[Bug 91864] [SKL Regression] 2D and 3D accelerated programs are slow after booting on 4.2.0-rc8 drm-intel-nightly kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91864

--- Comment #9 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to Olivier Berthier from comment #8)
> Created attachment 118075 [details]
> xsession-errors file
> 
> I add startx stderr and xsession-errors files.
> Maybe this is related to these two lines :
> 
> libGL error: pci id for fd 4: 8086:191e, driver (null)
> i965_dri.so does not support the 0x191e PCI ID.

Yes, X is not using the right i965_dri.so. No idea how different kernels affect
that, and that should not be impacting 2D either.

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