This happened to me with too on my laptop.
I assume this happens to all those people who have this Intel card and
have touched their xorg.conf. In my case it was altered automatically by
Ubuntu when using my external monitor, because the screen resolution
widget wrote stuff in xorg.conf.
If
** Changed in: xorg-server (Ubuntu)
Status: New = Invalid
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[Jaunty] No more 3D acceleration with Intel 915GM/GMS/910GML Express Graphics
Controller
https://bugs.launchpad.net/bugs/346741
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Fixed with a sudo dpkg-reconfigure xserver-xorg.
Annoying that such a thing happened in the first place.
--
[Jaunty] No more 3D acceleration with Intel 915GM/GMS/910GML Express Graphics
Controller
https://bugs.launchpad.net/bugs/346741
You received this bug notification because you are a member
** Attachment added: Xorg.0.log
http://launchpadlibrarian.net/24207592/Xorg.0.log
--
[Jaunty] No more 3D acceleration with Intel 915GM/GMS/910GML Express Graphics
Controller
https://bugs.launchpad.net/bugs/346741
You received this bug notification because you are a member of Ubuntu
Bugs,