Bjoern Voigt composed on 2016-04-05 22:36 (UTC+0200):
With my old ATI Radeon graphics card and the Open Source driver radeon I was able to run multiple X sessions with one graphics card and one display, e.g. KDE Plasma on tty7 and GNOME on tty8.
I tried the same with my NVidia card and the proprietary driver. The second X session (started from KDE Plasma 5 menu; display manager is SDDM) fails. /var/log/Xorg.1.log says:
[ 29452.803] (II) xfree86: Adding drm device (/dev/dri/card0) [ 29452.803] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied [...]
It isn't only a permissions problem. Also when I change the permissions on /dev/dri/card0 manually to crw-rw-rw-+ the second session does not start, but replaces the first session.
I also tried this trick without success (/etc/X11/xorg.conf.d/50-device.conf is correct for openSUSE Tumbleweed):
50-device.conf as it comes from its rpm is nothing but comments, a dummy file except for a bit of instruction.
Launching multiple X sessions with proprietary NVIDIA on Xorg 1.16 https://wiki.archlinux.org/index.php/xorg#Launching_multiple_X_sessions_with...
Any tips?
Why proprietary rather than FOSS driver? I have GeForce 8400GS (GT218) running TW 20160406, without using startup xrandr or any non-default configuration in xorg.conf*, with Plasma sessions on tty3 (simply startx) and tty4 (startx -- :1) and IceWM (startx /usr/bin/icewm) on tty5, all same user login. Other than not finding them on tty7 & up where they used to be, they seem to work same as always, as with Intel or ATI gfxchips. -- "The wise are known for their understanding, and pleasant words are persuasive." Proverbs 16:21 (New Living Translation) Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/ -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org