Ubuntu
xserver-xorg-video-intel package

  1. Bug #342923
  2. Comment #71

Comment 71 for bug 342923

Revision history for this message
Bartek (tschew) wrote :

fixmtrr.sh should be called just before starting x, even a logout operation resets the MTRR ranges (when using GDM)

I've found that the MTRR fix does not affect performance in the least when run on a system using a display manager for starting X. It seems that the X server is only unable to set the MTRR range itself if it is called by a normal user (eg. using startx), in that case, the MTRR fix has a slight effect on performance on my i915 and g35.

Here are my test results using the 2.6 driver and the 2.4 backport on different configurations on i915 and G35: https://www.hackerspace.lu/wiki/Tracking_intel_performance_regression