Dear Maintainer,

My desktop machine has 2 GPUs. One Intel, came with my i5, and other is nVidia
GT610. On nVidia card I have 2 displays configured, while Intel card just runs
TV. Some time ago I noticed, on TV, tearing around cursor and graphical
glitches. Further investigation led me to these few lines in X.Org log files:


[     3.854] (II) Loading sub module "dri2"
[     3.854] (II) LoadModule: "dri2"
[     3.854] (II) Module "dri2" already built-in
[     5.987] (EE) intel(G0): [drm] failed to set drm interface version:
Permission denied [13].
[     5.987] (EE) intel(G0): Failed to claim DRM device.
[     5.987] (II) UnloadModule: "intel"


My X.Org configuration consists of having nVidia displays as one X.Org screen
and TV as other. So they are both accessible during my work, but I can't move
windows from one to another. This use to work properly until some time ago.
Since I don't use TV all that much, it's hard for me to estimate when but if I
had to guess I'd say month to couple of months ago.