I've had the same problems with Ubuntu 12.04 as well as Kubuntu 12.04. Screen would randomly freeze, particularly while watching a video. Pointer completely unable to move, and if audio is playing, it skips like a scratched record. At first I thought it might have been instability with the newest version of KDE, but when it happened with mainline Ubuntu, I realized that it was most likely the kernel.
Using a Dell Latitude D620, onboard Intel graphics, Intel Core 2 processor, 3 GB RAM, onboard Sigmatel sound. -- 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 64bit 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