I just upgraded my Acer Aspire V3-771G with Nvidia GeForce GT630M to 16.04 from 15.10. What I found was the following:
1. If booting with the splash quiet options in GRUB you will get "A start job is running for Hold until boot process finishes up ( 1s / no limit)" on all tty's. Without these parameters in GRUB, you have access to tty1-7 again, which allows for a little more debugging. 2. With the splash and quiet options in GRUB both tty 1 and tty 7 show a black screen. Without these options only tty7 is affected. 3. Removing all nvidia packages with sudo apt-get remove --purge nvidia* and then rebooting works (here I am typing this :) 4. nvidia-340, -346, -352 & -361 always renders a black screen for me. I did not try -331 or -331. 5. If you boot without the splash and quiet options in GRUB, run journalctl -f in one tty and then run systemctl restart gdm.service in another tty I get a segfault in gnome-shell "kernel: gnome-shell[3423]: segfault at 14 ip 00007f893e9a4035 sp 00007ffc392b09f0 error 4 in libmutter.so.0.0.0[7f893e96a000+f2000]" I have attached journal output from the time I restarted gdm in a tty which might have some other info. ** Attachment added: "journal-snippet.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559576/+attachment/4652251/+files/journal-snippet.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1559576 Title: Ubuntu GNOME boots to black screen when using proprietary Nvidia drivers on a laptop with Optimus To manage notifications about this bug go to: https://bugs.launchpad.net/gdm/+bug/1559576/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
