light Display Manager... Jul 25 11:50:05 rphelps-DELL lightdm: Error updating user /org/freedesktop/Accounts/User1000: GDBus.Error:org.freedesktop.systemd1.ShuttingDown: Refusing Jul 25 11:50:05 rphelps-DELL lightdm: seat_lock: assertion 'seat != NULL' failed Jul 25 11:50:05 rphelps-DELL lightdm: Error updating user /org/freedesktop/Accounts/User1000: GDBus.Error:org.freedesktop.systemd1.ShuttingDown: Refusing Jul 25 11:50:05 rphelps-DELL lightdm: Error updating user /org/freedesktop/Accounts/User1000: GDBus.Error:org.freedesktop.systemd1.ShuttingDown: Refusing Jul 25 11:50:07 rphelps-DELL systemd: Stopped Light Display Manager.