Bug#523719: Improvement

[Chris Dos <chris@chrisdos.com>]

Looks like 2.6.30-rc2 provides some improvement with 3D acceleration.  Please see this thread:
http://www.phoronix.com/forums/showthread.php?t=16477

I cleanly applied the patch mentioned for 2.6.28 to 2.6.29:
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-jaunty.git;a=commitdiff_plain;h=f9ca66fcd73275db2c19dcf296360e9244f0332d;hp=da84f1cdd18b1b5c415633e1ce5c3b89c8cddc1
Performance is better, though still very sub par to windows.  Skyrockets screen server or Alien Arena can
actually run about 5 fps or so now.

However, this is not with UXA, but EXA.  It seems that the latest 2.7.0 driver breaks UXA.  If I try to enable
UXA all I get is a black screen when I start X either using KMS or not.  UXA at least worked before 2.7.0.
Though X has been more stable and I haven't had a single X session hang for a few days, so that is another
improvement.

I do see this in my Xserver logs though regarding UXA:
(WW) intel(0): DRI2 requires UXA

If I enable in xorg.conf: Option          "AccelMethod"   "UXA"
It causes the complete black screen.  My xorg.conf section for Device section looks like this:
Section "Device"
        Identifier      "Intel GMA X4500HD a.k.a. G45 and i965"
        Driver          "intel"
        BusID           "PCI:0:2:0"
#       Option          "VideoRam"      "131072"
#       Option          "NoAccel"       "false"
#       Option          "AccelMethod"   "XAA"
#       Option          "AccelMethod"   "EXA"
#       Option          "AccelMethod"   "UXA"
#       Option          "ExaNoComposite" "false"
#       Option          "MigrationHeuristic" "greedy"
#       Option          "Tiling"        "true"
#       Option          "DRI"           "true"
#       Option          "XVideo"        "true"
#       Option          "Legacy3D"      "true"
EndSection


     Chris