Ubuntu
xorg-server package

  1. Bug #126425
  2. Comment #12

Comment 12 for bug 126425

Revision history for this message
Conn O Griofa (psyke83) wrote : Re: [Fixed] Intel driver (using EXA) crashes system when starting compiz

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.