Upgraded to the latest standard Karmic kernel, along with various other updates (but none for xserver-xorg-video-intel, I noticed). The laptop locked up after about 10 minutes or so, that is, without acpi=off in the Grub kernel command line.
-- [i855] Xserver freezing on Toshiba Satellite A10 (Intel 82852/855GM) https://bugs.launchpad.net/bugs/477256 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs