Re: drmkms on sandy bridge

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Mon, Sep 15, 2014 at 09:59:11PM -0500, Patrick Welche wrote:
> After a recent -current update, using new drmkms on a sandy bridge,
> I found that e.g., when using firefox, the cpu would hit 100%, all
> would freeze, and I would have to hard reset, so no actual clue on
> the problem.
> 
> This is on a:
> 
> i915drmkms0 at pci0 dev 2 function 0: Intel Sandy Bridge Integrated Graphics Device (rev. 0x09)
> 
> 
> The work around was to pop
> 
> Option      "AccelMethod" "SNA"
> 
> in /etc/X11/xorg.conf, and things are now stable...

Despite the S in SNA meaning "Sandy", this also fixes Ivy bridge for
me (slightly different symptom of UXA on Ivy bridge: no graphics output
at all)

Cheers,

Patrick