I tried the modeset change first, as that one we'd presumably prefer to be true anyway one day, whereas giving stuff root that isn't supposed to have root never feels right. :-)
It worked. I left it to display sleep for a couple of minutes and on wake I came right back to the desktop. (I don't have screen lock on, so no password needed.) In case the length of sleep makes a difference (don't know why it should) I'll leave it to cut in normally when I go out for a couple of hours shortly, and see what happens when I get back. NB: I had tried enabling this before as part of forcing nvidia to use wayland. I disabled it because (in Wayland) it was terribly sluggish and in the logs I was seeing nvidia_drm panic and presumably relaunch almost continuously, on the 4.13 kernel. Nouveau was also failing on that kernel, even worse, giving just a black screen. That was when I decided to try harder to have a working Xorg system again. :-) But I hadn't tried turning modeset on and still use xorg; I didn't know there was a point in doing so. It seems to be happy. BTW FWIW rachel@fleetfoot:~$ apt-cache policy nvidia-384 nvidia-384: Installed: 384.90-0ubuntu0~gpu17.10.1 Candidate: 384.90-0ubuntu0~gpu17.10.1 Version table: *** 384.90-0ubuntu0~gpu17.10.1 500 500 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu artful/main amd64 Packages 100 /var/lib/dpkg/status -- 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/1720149 Title: gnome-shell segv on wake from display or system sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1720149/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs