I think I faced this exactly same crash today on Slackware 14.2 x86 system.
Chromium was loading some page while whole X freezes. i was able to SSH in to the system but only restart really fixed the system.
OS info : Slackware 14.2
kernel : 4.4.14 #2 SMP Fri Jun 24 13:38:27 CDT 2016 x86_64 Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz GenuineIntel GNU/Linux
GPU: 01:00.0 VGA compatible controller: NVIDIA Corporation G84GL [Quadro FX 370] (rev a1)
Packet / library info & versions kernel-huge-4.4.14-x86_64-1 mesa-11.2.2-x86_64-1 xf86-video-nouveau-1.0.12-x86_64-1 xorg-server-1.18.3-x86_64-2
I attach some xorg log and kernel log
I think I faced this exactly same crash today on Slackware 14.2 x86 system.
Chromium was loading some page while whole X freezes. i was able to SSH in to the system but only restart really fixed the system.
OS info :
Slackware 14.2
kernel : 4.4.14 #2 SMP Fri Jun 24 13:38:27 CDT 2016 x86_64 Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz GenuineIntel GNU/Linux
GPU: 01:00.0 VGA compatible controller: NVIDIA Corporation G84GL [Quadro FX 370] (rev a1)
Packet / library info & versions huge-4. 4.14-x86_ 64-1 2.2-x86_ 64-1 nouveau- 1.0.12- x86_64- 1 1.18.3- x86_64- 2
kernel-
mesa-11.
xf86-video-
xorg-server-
I attach some xorg log and kernel log