I'm trying to increase the brightness of my screen in order to see well what I'm doing (because the set brightness is so low thay I can't see anything if I have some light behind me). Before asking here I have investigated and found some possible ways that didn't work for me: I tried to increase the backlight of my laptop (since it's too dark) by using brightnessctl (which teorically worked but didn't actually change anything, since the brightness didn't change) or xbacklight (which didn't work because, as I have understood, it's for intel GPUs), so I tried to change it manually in /sys/class/backlight/[device]. I could find a device called **radeon_bl0** inside the mentioned path, and some subdirectories inside radeon_bl0 such as: actual_brightness, bl_power (set to 0), brightness, device, max_brightness (255), power, scale, subsystem, type and uevent. Seeing that, I tried to do it with echo 200 > /sys/class/backlight/radeon_bl0/brightness. Actually, it changed the number inside the file (the cat command showed the new value), but the actual (physical) backlight was the same. I don't know why does this happen, but I think it could be related to brightnessctl not working. Thanks for reading this, I hope someone can help me :) PD: My GPU is an AMD ATI Mobility Radeon 9550 EDIT: The laptop is a Packard Bell Easynote PB26M00704

I know that this question is posted a few times already, but I tried many of the solutions there and they didn't work. If I start my Laptop (restart or fresh boot after being turned off) the WiFi works most of the time and I can connect to it without a problem. *Not always though* If I'm connected and close the lid or press the power button so that the laptop goes into suspend mode, after I open it up again, I can't connect to the internet. The available networks are shown, but all of them only have a 10% strength and nothing happens when I try to connect to them. If I deactivate and activate WiFi again (either by the switch in network-manager or by the F-Key on the keyboard), it shows WiFi as "not connected". I tried to restart network-manager after the suspension, but that didn't fix the problem. I know that this is not a lot of debugging information, but I'm not knowledgeable enough of Linux to be able to give you a more relevant one. But I'm happy to provide it, if you tell me what exactly. EDIT: After thinking about the problem a little bit more I also remembered the following: If I let the Laptop suspend by going idle and waiting for the 5 minutes it requires, I sometimes have WiFi after booting up again. It also happened recently, that I was playing in offline mode (because I had no WiFi) and after quite some time I could connect to the Internet again (I think about an hour, but I'm not exactly sure). I have seen this phenomenon very rarely and it only happened on a few occasions.

When I boot up my system (I'm using Ubuntu 20.04), the keyboard isn't detected. The only way to have it working is to suspend the system and wake it up back. Then the keyboard is fully functioning. I tried using different acpi_osi kernel parameters without success. The same happens with differents Live USB. The keyboard works in BIOS though. My laptop model is Clevo PB71DF2-G and I fresh installed Ubuntu on it. Everything else works as expected. Does anyone have a solution ?

I have a Lenovo Ideapad 320-15ABR, (I found the exact model name with dmidecode). I'm having trouble getting the touchpad to work. It's not showing up in xinput --list or cat /proc/bus/input/devices. I'm using Linux 4.13.2, compiled with some extra debugging messages. Here's some relevant dmesg output when booted with i8042.nopnp. Without this option, I get the message: i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp $ dmesg|grep psm [ 2.595815] bus: 'serio': add driver psmouse [ 2.627475] bus: 'serio': driver_probe_device: matched device serio1 with driver psmouse [ 2.627477] bus: 'serio': really_probe: probing driver psmouse with device serio1 [ 2.627482] psmouse serio1: no default pinctrl state [ 2.651584] psmouse: probe of serio1 rejects match -19 $ dmesg|grep i8042 [ 2.577522] i8042: PNP detection disabled [ 2.578648] Registering platform device 'i8042'. Parent at platform [ 2.578650] device: 'i8042': device_add [ 2.578655] bus: 'platform': add device i8042 [ 2.578668] PM: Adding info for platform:i8042 [ 2.578682] bus: 'platform': add driver i8042 [ 2.578692] bus: 'platform': driver_probe_device: matched device i8042 with driver i8042 [ 2.578694] bus: 'platform': really_probe: probing driver i8042 with device i8042 [ 2.578699] i8042 i8042: no default pinctrl state [ 2.578702] devices_kset: Moving i8042 to end of list [ 2.595059] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 2.595070] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 2.595125] driver: 'i8042': driver_bound: bound to device 'i8042' [ 2.595150] bus: 'platform': really_probe: bound device i8042 to driver i8042 [ 2.604184] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0 **edit:** I've opened a ticket here in case anyone is interested in following this problem: https://bugzilla.kernel.org/show_bug.cgi?id=196985

My Arch (3.6.5-1) is exhibiting a rather peculiar problem: when wifi is set up, all logs indicate that the setup was successful and that the interface is up and functional. However, when attempting to access a website (or execute ping) all requests time out (despite that connection is reported as working and signal at 63% strength). This tends to happen randomly after laptop is switched on - after some time the connection usually starts working and does not break until next shutdown/suspend. Relevant dmesg entries (full dmesg output can be found [here](http://pastebin.com/PH7jb8fy)) : [ 13.858528] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 14.024275] r8169 0000:02:00.0: eth0: link down [ 14.024339] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 34.895920] wlan0: authenticate with 00:24:6c:c8:e4:a1 [ 34.900827] wlan0: send auth to 00:24:6c:c8:e4:a1 (try 1/3) [ 34.902963] wlan0: authenticated [ 34.908362] wlan0: associate with 00:24:6c:c8:e4:a1 (try 1/3) [ 34.911153] wlan0: RX AssocResp from 00:24:6c:c8:e4:a1 (capab=0x1431 status=0 aid=9) [ 34.911217] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.911294] wlan0: associated ip -s link shows: wlan0: mtu 1500 qdisc mq state UP mode DORMANT qlen 1000 link/ether 50:b7:c3:1e:f4:21 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 14970982 50472 0 0 0 0 TX: bytes packets errors dropped carrier collsns 19116 233 0 0 0 0 ip minotor outputs some failure messages: [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [LINK]3: wlan0: link/ether [LINK]3: wlan0: mtu 1500 qdisc mq state DOWN link/ether 50:b7:c3:1e:f4:21 brd ff:ff:ff:ff:ff:ff [LINK]3: wlan0: mtu 1500 qdisc mq state DORMANT link/ether 50:b7:c3:1e:f4:21 brd ff:ff:ff:ff:ff:ff [LINK]3: wlan0: link/ether [LINK]3: wlan0: link/ether [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [LINK]3: wlan0: mtu 1500 qdisc mq state UP link/ether 50:b7:c3:1e:f4:21 brd ff:ff:ff:ff:ff:ff [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]ff02::2 dev wlan0 lladdr 33:33:00:00:00:02 NOARP [NEIGH]ff02::1:ff1e:f421 dev wlan0 lladdr 33:33:ff:1e:f4:21 NOARP [NEIGH]ff02::16 dev wlan0 lladdr 33:33:00:00:00:16 NOARP [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.79.218 dev lo lladdr 00:00:00:00:00:00 NOARP [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [LINK]3: wlan0: link/ether [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED [NEIGH]144.32.78.1 dev wlan0 FAILED All that should be loaded seem to be ([output of lsmod](http://pastebin.com/zJm1NiX9)) . Any idea on how to solve this or what the problem is?

I’ve installed antiX 19.3 recently on a 16-yro (or older), laptop. One issue I’ve been having is that the thing keeps going to sleep! Every 30-45 seconds or so, it goes into sleep mode; and comes back up on a keypress. This includes even the boot sequence: While running the init scripts for runlevel 5, this already happens once. It continues after my desktop environment (IceWM) has loaded. I've read this highly related question , and found a workaround: Completely disable ACPI and APM on the grub2 boot line for the kernel: acpi=off apm=off. But that’s not a good solution, because it is important for the laptop to go to sleep when unused; and you want fan speed control etc. Another suggestion there involve systemd facilities - but my distribution doesn't use systemd. What else can I do? Also, what could be the cause of this? Here's the repeating segment of my dmesg:

[Wed May 12 17:11:00 2021] VFS: busy inodes on changed media or resized disk sr0
[Wed May 12 17:11:26 2021] PM: suspend entry (deep)
[Wed May 12 17:11:26 2021] PM: Syncing filesystems ... done.
[Wed May 12 17:11:26 2021] Freezing user space processes ... (elapsed 0.001 seconds) done.
[Wed May 12 17:11:26 2021] OOM killer disabled.
[Wed May 12 17:11:26 2021] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[Wed May 12 17:11:26 2021] Suspending console(s) (use no_console_suspend to debug)
[Wed May 12 17:11:26 2021] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[Wed May 12 17:11:26 2021] sd 0:0:0:0: [sda] Stopping disk
[Wed May 12 17:11:28 2021] ACPI: EC: interrupt blocked
[Wed May 12 17:11:28 2021] ACPI: Preparing to enter system sleep state S3
[Wed May 12 17:11:28 2021] ACPI: EC: event blocked
[Wed May 12 17:11:28 2021] ACPI: EC: EC stopped
[Wed May 12 17:11:28 2021] PM: Saving platform NVS memory
[Wed May 12 17:11:28 2021] Disabling non-boot CPUs ...
[Wed May 12 17:11:28 2021] ACPI: Low-level resume complete
[Wed May 12 17:11:28 2021] ACPI: EC: EC started
[Wed May 12 17:11:28 2021] PM: Restoring platform NVS memory
[Wed May 12 17:11:28 2021] ACPI: Waking up from system sleep state S3
[Wed May 12 17:11:28 2021] ACPI: EC: interrupt unblocked
[Wed May 12 17:11:28 2021] usb usb2: root hub lost power or was reset
[Wed May 12 17:11:28 2021] usb usb3: root hub lost power or was reset
[Wed May 12 17:11:28 2021] usb usb4: root hub lost power or was reset
[Wed May 12 17:11:28 2021] 8139too 0000:01:00.0 eth0: link up, 100Mbps, full-duplex, lpa 0xC5E1
[Wed May 12 17:11:28 2021] sd 0:0:0:0: [sda] Starting disk
[Wed May 12 17:11:28 2021] ACPI: EC: event unblocked
[Wed May 12 17:11:28 2021] ata1.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[Wed May 12 17:11:28 2021] ata1.00: ACPI cmd ef/03:45:00:00:00:a0 (SET FEATURES) filtered out
[Wed May 12 17:11:28 2021] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[Wed May 12 17:11:28 2021] ata2.00: ACPI cmd ef/03:42:00:00:00:a0 (SET FEATURES) filtered out
[Wed May 12 17:11:29 2021] usb 3-2: reset full-speed USB device number 2 using uhci_hcd
[Wed May 12 17:11:29 2021] firewire_core 0000:01:02.0: rediscovered device fw0
[Wed May 12 17:11:30 2021] OOM killer enabled.
[Wed May 12 17:11:30 2021] Restarting tasks ... done.
[Wed May 12 17:11:30 2021] PM: suspend exit
[Wed May 12 17:11:35 2021] VFS: busy inodes on changed media or resized disk sr0
[Wed May 12 17:12:01 2021] PM: suspend entry (deep)

Notes: * I should mention that this did not happen with the Windows XP installation which the laptop used to have. * The laptop’s battery is almost dead, so I only run it with mains power plugged in. * I tried switching the kernel version from 4.9.something to 4.19.something (antix-packaged images); no effect. * Laptop info: Clevo M3CW, Pentium M 1.6GHz, 1 GB memory, 40GB HDD. Has a built-in CD which is giving me another kind of trouble that's probably unrelated.

Hi i'm trying to set up an old laptop as a 'server' for testing purposes. As such, I don't want the screen on all day, however i do want the cpu running 24x7. Can the 'lid close' switch be configured somehow to simply turn off the screen but otherwise the laptop is running as normal? FYI: I'm running coreos, but i'm willing to switch to another docker container OS if it makes life easier.

I recently installed Ubuntu 18.04 in a Dell inspiron 7559. I had a lot of trouble with the installation of almost any distro but this time it seemed that everything worked just fine. The first couple of times that I closed the lid and re-opened it, everything seemed to work fine, but now it doesn't. Namely, after it resumes, opening apps by clicking them is not a posibility any more. Do you have any ideas of how I can fix this bug? Note that the laptop bares a NVIDIA card and I have installed the proprietary drivers. lspci output

00:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 07)
00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 07)
00:01.1 PCI bridge: Intel Corporation Skylake PCIe Controller (x8) (rev 07)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 07)
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31)
00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] (rev 31)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #6 (rev f1)
00:1c.6 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #7 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
02:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
05:00.0 Network controller: Intel Corporation Wireless 3165 (rev 79)
06:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)

Note that sometimes it freezes, sometimes it does not...which I find it even more weird..

I'm using a Lenovo Yoga 7 14ARP8. Currently on NixOS, but this issue seems to happen on other distros including Fedora. ## The issue This laptop has a 360 degree hinge that allows it to become a tablet of sorts. When flipped above 180 degrees on Windows the keyboard and touchpad are disabled (And the backlight turns off). While completly flipping the keyboard around 360 degrees has a similar effect (without turning off backlight) and triggers the "Tablet mode" on KDE Plasma, the keyboard and touchpad continue to be enabled anywhere between 180 and 360 degrees, meaning if I set the keyboard to be facing the ground as a stand, random keys may be pressed. ## Debugging the events The first thing I tried was running a sudo libinput debug-events and flipping the keyboard while it's running. The result is this: As I flip it to 360:\ `-event12 SWITCH_TOGGLE +4294967.295s switch tablet-mode state 1` As I flip it away from 360:\ ` event12 SWITCH_TOGGLE +2.300s switch tablet-mode state 0` Going beyond 180 does not affect the "tablet-mode" state. ## The responsible modules It seems this switch is controlled by the lenovo_ymc module, but there's also a ymc_ec_trigger option in the ideapad_laptop module, however enabling that didn't fix the issue. ideapad_laptop seems to have fixes for the previous gen of this laptop (Yoga 7 14ARP7) but not this one. Within the lenovo_ymc module there is this code:

c
static const struct key_entry lenovo_ymc_keymap[] = {
	/* Laptop */
	{ KE_SW, 0x01, { .sw = { SW_TABLET_MODE, 0 } } },
	/* Tablet */
	{ KE_SW, 0x02, { .sw = { SW_TABLET_MODE, 1 } } },
	/* Drawing Board */
	{ KE_SW, 0x03, { .sw = { SW_TABLET_MODE, 1 } } },
	/* Tent */
	{ KE_SW, 0x04, { .sw = { SW_TABLET_MODE, 1 } } },
	{ KE_END },
};

I'm not sure how it determines when the laptop is in "Tablet" mode, but should be sending the event even in "Tent" mode or "Drawing Board" mode. It seems though those aren't getting triggered or are skipped. I am thinking of reporting this as a bug to the linux kernel, but I wanted to post it here in case anyone can help.

Recently I began to use my laptop (Dell Inspiron N5020) with an external display. I use the displays side-by-side, internal on the left, external on the right. The problem is, however, that the display on the external monitor seems to be shifted to the right by a few pixels, and at the same time a few pixel wide column from the right edge of the internal display is duplicated on the left edge of the external. On a screenshot this is not visible. I illustrated what I'm actually talking about on this image:  The type of the external monitor doesn't seem to matter. Same thing with a Medion 1680x1050 monitor with VGA connector, and a Dell U2311H through HDMI. Also I tried to set various resolution combinations, and it seems to only happen when the internal monitor is at its native resolution (which is 1366x768) (I have Linux Mint 15 x64 with Cinnamon.)

I am running Linux Mint 17.2 64bit on a Acer Aspire-VN7-791G. Bluetooth seems to be working - at least I can turn it on - but when scanning for other devices nothing is found. lspci returns the following user@user-Aspire-VN7-791G ~ $ lspci -nnk | grep -iA2 net 07:00.0 Network controller : Qualcomm Atheros Device [168c:003e] (rev 20) Subsystem: Lite-On Communications Inc Device [11ad:0804] Kernel driver in use: ath10k_pci 08:00.0 Ethernet controller : Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe [14e4:1692] (rev 01) Subsystem: Acer Incorporated [ALI] Device [1025:091d] Kernel driver in use: tg3 lsusb output user@user-Aspire-VN7-791G ~ $ lsusb Bus 004 Device 002: ID 8087:8000 Intel Corp. Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 002: ID 8087:8008 Intel Corp. Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 04f2:b469 Chicony Electronics Co., Ltd Bus 001 Device 004: ID 06cb:2970 Synaptics, Inc. Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 001 Device 006: ID 04ca:3011 Lite-On Technology Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Also my kernel version is 4.2.0-18-generic because I upgraded it in order to get the WiFi working.

Whenever the computer goes to sleep or is otherwise suspended, the WiFi connection is lost, no networks are found. Running Ubuntu 20.04 on a new Huawei Matebook D 15, problem has been happening since Ubuntu installed. When I run sudo wlp1s0 up, as other questions recommend, it says something along the lines of Operation already in progress, and no combination of wlp1s0 down etc changes it. The clearest output describing the problem is that running lspci -v after suspend includes

01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822CE 802.11ac PCIe Wireless Network Adapter (rev ff) (prog-if ff)
	!!! Unknown header type 7f
	Kernel driver in use: rtw_8822ce
	Kernel modules: rtw88_8822ce

and

00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge (rev ff) (prog-if ff)
	!!! Unknown header type 7f
	Kernel driver in use: pcieport

Does anyone know what might be happening?

The sound configuration has spontaneously stopped working on my Linux laptop. I do not know the cause, or how to fix it. ### Symptoms: In the PulseAudio control panel, I can set Built-in Audio to - Analog Stereo Input - Pro Audio - Various Digital Surround... options that all say "(unavailable) (unplgged)" - Off If I use Analog Stereo Input, my laptop microphone works but my laptop cannot play sound. If I use Pro Audio, my laptop can play sound (seemingly at a lower volume than it used to be capable of), but my microphone does not work. I am not sure when this issue appeared, but it most likely entered with a routine apt-get update some time in May of 2025. To my recollection, I have not manually installed any new packages during this time, but it is possible that an unrelated package update has changed the audio configuration. Prior to this, the Built-in Audio device could play audio through the laptop speakers and record audio through the laptop microphone at the same time. This worked out of the box with, for example, video calls, from the day I installed Debian up until a few weeks ago. I did not need to manually adjust any settings for video calls to work. ### System: - Debian (12.11) Linux - Lenovo P51 laptop - Kernel version 6.1.0-34-amd64 - All standard update applied via apt as of 01 June 2025. - Single boot device, no other operating systems. - The system appears to be using PulseAudio, and I have not manually altered the audio configuration since the original (stock) installation of Debian 12 approximately 6 months ago. I have never been very skilled in understanding, diagnosing, debugging, or fixing audio issues in my 20 years of using Linux, so I thank you for your patience and advice in advance. I am not sure what steps to take next to try to fix this.

The only way I can wake up my laptop (HP Elitebook 8460p) from suspend is by pressing the power button. Neither the built-in keyboard/mouse nor the external ones (connected via USB) wake the laptop up. Things I already tried: * Enabling the USB devices in /proc/acpi/wakeup. * Checking the bootlog to find out the /dev paths of the USB mouse/keyboard, then: udevadm info -a -p $(udevadm info -q path -n /dev/input/mouse2) I then checked for every device in the list using: cat /sys/devices/.../power/wakeup if it is possible to enable it, and if so, I do that. * I have enabled wake on USB in the BIOS. Here some outputs you might need: **$ uname -a** Linux oliarch 2.6.38-ARCH #1 SMP PREEMPT Tue May 10 08:05:04 CEST 2011 x86_64 Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz GenuineIntel GNU/Linux **\# lsusb** Bus 001 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 003 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 003 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 003 Device 004: ID 04f2:b230 Chicony Electronics Co., Ltd Bus 003 Device 005: ID 03f0:231d Hewlett-Packard **\# lspci** 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family MEI Controller #1 (rev 04) 00:16.3 Serial controller: Intel Corporation 6 Series Chipset Family KT Controller (rev 04) 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) 00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 1 (rev b4) 00:1c.1 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 2 (rev b4) 00:1c.2 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 3 (rev b4) 00:1c.3 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 4 (rev b4) 00:1c.7 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 8 (rev b4) 00:1d.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation 6 Series Chipset Family LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 6 Series Chipset Family 6 port SATA AHCI Controller (rev 04) 23:00.0 FireWire (IEEE 1394): JMicron Technology Corp. IEEE 1394 Host Controller (rev 30) 23:00.1 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30) 23:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30) 24:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 (rev 34) 25:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) **\# cat /proc/acpi/wakeup** Device S-state Status Sysfs node LANC S0 *enabled pci:0000:00:19.0 EHC1 S3 *enabled pci:0000:00:1d.0 EHC2 S3 *enabled pci:0000:00:1a.0 PCIB S5 *disabled RP02 S4 *disabled pci:0000:00:1c.1 ECF0 S4 *disabled RP03 S4 *disabled pci:0000:00:1c.2 RP04 S5 *disabled pci:0000:00:1c.3 WNIC S5 *disabled pci:0000:24:00.0 RP08 S4 *disabled pci:0000:00:1c.7 HST1 S5 *disabled Any ideas?

My laptop is slow and unresponsive when running in battery; it works fawless when connected to ac power. In the past I used to have tlp/laptopmode-tools but since Linux 3.x I have uninstalled both. Battery last long but usability is poor. This is happening on a dell xps 13 with ivybridge CPU and Archlinux x64 with either stock kernel or ck kernel, gnome shell. Is there anything I can tweak in order to get better performance/responsiveness on battery (I'm willing to loose some battery life).

**Question:** I want to look at parameters under /sys/class/typec, but on my laptop, this doesn't show up. When I load the typec module manually, the directory appears but it is empty. After loading tcpm module, nothing happens. How do I get the /sys/class/typec interface? How can I know if it is even supported? If it isn't, why not -- does my hardware not expose the controls? Are drivers missing? etc. The laptop is a HP ProBook 430 G5 (based on intel 8gen Kaby Lake Refresh core i5). It has one USB-C port capable of USB Power Delivery (alongside DisplayPort and regular USB traffic). I'm on Linux Mint Sylvia, my kernel is 4.15.3 from kernel.ubuntu.com (installed through ukuu tool). This should be recent enough that all the relevant kernel things exist. Why don't I see them? (I also want to learn a little about the TypeC interface, hence why I'm asking this specific question, as opposed to the more task-oriented variant seen below.) --- **Background,** AKA, why am I even doing this, in case this is helpful: HP hardware is notorious for disliking 3rd party USB-C chargers, but this got somewhat better in the 8gen series; it sort of works now. I'm using the following USB-C dock: http://i-tec.cz/?t=3&v=443 When the laptop is on AC power, I can connect the dock and everything works fine. When I disconnect the AC adapter, the laptop _will continue to charge_ over the USB-C connection. Same thing happens when I connect the dock when laptop is turned off. However, if I simply plug in the dock when the laptop is on AC power, it doesn't work at all. No charging, no devices, not even a connect event. Furthermore, the laptop starts making a slight clicking sound. In Windows, this is accompanied by repeated connect/disconnect sounds. In dmesg, I see messages like this:

[10356.375855] xhci_hcd 0000:00:14.0: Cannot set link state.
[10356.375866] usb usb2-port2: cannot disable (err = -32)

(yes, this might be a hardware problem) However, if the problem lies with power delivery (as it seems to be, given the "plug in while on AC" thing), I'd like to try to switch the port to a non-PD mode. Then I could at least get the dock functionality. This seems to be done through USB Type-C Port Manager (tcpm) interface. I don't have that on my laptop. /sys/class/typec doesn't exist initially, shows up empty after inserting typec module.

I am looking for a Linux OS that will support my older hardware in my laptop (from 2014). I would like to have a simple, not bloated desktop, but also not too ancient-looking ;) *edit*: By "hardware" I mainly mean wifi and webcam - I do expect Linux to run on a ten-year-old cpu. Here's some more information: The laptop is an HP pro Book, in case that matters. Linux really caught me when I started to use ElementaryOS something like 15 years ago. I have been happy with ElementaryOS, but the recent versions don't seem to support my hardware. At least, it didn't work anymore after an update. So I want to move away from this. (It also doesn't support my USB camera on my computer) Last time I used Ubuntu it brought a lot of bloatware like Amazon search and strange stuff. Also I don't know how well Ubuntu supports old hardware. Maybe Debian with a modern desktop might be a solution for me? Or does this not depend on the distro, but more on something else (like the kernel)? Edit: Using a live version of Ubuntu was a good idea. I booted from it and got greeted with a "missing firmware" message that seems common (many questions on that on the internet). So I've got a starting point although I haven't yet fixed that. My webcam worked out of the box :):) yeah!

I couldn't connect to my Bluetooth keyboard, with the following error message:

[  186.859882] Bluetooth: Unexpected continuation frame (len 11)
[  189.410011] Bluetooth: hci0: unexpected SMP command 0x0b from dc:56:10:d6:c4:06

I'm using Ubuntu on a laptop. My old WiFi adapter was MT7922, which didn't have good drivers for Linux and resulted in sometimes very slow inconsistent WiFi connections. Therefore, recently I switched to an AM210 adapter. Bluetooth worked in general. With the old MT7922 adapter, this keyboard could connect. With the AM210 adapter on Windows, the keyboard connects as well. I wonder if the 'Unexpected continuation frame' was because the keyboard thinks it is still talking to the old adapter. I tried resetting the keyboard, however it didn't work. Any clues? Thanks!

I'm running Arch Linux on my laptop and have an external monitor connected via HDMI. I want to close the laptop lid while using the external monitor, but I want the laptop's internal speakers to keep working because I don’t have external speakers on the monitor. I’ve already configured my power management settings to prevent the system from suspending when the lid is closed. Specifically, I’ve edited the /etc/systemd/logind.conf file with the following settings:

HandleLidSwitch=ignore
HandleLidSwitchExternalPower=ignore

However, even after this, the laptop’s internal screen still turns off when I close the lid, which is not what I want. I’d like to only turn off the internal screen while keeping the speakers active and the system running as usual. I have also checked the power settings in KDE Plasma and set it to "Do nothing" when the lid is closed, but the issue persists. What am I missing or doing wrong? How can I close the lid and turn off the screen while keeping the internal speakers working when using an external monitor?

I'm running Fedora 15 Gnome on a laptop. I can't seem to find an option to toggle if the laptop goes to sleep when the lid closes. There are certain times where I want to put the laptop away or close it but still have it do some crunching on some long running task Is there a place to toggle this option?