Public bug reported: Click the user menu (top right) and choose either the Lock icon or $username -> Switch User.
I expected to be sent to a lock screen (possibly via a blanked screen or a screensaver - I don't know what normal behaviour is for Ubuntu 19.04). What happened was most of the Gnome shell was left up on screen, including all my apps that were running, along with the user menu with greyed-out Lock button. If I click the menu again, I get the cut-down version I would expect from GDM with only the option to alter volume and network connections. If I click the top bar again, I get a sort of shimmering version of the cut-down user menu superimposed on the original full version of the user menu that never went away. The favourites icon on the left dock are also clickable and hoverable, but they don't actually do anything and any tooltips are left imprinted on the screen. I can unlock the screen again by manually pressing Ctrl-Alt-F1 to return me to the original GDM login screen, clicking my user picture and entering my password. I have an unlisted youtube video of most of this behaviour, except there's no recording of me switching to VT1 to unlock again (the recorded screen goes blank for that part). https://www.youtube.com/watch?v=JjocsxBLUpE My assignment of 'gnome-shell' is a guess. As far as I know it could be related to gdm3, the X intel driver, X itself or even the kernel, or some nasty interaction between those. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: gnome-shell 3.30.1-2ubuntu1.18.10.1 ProcVersionSignature: Ubuntu 4.18.0-12.13-generic 4.18.17 Uname: Linux 4.18.0-12-generic x86_64 ApportVersion: 2.20.10-0ubuntu13.1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Dec 19 13:27:31 2018 DisplayManager: gdm3 GsettingsChanges: b'org.gnome.shell' b'enabled-extensions' b"['gsconn...@andyholmes.github.io']" b'org.gnome.shell' b'command-history' redacted by apport b'org.gnome.shell' b'favorite-apps' redacted by apport b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" InstallationDate: Installed on 2018-12-19 (0 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic -- 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/1809117 Title: Screen corruption on "Lock Screen" or "Switch User" command To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1809117/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
