Render acceleration ATI Radeon Mobile 9100

[David R. Litwin]

I have a Toshiba A70 laptop with Mobile P4 H-T, ATI Radeon Mobile RS300M AGP 9100IGP, KDE 3.5, Sid, kernel 2.6.15-1-686-smp.

How do I enable the render acceleration on my card? I wish to use the Translucency effects offered by KDE. Doing so currently makes every thing un-usably slow.

In addition, how can a card be both AGP and IGP? This comes from KInfoCentre.

Thank you kindly in advance.

Some relevant bits from xorg.conf:

Section "Module"
    Load    "bitmap"
    Load    "dbe"
    Load    "ddc"
    Load    "dri"
    Load    "evdev"
    Load    "extmod"
    Load    "freetype"
    Load    "glx"
    Load    "int10"
    Load    "record"
    Load    "type1"
    Load    "v4l"
    Load    "vbe"
EndSection

Section "Device"
    Identifier    "ATI MOBILITY RADEON 9000 IGP"
    Driver        "ati"
EndSection

Section "DRI"
    Mode    0666
EndSection

Section "Extensions"
Option "Composite" "Enable"
EndSection

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