Bryce,

I understand your position and mostly agree. I believe the offending
patch is a workaround allowing compiz to work correctly without 'Option
"XaaNoOffscreenPixmaps' being present in your xorg.conf. User of ATI and
Intel cards have reported crashes (in the case of ATI) and freezes (for
Intel) with EXA, and using the patched X server attached above solves
the problem.

Ideally this patch should be "revised" in the sense that whatever it
does, it only does it when XAA is active; I would assume this will
resolve this bug without sacrificing functionality for either
acceleration architecture.

Another note: if Xorg7.3 (and hopefully the latest DRM modules to enable
the new Mesa TTM memory manager), EXA will be substantially faster than
before due to Michel Danzer's aiglx-zero-copy-tfp patches, but XAA won't
benefit. So there's a good reason to revise this patch, aside from
increasing system stability.

-- 
[Fixed] Intel driver (using EXA) crashes system when starting compiz
https://bugs.launchpad.net/bugs/126425
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