I have been facing this problem for a long time now and it still doesn't seem to get fixed. To me it happens most often on multimonitor using HDMI, but also with a single monitor or multimonitor using VGA.
Using a Dell Studio XPS 1340 laptop with: Ubuntu 12.04 Kernel: Linux 3.2.0-57-generic x86_64 GNU/Linux CPU: Intel(R) Core(TM)2 Duo CPU P8700 @ 2.53GHz GPU - NVIDIA SLI: nvidia-smi -L GPU 0: GeForce G210M (UUID: GPU-1b0674e3-9c44-6152-8b35-14ac258e89df) GPU 1: GeForce 9400M G (UUID: GPU-0c72438f-4b81-5d92-cf00-974a003c6fc5) Driver Version: NVIDIA-Linux-x86_64-331.20 - dowloaded from NVIDIA site, but getting the same problem with the ones in the Ubuntu repository I've been losing a lot of time trying to fix it by reinstalling NVIDIA drivers. It caused me to lose a lot of work by freezing my computer randomly. -- 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/linux/+bug/993187/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
