我总是在启动时收到此错误。有什么重大问题吗？如果有，如何解决？我知道这与我的 AMD GPU 有关。这是我的设置：
- CPU：AMD A9-9420 RADEON R5，5 个计算核心 2C+3G，2586 MHz
- GPU：ATI Stoney [Radeon R2/R3/R4/R5 显卡]、AMD ATI Radeon R5 M230 / R7 M260DX / Radeon 520 Mobile
- 4GB 内存，250GB 固态硬盘
- 操作系统：Linux manjaro 5.9.16-1-MANJARO #1 SMP PREEMPT Mon Dec 21 22:00:46 UTC 2020 x86_64 GNU/Linux
另外，这是上次启动时的内核日志：
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
答案1
编辑该文件/etc/default/grub并将以下参数添加到GRUB_CMDLINE_LINUX:
$ sudo nano /etc/default/grub
GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=vendor"