As the reporter of the duplicate bug 1799787, I thought that I would see if I could reproduce this problem with the latest disco daily (20181205). Unfortunately I can by taking the following steps:
1. Boot to live session 2. Make external monitor the primary display and the laptop's internal monitor the secondary display 3. Install GNOME Tweaks 4. Enable 4 static workspaces 5. Enable workspaces span displays 6. Move to workspace 4 7. Open Firefox 8. Restart GNOME Shell with Alt F2 and enter Both displays went blank and I was returned to the log in screen just as per my original report. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1796607 Title: gnome-shell crashed with SIGSEGV in meta_compositor_switch_workspace(compositor=NULL) → meta_workspace_activate_with_focus → meta_workspace_activate → meta_x11_display_new → meta_display_open To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1796607/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs