After the recent update, I can confirm that bumblee broke for me as well. I had the same plymouth goes to black screen problem.
As a shot in the dark *(and me not trusting my installation), I removed bbswitch and all nvidia related packages, and then installed nvidia-346. The 3.13.0-62 kernel now boots fine with the new driver. I did however notice that this new driver does not build against the newer kernels. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1465706 Title: SRU: New upstream releases of nvidia for 14.04.3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-304/+bug/1465706/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs