This issue is no longer present in Ubuntu 22.04. Wile using Ubuntu 21.10, the following workarounds also remedied the issue: - Run a mainline 5.15.x kernel from https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D - Run the Jammy Jellyfish kernel from https://packages.ubuntu.com/jammy/linux-image-generic In both cases, it's necessary to install libssl3 from Jammy Jellyfish as well (see https://askubuntu.com/a/1389586/117513).
Ultimately, since Ubuntu 21.10 is rapidly approaching EoL, it makes sense to upgrade to Ubuntu 22.04. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1954843 Title: amdgpu_bl0: Failed to write system 'brightness' attribute: Invalid argument Status in linux package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Confirmed Bug description: Ubuntu 21.10 does not succeed at setting the display brightness after booting (either to the GNOME login screen or to a logged-in user's desktop). The brightness is at its highest level until I adjust it with keyboard shortcuts or a GUI tool. The systemd-backlight@backlight:amdgpu_bl0 service seems to fail during startup, but I can subsequently run it after startup and it succeeds (and restores brightness): mdmower@T14S ~ $ sudo systemctl status systemd-backlight@backlight:amdgpu_bl0 [sudo] password for mdmower: × systemd-backlight@backlight:amdgpu_bl0.service - Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0 Loaded: loaded (/lib/systemd/system/systemd-backlight@.service; static) Active: failed (Result: exit-code) since Tue 2021-12-14 13:26:05 PST; 30s ago Docs: man:systemd-backlight@.service(8) Process: 962 ExecStart=/lib/systemd/systemd-backlight load backlight:amdgpu_bl0 (code=exited, status=1/FAILURE) Main PID: 962 (code=exited, status=1/FAILURE) CPU: 3ms Dec 14 13:26:05 T14S systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0... Dec 14 13:26:05 T14S systemd-backlight[962]: amdgpu_bl0: Failed to write system 'brightness' attribute: Invalid argument Dec 14 13:26:05 T14S systemd[1]: systemd-backlight@backlight:amdgpu_bl0.service: Main process exited, code=exited, status=1/FAILURE Dec 14 13:26:05 T14S systemd[1]: systemd-backlight@backlight:amdgpu_bl0.service: Failed with result 'exit-code'. Dec 14 13:26:05 T14S systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0. mdmower@T14S ~ $ sudo systemctl start systemd- backlight@backlight:amdgpu_bl0 mdmower@T14S ~ $ sudo systemctl status systemd-backlight@backlight:amdgpu_bl0 ● systemd-backlight@backlight:amdgpu_bl0.service - Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0 Loaded: loaded (/lib/systemd/system/systemd-backlight@.service; static) Active: active (exited) since Tue 2021-12-14 13:26:45 PST; 1s ago Docs: man:systemd-backlight@.service(8) Process: 5119 ExecStart=/lib/systemd/systemd-backlight load backlight:amdgpu_bl0 (code=exited, status=0/SUCCESS) Main PID: 5119 (code=exited, status=0/SUCCESS) CPU: 5ms Dec 14 13:26:45 T14S systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0... Dec 14 13:26:45 T14S systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:amdgpu_bl0. ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: xorg 1:7.7+22ubuntu2 ProcVersionSignature: Ubuntu 5.13.0-22.22-generic 5.13.19 Uname: Linux 5.13.0-22-generic x86_64 ApportVersion: 2.20.11-0ubuntu71 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: pass CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Tue Dec 14 13:29:38 2021 DistUpgraded: Fresh install DistroCodename: impish DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [1002:1638] (rev d1) (prog-if 00 [VGA controller]) Subsystem: Lenovo Cezanne [17aa:5095] InstallationDate: Installed on 2021-12-12 (2 days ago) InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012) MachineType: LENOVO 20XF004WUS ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-22-generic root=UUID=859a72cc-a3fe-470f-b525-37b151408289 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/08/2021 dmi.bios.release: 1.14 dmi.bios.vendor: LENOVO dmi.bios.version: R1NET44W (1.14) dmi.board.asset.tag: Not Available dmi.board.name: 20XF004WUS dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.14 dmi.modalias: dmi:bvnLENOVO:bvrR1NET44W(1.14):bd11/08/2021:br1.14:efr1.14:svnLENOVO:pn20XF004WUS:pvrThinkPadT14sGen2a:rvnLENOVO:rn20XF004WUS:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20XF_BU_Think_FM_ThinkPadT14sGen2a: dmi.product.family: ThinkPad T14s Gen 2a dmi.product.name: 20XF004WUS dmi.product.sku: LENOVO_MT_20XF_BU_Think_FM_ThinkPad T14s Gen 2a dmi.product.version: ThinkPad T14s Gen 2a dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.107-8ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.2-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2build1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1build1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1954843/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
