[Bug 194766] [drm:pid12:i915_hangcheck_elapsed] [drm:pid12:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194766

Johannes Lundberg <johalun0 at gmail.com> changed:

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                 CC|                            |johalun0 at gmail.com

--- Comment #59 from Johannes Lundberg <johalun0 at gmail.com> ---
Hi

What DDX driver are you using? If Intel, try switching to/from sna/uxa.
Recommended though is the modesetting driver. I have seen hung GPU sometimes
with Intel but I don't remember if it was sna or uxa. Either way, Intel DDX is
kind of deprecated and modesetting is very stable now. 

Try with this in your xorg.conf 

Section "Device"
        Driver      "modesetting"
EndSection

or simply uninstall xf86-video-intel and it will use modesetting by default.

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