(In reply to Ilia Mirkin from comment #1)
> You shouldn't need to use blob context switching firmware... I'd start by
> removing
> 
> nouveau.config=NvGrUseFW=1
> 
> Also, if this is recent, and you're using libdrm-2.4.60, try downgrading to
> libdrm-2.4.59.

Effectively this is recent, I downgraded to libdrm-2.4.59 and removed the
kernel parameter. I still could reproduce the issue with a secondary screen and
with the primary only, It tried that because I though it could be because of
the secondary display.

relevant output of dmesg when reproducing with two displays:

[  195.394185] compiz[1209]: segfault at 7f23ad5c7580 ip 00007f23ad5c7580 sp
00007ffec56131a8 error 14 in card0[7f23ad7cd000+200000]
[  518.479158] gstglcontext[2295]: segfault at 8 ip 00007f5d39a4272e sp
00007f5b9bffe950 error 4 in libdrm_nouveau.so.2.0.0[7f5d39a3f000+6000]
[  586.592466] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: PBENTRY
[  586.592475] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 10
[gstglcontext[3129]] subc 0 mthd 0x0000 data 0x00000000

relevant output of dmesg when reproducing with a single display:

[  376.359606] nouveau E[   PFIFO][0000:01:00.0] read fault at 0x01b3f00000
[UNSUPPORTED_KIND] from CE2/GR_COPY on channel 0x00bf449000 [unknown]