The issue here seems to stem from the Nvidia drivers. I'm reassigning this to the nvidia-graphics-drivers package for better visibility.
Also, just as an added note, I'm not familiar with any kernels being provided from the PPA you noted (ppa:upubuntu-com/kernel-amd64). ** Package changed: linux (Ubuntu) => nvidia-graphics-drivers (Ubuntu) ** Changed in: nvidia-graphics-drivers (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/1033263 Title: Ubuntu 12.04 freezes with nividia drivers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1033263/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp