FS#48974 - [linux/drm intel] gdm does not work with latest linux kernel on laptops with hybrid graphics
Attached to Project:
Arch Linux
Opened by pavan yalamanchili (pavanky) - Saturday, 16 April 2016, 09:32 GMT
Last edited by Jan de Groot (JGC) - Friday, 20 May 2016, 10:57 GMT
Opened by pavan yalamanchili (pavanky) - Saturday, 16 April 2016, 09:32 GMT
Last edited by Jan de Groot (JGC) - Friday, 20 May 2016, 10:57 GMT
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Details
GDM starts, but starts blinking and becomes unresponsive
after a few seconds. However, starting gnome via startx
seems to work fine.
The problem is reproducible without nvidia, nvidia-utils and bbswitch installed. My current workaround has been to downgrade to an older linux kernel (and the corresponding nvidia / bbswitch packages). I am attaching the output of journalctl -rb and Xorg logs |
This task depends upon
Edit: it appears from the logs you're using the Intel card for X. Can you try downgrading xf86-video-intel, switching between UXA and SNA rendering modes, or switching to the modesetting ddx?
Looks like the problem is with SNA + linux 4.5-1 kernel with the all xf86-video-intel drivers I have tried so far.
When I switch to UXA, everything works fine (although a bit slower as expected).
I did not try switching the modesetting to ddx.
I probably should. However I have only reproduced the problem with GDM + linux 4.5 + SNA. X seems to work fine if I start gnome without GDM. So I am unsure if it is a problem in the kernel or GDM.
I'll try to narrow it down next weekend and report to the proper upstream.