カーネルエラー: systemd-backlight@backlight:acpi_video0.service

カーネルエラー: systemd-backlight@backlight:acpi_video0.service

起動時に常にこのエラーが発生します。重大な問題がありますか?では、どうすれば解決できますか?私はこれが私のAMD GPUに関連していることを知っています。これは私の設定です。

  • CPU: AMD A9-9420 RADEON R5、コンピューティングコア5個 2C+3G、2586MHz
  • GPU: ATI Stoney [Radeon R2/R3/R4/R5グラフィックカード]、AMD ATI Radeon R5 M230 / R7 M260DX / Radeon 520 Mobile
  • 4GB RAM、250GB SSD
  • オペレーティングシステム: Linux manjaro 5.9.16-1-MANJARO #1 SMP PREEMPT Mon Dec 21 22:00:46 UTC 2020 x86_64 GNU/Linux

また、最後のブートのカーネルログは次のようになります。

Mar 16 09:24:57 manjaro systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:acpi_video0...
 Subject: A start job for unit systemd-backlight@backlight:acpi_video0.service has begun execution
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
 
 A start job for unit systemd-backlight@backlight:acpi_video0.service has begun execution.

 The job identifier is 1270.
Mar 16 09:24:57 manjaro systemd-backlight[875]: Failed to get backlight or LED device 'backlight:acpi_video0': No such device
Mar 16 09:24:57 manjaro systemd[1]: systemd-backlight@backlight:acpi_video0.service: Main process exited, code=exited, status=1/FAILURE
 Subject: Unit process exited
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
 
 An ExecStart= process belonging to unit systemd-backlight@backlight:acpi_video0.service has exited.
 
 The process' exit code is 'exited' and its exit status is 1.
Mar 16 09:24:57 manjaro systemd[1]: systemd-backlight@backlight:acpi_video0.service: Failed with result 'exit-code'.
 Subject: Unit failed
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
The unit systemd-backlight@backlight:acpi_video0.service has entered the 'failed' state with result 'exit-code'.
Mar 16 09:24:57 manjaro systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0.
 Subject: A start job for unit systemd-backlight@backlight:acpi_video0.service has failed
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
 
 A start job for unit systemd-backlight@backlight:acpi_video0.service has finished with a failure.
 
 The job identifier is 1270 and the job result is failed.
Mar 16 09:24:57 manjaro audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-backlight@backlight:acpi_video0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed'
Mar 16 09:24:57 manjaro kernel: audit: type=1130 audit(1615879497.236:64): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-backlight@backlight:acpi_video0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed'
Mar 16 09:24:57 manjaro systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:acpi_video1...
 Subject: A start job for unit systemd-backlight@backlight:acpi_video1.service has begun execution
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
 
 A start job for unit systemd-backlight@backlight:acpi_video1.service has begun execution.
 
 The job identifier is 1276.
Mar 16 09:24:57 manjaro systemd-backlight[876]: Failed to get backlight or LED device 'backlight:acpi_video1': No such device
Mar 16 09:24:57 manjaro systemd[1]: systemd-backlight@backlight:acpi_video1.service: Main process exited, code=exited, status=1/FAILURE
 Subject: Unit process exited
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
 
 An ExecStart= process belonging to unit systemd-backlight@backlight:acpi_video1.service has exited.
 
 The process' exit code is 'exited' and its exit status is 1.
Mar 16 09:24:57 manjaro systemd[1]: systemd-backlight@backlight:acpi_video1.service: Failed with result 'exit-code'.
 Subject: Unit failed
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
 
 The unit systemd-backlight@backlight:acpi_video1.service has entered the 'failed' state with result 'exit-code'.
Mar 16 09:24:57 manjaro systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video1.
 Subject: A start job for unit systemd-backlight@backlight:acpi_video1.service has failed
 Defined-By: systemd
 Support: https://forum.manjaro.org/c/support
 
 A start job for unit systemd-backlight@backlight:acpi_video1.service has finished with a failure.
The job identifier is 1276 and the job result is failed.
Mar 16 09:24:57 manjaro audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-backlight@backlight:acpi_video1 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed'
Mar 16 09:24:57 manjaro kernel: audit: type=1130 audit(1615879497.263:65): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-backlight@backlight:acpi_video1 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed'
Mar 16 09:24:57 manjaro ModemManager[412]: <info>  [base-manager] couldn't check support for device '/sys/devices/pci0000:00/0000:00:02.3/0000:03:00.0': not supported by any plugin

答え1

ファイルを編集/etc/default/grubし、次のパラメータを追加します。GRUB_CMDLINE_LINUX:

$ sudo nano /etc/default/grub

GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=vendor"

update-grub後で走ることを忘れないでください。

私にとって、これは問題を解決しました!かなり古いGPUであるATI/AMDにインストールしました。また、これは画面の明るさ調整機能を損なわないことにも言及したいと思います。

あなたのhtopの価値が低くなり、ひげが成長することを願っています!

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