Ubuntu
xserver-xorg-video-intel package

  1. Bug #252094
  2. Comment #236

Comment 236 for bug 252094

Revision history for this message
nbubis (nbubis) wrote : Re: [i965] Poor graphics performance and rendering errors on Intel GM965 system, Ubuntu 8.10

I posted something similar here (maybe they should merged?)

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/309838

In short, I experienced a severe performance drop after moving to jaunty alpha 2 from intrepid - since hardware acceleration is now no longer working (using a 965GM.).

relevant parts from xorg log:

(WW) intel(0): libpciaccess reported 0 rom size, guessing 64kB
(WW) intel(0): Register 0x61200 (PP_STATUS) changed from 0xc0000008 to 0xd000000a
(WW) intel(0): PP_STATUS before: on, ready, sequencing idle
(WW) intel(0): PP_STATUS after: on, ready, sequencing on
(WW) intel(0): ESR is 0x00000001
(WW) intel(0): PRB0_CTL (0x0001f001) indicates ring buffer enabled
(WW) intel(0): Existing errors found in hardware state.
(WW) intel(0): Option "UseFBDev" is not used
(WW) intel(0): ESR is 0x00000001
(WW) intel(0): PRB0_CTL (0x0001f001) indicates ring buffer enabled
(WW) intel(0): Existing errors found in hardware state.

(EE) intel(0): underrun on pipe B!
(EE) intel(0): underrun on pipe B!
(EE) intel(0): underrun on pipe B!