Also experiencing this on a Dell Studio 1558 with AMD RV710 series graphics card and proprietary drivers. I wonder if there's something ACPI related - I'm getting this problem rarely when plugged in, but almost always when on battery power. Doesn't seem to be a problem with radeon open-source driver, but that has its own issues (constant fan, low battery life, etc.)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/991977 Title: Ubuntu 12.04 hangs on shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/991977/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs