Failed to start Load/Save Screen Backlight Brightness of amdgpu_bl0報錯導致屏幕亮度無法保存

環境

CPU：AMD-4750U
系統：Manjaro20 KDE

解決方法

解決方案原網址：https://www.linux.org/threads/failed-to-start-load-save-screen-backlight-brightness-of-amdgpu_bl1.31998/

1、編寫一個開機啟動服務

sudo vi /etc/systemd/system/startup_brightness.service

文件內容如下所示：

[Unit]
Description=Dummy service for attempting to start the problematic amdgpu_bl0 service

[Service]
Type=oneshot
ExecStart=systemctl start systemd-backlight@backlight:amdgpu_bl0

[Install]
WantedBy=multi-user.target

2、讓服務開機啟動

sudo systemctl enable --now startup_brightness

關機重啟，屏幕亮度能夠自動保存