SUMMARY When I click switch user in session to change user but log back into the same account, I get a blank screen and the UI does not load. STEPS TO REPRODUCE 1. Log into machine/VM with account "x" 2. Switch user to log in with a different account through login screen. 3. Log back into machine/VM with account "x" OBSERVED RESULT It looks like the system tries to actually create another session. I have to wait a few seconds and then am presented with a blank screen. The mouse cursor is active but click actions do not yield any results (including context menus). EXPECTED RESULT The machine should simply unlock the computer for user "x" and take the user back to the session that was logged into originally. In effect, in this scenario, the login screen is expected to act as a screen lock. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu 20.04 x64 KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 Kernel version: 5.4.0.47-generic ADDITIONAL INFORMATION Using SSDM from https://store.kde.org/p/1312658/
Reassigning to plasmashell for a start, but it seems this could be an SDDM issue.
> It looks like the system tries to actually create another session. Yeah, it probably is. However SDDM supports re-logging-in to the existing session, and in fact does it by default if you have a relatively recent version. See https://github.com/sddm/sddm/blob/develop/src/common/Configuration.h#L94 If this is isn't happening in Kubuntu, it's a distro bug for either not using a recent enough version of SDDM, or not explicitly adding ReuseSession=True to the config file to trigger that behavior in the old version. See https://phabricator.kde.org/T9034
Thank you Nicolas and Nate. It is indeed happening in Kubuntu focal fossa. So, it is a distro bug. OK. I'll see if I can raise it as an issue on a Kubuntu related tracker and reference your comments. T