** Description changed:

  I experience significant performance loss with ubuntu 8.10 alpha 3 with my 
Intel DG965WH based system and SVDO/ADD2 video card. Actually, the performance 
loss started with ubuntu 8.04.1; I upgraded to see if there was any performance 
gain with the new version. While "glxgears" produced values between 1580 fps 
and 1496 fps with ubuntu 7.04 and 7.10, respectively, now I can only achieve 
something like 445 fps with ubuntu 8.10 alpha 3. I get an error message when 
starting glxgears that "TTM" was not available and classic mode would be used. 
Similary, the flight simulator "flightgear" achieves frames rates of 1-2 fps 
only.
  My suspicion is that some of the hardware acceleration features of the X3000 
system are not being used, and I don't know how to activate them with the new 
xorg.conf structure and the underlying automatic configuration approach.
  I would like to see the graphics performance go back to the values achieved 
in ubuntu 7.04 and 7.10.
  Your help / comment is greatly appreciated.
  Bingo
  
  [Update]
  Intel upstream has been in a multi-year effort to rearchitect X and the Intel 
2D and 3D driver to provide better performance.  While this work is underway, 
people are seeing variations in performance levels from version to version, for 
a variety of reasons.  There are probably multiple unrelated bugs being 
reported in the comments here.
  
  It is important to note and remember that glxgears is *not* a benchmark
  tool.  It simply measures how fast the driver writes images to the
  screen, whereas most 3D applications are limited by render speed, not
  merely blit speed.  Instead use a 3D game (flightgear, tremulous, etc.)
  that has a real rendering workload to make comparisons.
  
  If you're definitely seeing performance problems and are able to narrow
  it to a specific cause, please do not comment onto this bug report -
  it's too lengthy and rambling already, and your issue will just be lost
  in the noise.  Instead, make a new report and please be as specific as
  possible with exact steps to reproduce and as much detail and logs as
  you can.  See http://wiki.ubuntu.com/X/Reporting for tips on making a
  good X bug report.
+ 
+ A troubleshooting guide, with additional background about performance
+ issues on Intel is available at:
+ 
+ https://wiki.ubuntu.com/X/Troubleshooting/IntelPerformance

-- 
MASTER: Poor graphics performance on Intel
https://bugs.launchpad.net/bugs/252094
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