Bug detailed description:
Blank screen and GPU huang on gnome session when enable compiz on IvyBridge.
There is "Call Trace" in dmesg.When kill the progress of compiz,can enter into gnome desk-session, but OpenGL renderer string:Software Rasterizer.
Pls see the dmesg and i915_error_state.
Created attachment 48025 [details]
Created attachment 48026 [details]
Can you try the patches in this thread?
Those patches make Compiz and GNOME Shell run for me. (GNOME Shell has other issues, but at least runs.)
Test the commit 6a574b5b9b186e2 with above two patches, gnome-session works fine when enable compiz.
On gnome-session with compiz, "Hangcheck" in dmesg when open 8-10 "Terminal"
[drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 4034, at 4034], missed IRQ?
Enable semaphores or disable compiz, can fix this "Hangcheck".
need Jesse's patches into -fixes asap.
*** Bug 38393 has been marked as a duplicate of this bug. ***
*** Bug 38392 has been marked as a duplicate of this bug. ***
Verified with the commit 7c9017e5b77118439952fe8dc22809bae4fae4b6,it works fine.
Closing old verified.