On Tue, 06 Sep 2011 15:11:12 +0200, Philipp Klaus Krause <[email protected]> wrote:
> Here's the output from git-bisect: > > d74362c9e45689d8d7e3d4bcf6681c4358ef4f2e is the first bad commit > commit d74362c9e45689d8d7e3d4bcf6681c4358ef4f2e > Author: Keith Packard <[email protected]> > 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 -- [email protected]
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