Sounds vaguely similar to bug #914216, except that's different graphics hardware. Still, might be worth checking if you also have a vt-d option in BIOS and see if disabling it helps.
But first I'd like to see your `ps aux` output. This could just be a simple process resource issue. ** Summary changed: - Ubuntu sometimes stutters in that the mouse will briefly stop moving, sometimes the screen will lock up completely. + [gm45] Ubuntu sometimes stutters in that the mouse will briefly stop moving, sometimes the screen will lock up completely. ** Package changed: xorg (Ubuntu) => xserver-xorg-video-intel (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/916763 Title: [gm45] Ubuntu sometimes stutters in that the mouse will briefly stop moving, sometimes the screen will lock up completely. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/916763/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
