Desktop manager won't start, sometimes

fahrgast · 2015-05-13 10:10:05

Edit: I have migrated from kdm to sddm and the problem is just the same.

I have a really weird problem with my laptop (Lenovo E335):

Sometimes, when I boot/reboot my laptop, kdm is started correctly, but other times (maybe more often) kdm won't start, and I need to login as root in a terminal, and run:

$ systemctl restart kdm

After doing this, kdm is always restarted correctly.

Whenever I boot/reboot the system, before kdm is started or fails, I see always these text lines in the console:

[FAILED] Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video
See "systemctl status systemd-backlight@backlight:acpi_video2.service" for details.
Starting Load/Save Screen Backlight Brightness of backlight:radeon_bl0...
[OK] Started Load/Save Screen Backlight Brightness of backlight:radeon_bl0.

When kdm fails, the boot process ends with this screen, and then I have to press Ctrl+Alt+F1 to open the terminal.

When this happens, these lines can be read in /var/log/Xorg.0.log:

(EE) Screen0 deleted because no matching config section.
(II) UnloadModule:  "radeon".
(EE) Device(s) detected, but none match those in the config file.
(EE) no screens found(EE)

What puzzles me is that this only happens sometimes, apparently randomly.

--mod note: changed img tags to url tags. -- WorMzy

Last edited by fahrgast (2015-05-13 20:40:02)

WorMzy · 2015-05-13 10:23:47

Hi fahrgast, welcome to Arch.

Please take a moment to read through the forum etiquette, paying particular attention to the section titled "Pasting pictures and code".

https://wiki.archlinux.org/index.php/Forum_etiquette

Thanks.

fahrgast · 2015-05-13 10:31:16

My apologies, WorMzy. I have already fixed it.

Arch Linux

#1 2015-05-13 10:10:05

Desktop manager won't start, sometimes

#2 2015-05-13 10:23:47

Re: Desktop manager won't start, sometimes

#3 2015-05-13 10:31:16

Re: Desktop manager won't start, sometimes

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