https://bugzilla.kernel.org/show_bug.cgi?id=203905 --- Comment #32 from Filip Hejsek (filip.hejsek@xxxxxxxxx) --- The acpi_video error seems to be https://github.com/systemd/systemd/issues/15329 - first the ACPI driver creates acpi_video1 device, then amdgpu removes it in favor of amdgpu_bl1, but systemd still tries to set brightness on the removed device (which fails). You can remove the error by masking `systemd-backlight@backlight:acpi_video1.service`. The amdgpu_bl1 error is probably the bug i linked earlier - https://bugzilla.kernel.org/show_bug.cgi?id=210263. Do you have silent boot? If yes, you need to print something to console before setting backlight during boot. You can use the workaround i posted here: https://bbs.archlinux.org/viewtopic.php?pid=1971198#p1971198. If you use my workaround, make sure to remove other workarounds you may have applied for that error (like another service that runs systemctl start systemd-backlight@backlight:amdgpu_bl0). -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.