Comment 309 for bug 263555

I had the problem on my T60p. It does not appear to use the 915 DRM.

hwinfo --gfxcard
11: PCI 100.0: 0300 VGA compatible controller (VGA)
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_1002_71c4
  Unique ID: VCu0.s+GMGFf+eZ0
  Parent ID: vSkL.rxAOeWuq8i6
  SysFS ID: /devices/pci0000:00/0000:00:01.0/0000:01:00.0
  SysFS BusID: 0000:01:00.0
  Hardware Class: graphics card
  Model: "Lenovo ThinkPad T60p"
  Vendor: pci 0x1002 "ATI Technologies Inc"
  Device: pci 0x71c4 "Mobility FireGL V5200"
  SubVendor: pci 0x17aa "Lenovo"
  SubDevice: pci 0x2007 "ThinkPad T60p"
  Memory Range: 0xd0000000-0xdfffffff (rw,prefetchable)
  I/O Ports: 0x2000-0x2fff (rw)
  Memory Range: 0xee100000-0xee10ffff (rw,non-prefetchable)
  Memory Range: 0xee120000-0xee13ffff (ro,prefetchable,disabled)
  IRQ: 11 (no events)
  I/O Ports: 0x3c0-0x3df (rw)
  Module Alias: "pci:v00001002d000071C4sv000017AAsd00002007bc03sc00i00"
  Driver Info #0:
    XFree86 v4 Server Module: radeonhd
  Config Status: cfg=no, avail=yes, need=no, active=unknown
  Attached to: #27 (PCI bridge)

Primary display adapter: #11