Comment 521 for bug 359392

Just to add my own input and a few other things:

I've done two of the things suggested here that appear to have solved this problem for me. I don't know if either of them alone would have done it, since I made both changes at once. Basically, I upped my "Virtual" size to 2048 2048, and I applied Albert Damen's debdiff patch. Prior to making these changes, I suffered from the same X freezes that others have described: no CTRL+ALT+F1 to switch to a TTY, no responsiveness in X to mouse clicks or keyboard input (except for ALT+SysRq+REISUB and ALT+SysRq+K, the latter of which killed at least part of the X session but left me with an unreadable screen), but ability to move the mouse pointer. I appear to suffer from no such problems now (so far, anyway, after hours of usage under the same conditions which typically would've caused the freezing by now). I can view the panorama image provided above, and so on.

Here's the relevant portion of 'lspci -vvnn' and 'apt-show-versions -a -p xserver-xorg-video-intel' (I've attached my xorg.conf for reference as well):

$ lspci -vvnn
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 03)
 Subsystem: Hewlett-Packard Company Device [103c:30d9]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0
 Interrupt: pin A routed to IRQ 2301
 Region 0: Memory at 51000000 (64-bit, non-prefetchable) [size=1M]
 Region 2: Memory at 40000000 (64-bit, prefetchable) [size=256M]
 Region 4: I/O ports at 30d0 [size=8]
 Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+
  Address: fee0300c Data: 4199
 Capabilities: [d0] Power Management version 3
  Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=0 PME-
  Bridge: PM- B3+
 Kernel modules: intelfb

$ apt-show-versions -a -p xserver-xorg-video-intel
xserver-xorg-video-intel 2:2.6.3-0ubuntu9aperture1 install ok installed
xserver-xorg-video-intel 2:2.6.3-0ubuntu9 jaunty us.archive.ubuntu.com
xserver-xorg-video-intel 2:2.6.3-0ubuntu9 jaunty archive.ubuntu.com
xserver-xorg-video-intel 2:2.6.3-0ubuntu9aperture1 newer than version in archive

Incidentally, I previously saw (and posted on) a bug apparently similar (if not identical to) this one at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/355155