[Intel-gfx] Video freezes continue to plague me

[Felix Miata]

Chris composed on 2016-03-15 14:50 (UTC-0500):

> My system is a Dell Optiplex 780.

Which? Tower? Desktop? SFF? USFF?

> I've filed several bug reports both
> with the Intel Graphics Bugzilla and the Ubuntu Launchpad pages.
> Initially back when this started in 2014 every 'freeze' would result in
> an error of [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer
> elapsed... render ring idle' in syslog. It would happen every few days
> or so and nothing that was done would correct the problem....

Was ensuring heat is a non-issue also done? SFF & USFF models tend to run 
rather hot, so accumulated dust, and especially tobacco tar, within, 
especially within the power supply, can become an intermittent problem for 
software.
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