I may have forgotten to mention that installed extensions (even if disabled) can still cause bugs.
Please try uninstalling all of these: 'hams...@projecthamster.wordpress.com' 'nohotcor...@azuri.free.fr' 'screenshot-window-si...@gnome-shell-extensions.gcampax.github.com' 'switc...@landau.fi' 'user-th...@gnome-shell-extensions.gcampax.github.com' 'windowoverlay-ic...@sustmidown.centrum.cz' 'windowsnaviga...@gnome-shell-extensions.gcampax.github.com' 'launch-new-insta...@gnome-shell-extensions.gcampax.github.com' 'redsh...@tommie-lie.de' 'cont...@projecthamster.org' 'windowIsReady_Remover@nunofarr...@gmail.com' 'window-search-provi...@quelltexter.org' 'topIcons@adel.gadl...@gmail.com' 'alternate-...@gnome-shell-extensions.gcampax.github.com' 'poweralt...@devpower.org' Or more simply you can try live booting: http://releases.ubuntu.com/18.04.1/ubuntu-18.04.1-desktop-amd64.iso and tell us if that has the same bug. ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1812373 Title: Desktop is not restored correctly after screen saver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1812373/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs