Bug#495623: xaa?

["Adnan Hodzic" <adnan@foolcontrol.org>]

I had this same problem, except mine was on i965.

I believe (Option   "MigrationHeuristic" "greedy") fixed the scrolling
(somewhat), I tried pretty much everything until I simply switched to
XAA. It could be that you're using old driver (i810 for example),
since as far as I'm concerned both i810 and EXA are obsolete.

So my suggestion is switch to "intel" driver (if you haven't done so
already) and to "XAA". Take a look at my "Device" section from my
xorg.conf

Section "Device"
        Identifier      "Intel Corporation Mobile GM965/GL960
Integrated Graphics"
        Driver  "intel"
        Option   "XAANoOffscreenPixmaps"         "true"
        Option   "DRI"                                        "true"
        Option   "AddARGBGLXVisuals"              "true"
        Option   "RenderAccel"                            "true"
        Option   "VideoOverlay"                           "on"
        Option   "GARTSize"                               "384"
        Option   "DesktopSetup"                          "horizontal"
        Option   "MigrationHeuristic"                    "greedy"
        Option   "AccelMethod"                           "XAA"
        Option   "ExaNoComposite"                     "true"
        # compiz experimental
        Option   "AllowGLXWithComposite"         "true"
EndSection

Hope this helps