For the record, I have a Lenovo P50 running Ubuntu MATE (which uses lightdm), also in am Ultradock. It is running in "Discrete" (NVIDIA) mode using nvidia-396 from the graphics-driver ppa, and had been working well since at least -34.
When I upgraded to -38 (from -36), the system comes up to the greeter screen in a low resolution, and though it works, when I log in, the low resolution remains. When I boot to -36 again, same problem, but if I boot to -34, strangely, it works. When I compare the xorg.log between a "good" boot (in -34) and a "bad" boot (in -38), I can see that in the "bad" boot, it's just not finding any nvidia drivers, while in the "good" boot it is. I've been booting to -34 as a workaround, but I suspect this is the same problem as is described by the OP, and if there's anything I can do to help, please let me know. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799994 Title: Xorg loads, no display on nvidia 390.77-0ubuntu0.18.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1799994/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
