I'm not sure if it's related, but I'm also seeing that on a T520, I'm *consistently* unable to boot with discrete graphics enabled. Either Integrated or Optimus boots fine.
Screenshot: http://i.stack.imgur.com/auxZP.jpg And related StackExchange: http://askubuntu.com/questions/245886/why-is- ubuntu-unable-to-mount-my-hard-drive-when-i-use-nvidia-discrete-graphics -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1083738 Title: Booting Trouble With Lenovo T520 (NVS 4200M) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1083738/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs