Two users logged in. Plugged in USB drive, had to switch to the other user (it gets the 'mount' dialogue first for some unexplained reason), cancelled mount there, switched back to mount in the right user..
.. display never appeared. I was able to ssh in and save the end of syslog, attached. ** Attachment added: "switch crash syslog.log" https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-435/+bug/1852939/+attachment/5313629/+files/switch%20crash%20syslog.log -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-435 in Ubuntu. https://bugs.launchpad.net/bugs/1852939 Title: Display fails to restore after Power Management prefs turn it off Status in nvidia-graphics-drivers-435 package in Ubuntu: Confirmed Bug description: 1. Have Power Management preferences 'Put display to sleep when inactive for..' to something other than 'never'. 2. Leave computer for longer than that. 3. Come back to find computer still running, but display will not resume after pressing a key / moving the mouse. Possibly related to playing video (see https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics- drivers-435/+bug/1852570) because it doesn't happen every time, but has happened at least four times since upgrading to Ubuntu MATE 19.10 with this version of the graphics driver. On the most recent occasion, syslog contains numerous lines like: Nov 17 18:42:11 example org.mate.panel.applet.MateMenuAppletFactory[1267]: [2737:2737:1117/184211.847879:ERROR:gles2_cmd_decoder.cc(5755)] GLES2DecoderImpl::ResizeOffscreenFramebuffer failed because offscreen FBO was incomplete. Nov 17 18:42:11 example org.mate.panel.applet.MateMenuAppletFactory[1267]: [2737:2737:1117/184211.860750:ERROR:gles2_cmd_decoder.cc(3962)] ContextResult::kFatalFailure: Could not allocate offscreen buffer storage. .. repeated 'many' to 'several' times a second until I ssh'd in and restarted it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-435/+bug/1852939/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp