[Bug 92518] Radeon 7870 XT Stalling Between Ring 0 and Ring 3

https://bugs.freedesktop.org/show_bug.cgi?id=92518

--- Comment #12 from Michel Dänzer michel@daenzer.net --- (In reply to benli1392 from comment #9)

I updated my openSUSE Tumbleweed system to kernel 4.3 and tried to enable DRI3 by creating a 20-radeon.conf file at /etc/X11/xorg.conf.d/ with the contents:

Section "Device" Identifier "Radeon 7870 XT" Option "DRI3" "on" EndSection

Please just put this in /etc/X11/xorg.conf. The xorg.conf.d mechanism is for shipping configuration snippets in packages.

I restarted and checked the Xorg.0.log and it seems that DRI3 is not used even when specified to. I am attaching the newest dmesg and xorg logs.

Your Xorg radeon driver is too old, DRI3 is only supported by recent xf86-video-ati Git.