Arch-Linux
核心錯誤：systemd-backlight@backlight:acpi_video0.service
我總是在啟動時收到此錯誤。有什麼大事嗎，如果是，如何解決？我知道這與我的 AMD GPU 有關。這是我的設置：
- 處理器：AMD A9-9420 RADEON R5，5 個計算核心 2C+3G，2586 MHz
- GPU：ATI 斯通尼$$ Radeon R2/R3/R4/R5 Graphics $$, AMD ATI Radeon R5 M230 / R7 M260DX / Radeon 520 移動
- 4GB 記憶體，250GB 固態硬碟
- 作業系統：Linux 儲存 5.9.16-1-SHAPE #1 SMP PREEMPT Mon Dec 21 22:00:46 UTC 2020 x86_64 GNU/Linux
這也是上次啟動的核心日誌：
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
編輯文件
/etc/default/grub並將以下參數添加到GRUB_CMDLINE_LINUX:$ sudo nano /etc/default/grub GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=vendor"之後不要忘記跑步
update-grub。對我來說解決了這個問題！我在 ATI/AMD 上安裝了它，這是一個相當舊的 gpu。我還想提到這一點，並沒有破壞調整螢幕亮度的能力。
願你的 htop 統計數據低，你的鬍鬚長長！