[Bug 75394] System hangs randomly with error message: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75394

--- Comment #68 from Chris <cpollock at embarqmail.com> ---
Is there any kind of an update that can be posted here by those working on this
bug to let us know the status? I've also enclosed a screen shot of my
background that is displaying incorrectly. I thought I had this fixed when
Chris Wilson had me do this

Ok, I think it is the recent sw detiling that is broken. Could you
please compile xf86-video-intel with

        ./autogen.sh --prefix=/usr --enable-debug=full

and grab the Xorg.0.log file from that. It will be huge, but I only want
say the first 2500 lines and it should compress with xz very well.

Then in src/sna/kgem.c, line 86, there is

#define DBG_NO_WC_MMAP 0

could you change that to

#define DBG_NO_WC_MMAP 1

and recompile, install and retest?

back on 1 April this year. 

Currently my uptime without a freeze is a little over 13 days so if things go
as they have been it's due about any time.

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