More follow-up. Today, before starting my VM, I changed the VM's settings. I selected "Disable acceleration for binary translation" and I deselected "Virtualize Intel VT-x/EPT or AMD-V/RVI."
And good news: no freezes! I've been moving my mouse about the desktop with reckless abandon all day, and there's been nary a hiccup. My initial reaction, though, is that it's pure consequence. Unless, of course, everyone reporting this bug also happens to be running some kind of VM? I doubt that. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 completely freezes frequently To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/993187/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs