Total lock up here too. But happens sometimes during boot too ! I don't even have the time to access login screen. So I went back to 11.10.
I have tried 12.04 with update from 11.10, clean install, live on CD and USB key. Tried with Nouveau driver, with Nvidia driver. Tried Unity, Gnome Shell, Unity 2D... everything froze. Core i7-720QM (Sandy Bridge) Nvidia GTS 250M (GT215) Toshiba Qosmio X-500 -- 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
