I've already got apport configured to report everything (i.e., I've already done the workaround suggested in bug 994921), and there is no crash either in /var/crash or on https://errors.ubuntu.com. I don't think a crash is what's happening here.
Additional data: * If, after I've woken up my laptop and the screen is blank, I put it back in the dock with the lid closed, the dock's two monitors come alive just fine. * If I then open the laptop lid, the monitors reconfigure themselves and I correctly end up with both the two monitors and the laptop screen all live. * Ditto if I then close the lid -- the displays reconfigure themselves and only the two dock monitors are enabled. * If I temporarily disable the udev script that causes the laptop to go to sleep automatically when I undock it, then when I undock it and open the lid the screen comes on just fine. * When the screen is in the off-but-should-be-on state I've reported here, Ctrl-Alt-F* doesn't switch to a different VTY. * This problem happens _almost_ every time I undock, but not every time. I've tried it seven or eight times, and one of those times, the screen came on properly when I woke the laptop by opening the lid. All the other times the screen never came on until I either power-cycled or put the laptop back in the dock. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1802574 Title: laptop screen never comes on after undock / sleep / open of laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1802574/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
