Ubuntu
gdm3 package

  1. Bug #1802574
  2. Comment #6

Comment 6 for bug 1802574

Revision history for this message
David Baker (davidb1) wrote :

Was there ever a resolution to this. I am having much the same problem using my Dell Latitude 7480 running Ubuntu 18.04.2 LTS. In my case the behaviour that causes problems is that I have the laptop docked and suspend it - and then undock the laptop. When I attempt to restart the laptop (undocked) I get the same behaviour reported by the OP - i.e. laptop starts up and screen backlight comes on, but nothing is ever displayed. I can switch to a virtual console and use that normally including rebooting. There is nothing in /var/crash or on http://errors.ubuntu.com/ . I have tried killing a range of X related processes to see if I could get the GUI to restart - but without success.

My guess would be that the system isn't coping with the dock (with 2 external monitors) being removed while it is suspended.

Let me know if any further system details would be useful.