Testing with GK106GLM [Quadro K2100M], QHD+ (3200x1800) screen.

Environment : Fedora 20 with kernel 3.14 and darktama's git 
633e16bb8571071b9da8ed03513a2266cbf21eb5.

When switching to a VT, and afterwards switching back to the X session, X
crashes.


Abrt data available :

Apr  3 11:55:34 cn0042 abrt-hook-ccpp: Saved core dump of pid 1237
(/usr/bin/Xorg) to /var/tmp/abrt/ccpp-2014-04-03-11:55:34-1237 (198725632
bytes)
Apr  3 11:55:34 cn0042 abrt-server: Generating core_backtrace
Apr  3 11:55:34 cn0042 abrt-server: Generating backtrace


dmesg output :

[  504.935039] nouveau E[Xorg[1237]] failed to idle channel 0xcccc0000
[Xorg[1237]]
[  519.921691] nouveau E[Xorg[1237]] failed to idle channel 0xcccc0000
[Xorg[1237]]
[  522.538824] nouveau E[  PGRAPH][0000:01:00.0] HUB_INIT timed out
[  522.538828] nouveau E[  PGRAPH][0000:01:00.0] 409000 - done 0x00000220
[  522.538832] nouveau E[  PGRAPH][0000:01:00.0] 409000 - stat 0x00000000
0x00000000 0x00000000 0x00000000
[  522.538836] nouveau E[  PGRAPH][0000:01:00.0] 409000 - stat 0x00000000
0x00000000 0x00000006 0x00000001
[  522.538838] nouveau E[  PGRAPH][0000:01:00.0] 502000 - done 0x00000300
[  522.538842] nouveau E[  PGRAPH][0000:01:00.0] 502000 - stat 0x00000000
0x00008c00 0x00000000 0x00000000
[  522.538847] nouveau E[  PGRAPH][0000:01:00.0] 502000 - stat 0x00000000
0x00000000 0x00000000 0x00000000
[  522.538849] nouveau E[  PGRAPH][0000:01:00.0] 50a000 - done 0x00000300
[  522.538853] nouveau E[  PGRAPH][0000:01:00.0] 50a000 - stat 0x00000000
0x00000000 0x00000000 0x00000000
[  522.538857] nouveau E[  PGRAPH][0000:01:00.0] 50a000 - stat 0x00000000
0x00000000 0x00000000 0x00000000
[  522.538858] nouveau E[  PGRAPH][0000:01:00.0] init failed, -16


(not sure if this should be filed against component Driver/nouveau)