No joy with XComposite extension on Gutsy on Thinkbook X60

[Dan Kegel]

Sorry, here's a little brain dump before I go to bed.

I'm running updated Gutsy beta on a Thinkbook X60, and
am testing out wine from git on Google Earth.
Initially it aborted on startup with
X Error of failed request:  BadValue (integer parameter out of range
for operation)
  Major opcode of failed request:  145 (XFree86-DRI)
The log also showed it couldn't find the XComposite extension,
and sure enough, config.log showed configure hadn't found it.
I think I fixed this with
   sudo apt-get install libxcomposite-dev
and reconfiguring and rebuilding Wine.  But now when I start
Google Earth, it aborts with
DRM_I830_CMDBUFFER: -22
According to
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=394311
this is "libgl1-mesa-dri: i965_dri.so miscompiled with current gcc".
A patch was attached there:
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=30;bug=394311
The bug's been reported to Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/66645

Any clues?
- Dan