Comment 22 for bug 1316035

Adapting Andromalius solution with a simple xorg.conf with

Section "Device"
        Identifier "Matrox Graphics, Inc. MGA G200eR2"
        Driver "vesa"
        Option "OldDmaInit" "True"
EndSection

Brings back a usable system UI-wise on the T320. The graphics card is still unclaimed though:

sudo lshw -C display
  *-display UNCLAIMED
       description: VGA compatible controller
       product: G200eR2
       vendor: Matrox Electronics Systems Ltd.
       physical id: 0
       bus info: pci@0000:06:00.0
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm vga_controller bus_master cap_list
       configuration: latency=64 maxlatency=32 mingnt=16
       resources: memory:d8000000-d8ffffff memory:de7fc000-de7fffff memory:dd800000-ddffffff