Debugging Linux Mint Cinnamon system freeze

Either Chrome or VLC is causing trouble with the graphics...

tail /var/log/syslog

kernel: [149832.163290] [drm] stuck on render ring

Last happened half an hour earlier, playing an hour long video, Chrome with a few windows open. Apparently Xorg log can show which application caused the freeze.

Intel i7, see lspci for more details on driver specs.

cat /var/log/Xorg.0.log to see X window manager details. accelmethod in the conf somewhere? (no ...intel-conf as suggested)

See:

• mdm/Cinna. freezing problem on Unix Stack Exchange
• intel i915 on Ubuntu forums