FS#46567 - [xorg-server] Switching User with Ligthdm failed with Nvdia graphics card

Attached to Project: Arch Linux
Opened by lesebas (lesebas) - Monday, 05 October 2015, 10:15 GMT
Last edited by Doug Newgard (Scimmia) - Wednesday, 07 October 2015, 15:28 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To No-one
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 1
Private No

Details

I use lightdm as display manager. Xorg-server is installed with nvdia graphics card. VT7 is used to launch the first instance of lightdm, no problem to launch it on start and to open a session. When I use the command ''dm-tools swtich-to-greeter'' , lightdm try to start a new session on VT8. Xorg server try to load nouveau or nv driver but not nvidia, see Xorg.1.log.

Problem solved by creating a file /etc/X11/xorg.conf.d/20-nvidia.conf even if this is supposed not to be compulsory since version 1.8.
   Xorg.1.log (5.9 KiB)
This task depends upon

Closed by  Doug Newgard (Scimmia)
Wednesday, 07 October 2015, 15:28 GMT
Reason for closing:  Not a bug
Additional comments about closing:  Configuration issue
Comment by Jan de Groot (JGC) - Tuesday, 06 October 2015, 06:53 GMT
From your logs:
[ 48425.430] (EE) systemd-logind: failed to get session: PID 13437 does not belong to any known session
[ 48425.430] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 48425.430] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied

X runs unprivileged on your system, but because of the VT-shuffling X will not get permissions from logind, so it doesn't assign the correct driver here.
Comment by lesebas (lesebas) - Tuesday, 06 October 2015, 10:24 GMT
Does it mean this is bug or do I have to configure my system in another way?
Comment by Doug Newgard (Scimmia) - Wednesday, 07 October 2015, 15:27 GMT
https://wiki.archlinux.org/index.php/Xorg#Rootless_Xorg_.28v1.16.29

Loading...