Confirmed in Ubuntu 23.04. The issue happens on my external monitor (2560x1440@60Hz) set as primary monitor and located above the laptop's internal FullHD display (both physically and virtually). Background with no elements on it is only displayed on my secondary monitor (laptop screen when external monitor is plugged in) when lock screen is displayed. If I unplug the external monitor, lock screen is correctly displayed on my internal laptop screen, together with the background.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2013042 Title: Lock screen wallpaper vanishes (goes black) if a second monitor is plugged in/out Status in GNOME Shell: New Status in gnome-shell package in Ubuntu: Triaged Bug description: Lock screen's blurry wallpaper vanishes on the primary monitor if a second monitor is plugged in/out. I'm left with just the lock screen text on a black background. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/2013042/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
