Created attachment 33635 [details]
dmesg output after starting X session
- starting or running an X session
- using DirectFB to e.g. play movies in vlc or mplayer from a console login
circular locking dependency warnings appear in dmesg.
Afterwards, X can hang or crash outright but at other times does not appear affected. Video output in framebuffer is always highly corrupted (not sure if this is a separate bug).
Created attachment 33636 [details]
dmesg output - running mplayer in fb
Problem gone with latest DRM and kernel RC.