On Tue, 06 Sep 2011 15:11:12 +0200, Philipp Klaus Krause <p...@spth.de> wrote:
> Here's the output from git-bisect:
>
> d74362c9e45689d8d7e3d4bcf6681c4358ef4f2e is the first bad commit
> commit d74362c9e45689d8d7e3d4bcf6681c4358ef4f2e
> Author: Keith Packard <kei...@keithp.com>
> Date: Thu Jul 28 14:47:14 2011 -0700
>
> drm/i915: Flush other plane register writes
>
> Writes to the plane control register are buffered in the chip until a
> write to the DSPADDR (pre-965) or DSPSURF (post-965) register
> occurs.
Makes me wonder if this is some interaction between page flipping and
frame buffer compression. Could you try turning it off with the
following kernel command line parameter?
i915.i915_enable_fbc=0
--
keith.pack...@intel.com
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