Bug#689268: Intel HD 4000 (Ivy Bridge) graphics freeze

[Jonathan Nieder <jrnieder@gmail.com>]

Per Foreby wrote:
> On 2012-10-21 21:02, Jonathan Nieder wrote:

>> Good, it looks like the vesa driver is loading instead of the i915
>> driver.  Can you reproduce the bug in this setup?
>
> Everything is OK so far, and I hardy notice any difference (apart from
> having to enable software scaling in mplayer2, but that's not a problem with
> an i7 3770 :)
>
> I'll give it a few days,

Thanks again for this.

>                          and then I'll try "enable_mtrr_cleanup".
>
>> If not, we will have shown the bug is probably in the i915 driver and
>> we can take this upstream.
>
> Or maybe not, since I didn't experience any problems on the 3.5 kernel. With
> 256 MB GPU memory though.

Oh, right --- I had forgotten.  I think we should still move upstream
after the experiment with vesa, though, and just be sure to mention
which kernels were tried and what happened with each.  Instructions
for reporting are here:

 http://intellinuxgraphics.org/how_to_report_bug.html

When doing so, please let us know the bug number so we can track it.
I hate to sound like a broken record, but I still have no reason to
believe the mtrr stuff is not a red herring.

Jonathan