It is a highly likely that this is a similar issue to that we saw with Intel. That the driver is not expecting the card to be configured, and getting into a mess trying to program it from that state. As these are the proprietry drivers and we cannot debug them, it seems appropriate to unconditionally disable pretty boot when they are installed.
** Also affects: grub2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/686070 Title: black screen (no more gdm/X server) with nvidia propriatery after gfxpayload=keep activation -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs