I have the *Mirror Displays* enabled on my Linux Mint 15 Cinnamon 64-bit box, which has a GTX 680 graphics card installed with recommended drivers. I selected [the top green one in this screenshot](http://linuxmint.com/pictures/screenshots/olivia/mintdrivers.png) . However, when on the login screen, the display is not mirrored; it's displayed on the primary monitor only. I really would like to have the WebGL clouds (the flyover one) MDM login screen projected on a 108″ screen before login. Is there any way I could do this? --- **Edits for updates:** I notice that the *Mirror Displays* setting is account-specific. Is there a "default" user at the login screen whose settings I could tweak to enable this? I've tried sudo su -l mdm in an attempt to cinnamon-settings the display to mirrored, but sudo su -l mdm has no effect (very strangely): I retain my shell prompt, and a single exit kills the terminal.

I am using Arch Linux mate and I accidentally made my DPI settings really really large and now I can't change them back to a smaller setting because it's so large that it's not visible on my screen to fix it. Is there a way to correct DPI settings in the Command Line or any other solution...

I recently upgraded one of my machines from Fedora 28 (I think) to FC32 with XFCE4. After the update, my screen resolution is degraded to 640 x 480. Many items do not work at such a low resolution, because buttons falls outside the screen. When I tried to change the Display Settings, the only selection for the resolution is 640x480. There is no xorg.conf file that I can edit. There is no "system-config-display" that I can use to generate one. When I try to generate it by typing "Xorg -configure" I am told tht I must stop the X server first, but when I kill it, it respawns. How do I resolve this? This works on my other Fedora systems ... just not this one.

I would like to set up vertical panning on my laptop screen (eDP-1, native resolution 1920x1080), while using a secondary screen (HDMI-1) in its native resolution. Following [this answer](https://unix.stackexchange.com/a/217715/140232) , I have tried doing this with the following command: xrandr --output eDP-1 --panning 1920x1180 --output HDMI-1 --auto --right-of eDP-1 This gives almost the expected result, except that the vertical panning area is flickering and duplicating seemingly random parts of laptop screen rather than extending it. Without the second screen, the command xrandr --output eDP-1 --panning 1920x1180 gives exactly the expected vertical panning behaviour. What I am doing wrong? [I'm running Ubuntu 20.04 with the default desktop/window manager etc.]

I'm trying to use a Dell UP2414Q screen on Linux. This is a 24" 4K display. Because it's an early use of 4K technology, the screen uses multi stream transport (MST) over the Displayport cable, and internally represents the monitor as two separate 1920x2160 screens lined up horizontally. In 2014, this appears to have been the best way to achieve the required bandwidth to drive a 4K resolution. On the distro I'm using (Univeral Blue Aurora / KDE), the screen is unfortunately detected as two separate displays. This means that each horizontal half of the screen is used as its own display, and I can't extend apps or the Plasma taskbar over the two screens. Is there a way to use this screen to its full potential on a Linux desktop using Wayland? I've heard various measures of success using an X11 feature like Xinerama, but it seems clunky and I'd prefer using a Wayland desktop anyway.

I recently purchased a YXK 15.6” portable display on Amazon. It has a usb-c to usb-c cable connection and also a hdmi to a smaller hdmi cable connection option. When I connect it via usb-c to my MSI bravo laptop running windows I can use it as a second display. When I run xubuntu via virtual box I cannot get the ubuntu OS to acknowledge the 2nd monitor. I can grab the virtual machine and drag it to either monitor but cannot use both monitors together from within xubuntu. I tried going to settings->display and I’ve turned on the options to configure new displays when connected but the second display doe not appear as an option. Does anyone know how to get this monitor working so I can extend my xubuntu desktop to the second screen?

I followed the instructions in this post to disable my Steam Deck's display when in Desktop Mode which is basically the following: > by going into settings > display configuration > device (laptop screen) > unchecked enabled & primary But now my issue is: How do I re-enable it again? The display doesn't show up in the display configuration settings anymore. I see other people in that same post from above are also having the same issues where they don't know how to re-enable the display after disabling it. --- This is what I see in my display settings: I only see my two external displays. My Steam Deck's internal display isn't here anymore after I've disabled it. So I don't know where to find and enable it again. --- How can I turn my Steam Deck's display on again when in desktop mode?

I have Wayland running which also uses Mutter. I have been searching for quite a while and can't find anyway to lock this in. The reason I need this done is when I shut my laptop, or other random times, changes the configured refresh rate for my external monitor, which is a pain, and required manual intervention each time. If anyone has any luck with this please let me know. TLDR, I need to force a refresh rate in linux (fedora 41/gnome), I can see the bios/firmware screens fine.

From Xfce Docs : > In case you want to override the DPI (dots per inch) value *calculated > by the X-server*, you can select the checkbox and use the spin box to > specify the resolution to use when your screen renders fonts. But *how* does X-server do its calculation? What assumptions are made in the process and can some of the parameters be overridden? It may know how many pixels I have on my display, but is that enough?

At work my laptop is set to the right of my external monitor. Not because I like to but because no other configuration is possible. When I need to extend my desktop I always have to select «*Extend to the right*» (to enable the external monitor with auto-detected resolution) then switch to «*Advanced*» and manually move the icon of the laptop display to the right of that of the external monitor and press «*Apply*». It gets boring when you have to do that on a daily basis. Besides — and I don't know why — the «*Mirror Displays*» button is disabled. The display selection window shows itself right after I plug in the HDMI cable, which is great. If the desktop was extended before I unplug the HDMI cable, it snaps back to the laptop panel immediately afterwards and that's great too. Therefore I need none of the «*External monitor*» and «*Laptop*» buttons. All in all, out of 4 buttons on that panel only one is half useful, the other ones not at all. So aren't there any... plans to add an «*Extend to the left*» button in xfce4-display-settings? Why arbitrary limit extension to right sides? Are left sides... evil?

The current setup of my displays is as follows: I would like the 2nd Sony display to be a mirror of 3rd Dell display, while the 1st Samsung display should remain as separate secondary display. When I try to change 2nd Sony display into Mirror mode, the button Apply is grayed out: Is there a way to make it the way I want it to be?

I want to run old computers without GUI. If I use the command xrandr -x in a Linux system (with GUI), the whole screen is reflected (mirrored) around the Y-axis (*along* the X-axis).  So text is mirror-text, like: pod       changes to                          boq and LED/6       changes to (something like)                     ∂ \\⫏∃⌋ (but by actually reflecting the characters, not substituting similar-looking ones). Even the layout is reflected like a mirror would be on the right or left side of the display, and you would watch into the mirror.  I use my computer this way, so also reading not from left to right.  I read text inverted from right to left.  The letters are each themselves mirrored. Without graphical user interface, I can't use xrandr -x.  So I am searching for a command that inverts the whole screen to x-axis timeless in the tty, so I can read text and use commands mirrored.  Text always starts from the right side of the screen.  It is like Arabic is written, but with Latin/Roman letters and other characters normally displayable in the console/terminal.

I know that two AMD graphics cards/two NVIDIA graphics cards can work together ,e.g. in xinerama/crossfire/multi-view. But if I have one AMD graphics card and one NVIDIA graphics card, can I use them together on one platfrom simultaneously? How can I configure it? PS. I am asking about the closed source drivers. Not the open source drivers. Did anybody try and success?

when I connect my external monitor everything looks so big, the code font in my editor inside my laptop has a small and pretty font but when I move to the external monitor is like a zoom instead of increase the desktop space I was doubtful if it should be like that because the monitor is new but I test it with a macbook and it works really well, the monitor keeps the dimensions of the elements..it doesn't seem like it's zooming which it does on linux I'm using manjaro KDE, my laptop monitor and the monitor has the same resolution (1920x1080) is possible fix this? please let me know if you need more information thank you so much

I recently just created a virtual machine in VMware Player with the OS. Debian 12 and the MATE desktop environment (with X11 window manager). The problem I have is regarding the resolution and scaling of the screen. The default configuration is the following: Resolution: 1920x935 Scale: 100% The problem is that with that resolution and scaling the windows and text look too small and it is quite difficult to read. If I change to a scale of 200% the text and windows become too large, and it is a bit uncomfortable to work that way. The problem is that with that resolution and scaling the windows and text look too small and it is quite difficult to read. If I change to a scale of 200% the text and the windows become too large, and the windows are not shown in their entirety and I cannot interact with the buttons at the bottom of the windows, this in "normal" mode. In "Full Screen" mode I can see the buttons at the bottom of the windows, however the size is still too big, and it is a bit complicated to work that way. Using xrandr I have tried changing the scald value to 1.5, which displays elements of a suitable size. But now I have the problem that I don't know how I can make the changes persist either by resizing the window, or by exiting and entering full screen mode and restarting the machine since the configuration is lost when doing one of the previous actions. xrandr --output Virtual1 --mode 1920x1080 --scale 1.5x1.5 How can I make the settings persistent?

I have a number of files with very long names. Please, is there a way to use ls -C and truncate the file names to get more columns for an overall view? Or is there a better way to get a compact listing?

I've come over to Debian from Ubuntu - great! I'm using xfce4 as the desktop environment. One issue is my chosen screen resolution reverts to a default - both randomly while I'm on the PC (just happened now while typing this!), and it also reverts after the PC returns from suspend. I choose 1920x1080 in Settings->Display, but the system reverts to 3840x2160. However, the system saves the 1920x1080 config when I reboot or stop/start. I'm guessing there may be a setting in a file I can tweak?

Are there any commands out there that will tell me something like:

Current display mode: 3840x2160, 120Hz, 10-bit, YCbCr422 (DSC unsupported)
Available display modes:
* 3840x2160, 120Hz, 8-bit, RGB444
* 3840x2160, 120Hz, 8-bit, YCbCr444
* 3840x2160, 60Hz, 10-bit, RGB444
* etc.

Everything I've seen so far is missing information on bitrate, chroma subsampling, and DSC status.

I am just setting up a media center based on Linux Mint 21.2 Cinnamon and have created a user with restricted rights. As the system is to be controlled during operation, it should not go into sleep mode. I have changed the energy settings accordingly. But after a while, the lock screen still appears. I then found this solution on the Internet:

sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

But I was not successful with this either. Can anyone tell me how I can deactivate the switch to the lock screen? I'd appreciate any help. Harry

This is my question: how to configure the Fluxbox slit side panel (taskbar which contains dockable apps) for avoiding to auto-hide?