The log in comment #3 kind of looks like the screen was working. Are you sure that was during the black screen? Regardless, please try following the steps in comment #2 again. Please also try installing the official Nvidia driver using the 'Additional Drivers' app.
** Changed in: plymouth (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1908778 Title: black screen after grub menu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1908778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs