Hello there. First of all, I’m new here, this is my brand first post here, so, if I do something wrong, just tell me. That said, here’s my problem:
Yesterday I’ve installed the last version of Manjaro XFCE (on the stable release) on my laptop. The Live USB booted and did its things with no problems. But after restarting it gets stuck, outputing two lines saying Light Display Manager failed to load and the same thing for Systemd-backlight…
I’ll leave here the output with the details of systemctl on both services:
× systemd-backlight@backlight:acpi_video1.service - Load/Save Screen Backlight Brightness of backlight:acpi_video1
Loaded: loaded (/usr/lib/systemd/system/systemd-backlight@.service; static)
Active: failed (Result: exit-code) since Tue 2021-09-07 15:58:30 CEST; 1h 40min left
Docs: man:systemd-backlight@.service(8)
Process: 1039 ExecStart=/usr/lib/systemd/systemd-backlight load backlight:acpi_video1 (code=exited, status=1/FAILURE)
Main PID: 1039 (code=exited, status=1/FAILURE)
CPU: 6ms
sep 07 15:58:30 linux-legion-5 systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:acpi_video1...
sep 07 15:58:30 linux-legion-5 systemd-backlight[1039]: Failed to get backlight or LED device 'backlight:acpi_video1': No such device
sep 07 15:58:30 linux-legion-5 systemd[1]: systemd-backlight@backlight:acpi_video1.service: Main process exited, code=exited, status=1/FAILURE
sep 07 15:58:30 linux-legion-5 systemd[1]: systemd-backlight@backlight:acpi_video1.service: Failed with result 'exit-code'.
sep 07 15:58:30 linux-legion-5 systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video1.
I’ve noticed that if I turn off completely the system and turn it on again it fails, but if you only restart it will not fail at all… True it is that I can make it work manually with systemctl start lightdm.service.
I’ve got a workaround at the moment with LXDM, but I would prefer having back LightDm.
With this systemd-backlight: I don’t think is making the boot process stop, nor having problems with the brightness at all… Is it serious?
Thanks in advance to all of you. I’m looking forward for answers
I would think that the gpu is not initialized properly at a cold boot. Maybe try to disable “fast boot” or set it to “full initialization” at your UEFI.
@megavolt think I don’t have such option on UEFI…? I’ve tried to look up on all settings in UEFI but I can’t seem to find it. Tried doing a search in Google, but nothing…
I think it was solved… I’m going to put back the lightdm.service and see if it works…
BTW, some weeks ago I tried installing Manjaro GNOME, and nothing of this happened…