[Bug 91495] Periodically video will freeze for no specific reason. Sometimes putting '[drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer elapsed... render ring idle' in syslog

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91495

--- Comment #4 from Chris <cpollock at embarqmail.com> ---
This is getting frustrating to say the least. I don't seem to be getting any
assistance from anyone on what to do to try and solve this. I had another
freeze this afternoon 08/24/2015 after being up for 5d 12h 3m. The system froze
while I was using Firefox this time in Twitter. The freeze happened at
17:45:23. I've noted this time since I've attached the syslog up until my
reboot this evening. I SSH'd into the desktop via my tablet. I ran cat
/sys/class/drm/card0/error and it returned 'No error state collected'. I then
ran cat /sys/kernel/debug/dri/0/i915_swizzle_info and it returned:

bit6 swizzle for X-tiling = none
bit6 swizzle for Y-tiling = none
DDC = 0x00200010
DDC2 = 0x00300030
C0DRB3 = 0x0030
C1DRB3 = 0x0010

I've attached the kern.log and syslog. Again I'd really appreciate some kind of
help on solving this issue whether it's going to a newer kernel than
4.0.0-997-generic #201503310205 SMP Tue Mar 31 02:07:04 UTC 2015 x86_64 x86_64
x86_64 GNU/Linux

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