I am happy to report that for the last several weeks this bug seems to be fixed. It appears to coincide with either linux-firmware 1.60 (possibly 1.59, since I went from 1.58 straight to 1.60) or linux 3.0.0-9.13 (or 3.0.0-9.12). I did updates around 2011-08-23 and found this bug is no longer a problem. I have done a lot of testing including the test case in the description along with a lot of VM use and updates in general. Marking Oneiric as 'Fix Released', but will re-open if this comes up again.
** Changed in: linux (Ubuntu Oneiric) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in Ubuntu. https://bugs.launchpad.net/bugs/694029 Title: kvm guests become unstable after a while To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/694029/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs