That happened to me when I upgraded from 13.10 to 14.04 stable. But no solution worked for me.. It's very serious as I couldn't work now.
I tried to use nvidia 331 drivers, prime select nvidia and Intel, purge all nvidia drivers, startx... But always all black except terminal. I readed all similar bugs out there but almost all are dated from January and February.. I writing this from my smartphone after 2 days fighting... I have a laptop with a nvidia 765gtx. The previous kubuntu worked almost fine with the 319 driver (I also tried to use that driver). I never installed a nvidia driver out of official repos -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274822 Title: latest update breaks nvidia-prime and produces blank screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1274822/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs