Intel HD 2500 display corruption

[Koop Mast]

On 11-11-2012 7:22, Alex Zepeda wrote:
> Motherboard: Gigabyte Z77M-D3H-MVP
> CPU: i5-3570
> RAM: 32GB
> Display: Dell U2410 via DVI cable/port
>
> FreeBSD 8.3 (amd64):
>
> The VESA driver worked somewhat.  Display corruption and inability to
> restart the X server were the big problems.
>
> FreeBSD 9.1-RC2 (amd64):
>
> Intel driver worked, but display corruption was still an issue.  If I
> tried to play a video, I'd get a GPU hanged, acceleration disabled
> message and then the display corruption would vanish (video wouldn't
> play, however).
>
> FreeBSD 9.1-RC3 (amd64):
>
> Significant display corruption.  Display is unusable, videos play
> (presumably with xvideo) with significant corruption.

This sounds like a problem I heard about, the following patch resolved 
that problem. Could you apply it and rebuild graphics/dri and see if 
that helps?
http://people.freebsd.org/~kwm/mesa-ivybridge.diff

-Koop

> Ubuntu 12.10 live CD (amd64):
>
> Accelerated 2D graphics work perfectly with no noticeable corruption.
>
> Installed software:
>
> # portversion -v -L =
> dri-7.11.2_2,2              >  succeeds port (port has 7.6.1_2,2)
> libGL-7.11.2_2              >  succeeds port (port has 7.6.1_2)
> libGLU-7.11.2_1             >  succeeds port (port has 7.6.1_1)
> libdrm-2.4.31_1             >  succeeds port (port has 2.4.17_1)
> mplayer2-2.0.20120517_1     <  needs updating (port has 2.0.20121103)
> ruby-1.9.3,1                <  needs updating (port has 1.9.3.327,1)
> xf86-video-intel-2.17.0_1   >  succeeds port (port has 2.7.1_4)
> xorg-server-1.10.6_1,1      >  succeeds port (port has 1.7.7_6,1)
>
> Attached are:
>
> dmesg.out: The dmesg output from a 9.1-RC3 kernel after running kenv
> drm.debug=2.
>
> gpu_error_state.txt: An abbreviated output of i915_error_state from the
> RC2 kernel.
>
> pciconf.txt: The output of pciconf -lvb
>
> - alex
>
>
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