Thanks for the suggestions. It's possible that it might be something to do with gnome-screensaver, but it's set to "blank," and if I'm only away for a couple of hours I can usually still unlock the computer (although the response seems a bit sluggish).
I'll give the newer radeonhd driver a try (I should use the version marked for Hardy, right?). I have a deadline for work coming up, but when I have a window of opportunity (hopefully later in the week) I'll test-drive Jaunty as well. -- [hardy] xorg crashes nightly; SIGSEGV in pixman-image.c https://bugs.launchpad.net/bugs/344957 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