Comment # 1 on bug 911359 from Alexander Trubitsyn

Created attachment 618463 [details]
messages file then run gdb glxinfo

see 
kernel: [  137.818022] nouveau W[   PFIFO][0000:00:05.0] unknown intr
0x00400000, ch 1
kernel: [  142.125534] nouveau E[  PGRAPH][0000:00:05.0] idle timed out with
status 0x00000409
kernel: [  144.137868] nouveau W[   PFIFO][0000:00:05.0] unknown intr
0x00400000, ch 1
kernel: [  148.060141] nouveau E[  PGRAPH][0000:00:05.0]  ERROR nsource:
METHOD_CNT nstatus: INVALID_STATE
kernel: [  148.060141] nouveau E[  PGRAPH][0000:00:05.0] ch 1 [0x00048000
Xorg[1053]] subc 5 class 0x008a mthd 0x042c data 0xe88e95b6