SUMMARY https://www.reddit.com/r/kdeneon/comments/j82fgk/kde_neon_latest_update_as_of_today_broke_my/ Okay so I can't post screenshots or anything, I have a bare firefox window with no decorations, plasma or desktop or anything whatsoever. I can't even move windows. Basically, today Discover showed up some updates for KDE apps (as usual), I hit update, all good. Then I decide to reboot the computer and boom. I get the spinning logo where it says "Plasma made by KDE" and it stays there. I have mouse cursor, but only a black background. Running "krunner" doesn't work. Creating a new user didn't work, same result. I can't even logout from it (I could logout from my normal user) so the issue isn't my user/home dir, but the system. I can run ksysguard, but no window decorations, ALT+drag, nada. I can logout, the login manager appears, I can pick either X11 or Wayland. X11 goes through, Wayland just gets me back to the login manager. Any help is greatly welcome, I'm stuck with a faulty system now :( Edit: I was able to go to the console and install openbox and have a rudimentary taskbar with tint2. Plasma is broken though, this feels so 2000... STEPS TO REPRODUCE 1. Update your packages as of today. Discover showed up a bunch of updates for KDE apps 2. Reboot 3. Boom. OBSERVED RESULT Black screen. Can work around it by using ALT+Space to launch other shells (I ran openbox and tint2). Rebooting doesn't work at all. EXPECTED RESULT My normal desktop, I need to work! SOFTWARE/OS VERSIONS Windows: Not relevant macOS: Not relevant Linux/KDE Plasma: 5.19.5 ? Latest as of today (available in About System) KDE Plasma Version: ??? KDE Frameworks Version: ??? Qt Version: ??? ADDITIONAL INFORMATION
Running kquitapp5 plasmashell kstart5 plasmashell Makes it work, but no window decorations, I'm stuck with openbox now.
I can confirm this issue: After login only get a black screen and maouse cursor. Can run some app with ALT+F2 search bar but wihtout window manager if execute ''' cat ~/.xsession-errors | tail kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/libexec/kf5/klauncher' kdeinit5: Launched KLauncher, pid = 1250, result = 0 kdeinit5: opened connection to :0 kdeinit5: Got SETENV 'XCURSOR_THEME=Breeze_Snow' from launcher. kdeinit5: Got SETENV 'XCURSOR_SIZE=24' from launcher. kdeinit5: Got SETENV 'GTK_RC_FILES=/etc/gtk/gtkrc:/home/horacio/.gtkrc:/home/horacio/.config/gtkrc' from launcher. kdeinit5: Got SETENV 'GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:/home/horacio/.gtkrc-2.0:/home/horacio/.config/gtkrc-2.0' from launcher. /usr/bin/kwin_x11: symbol lookup error: /lib/x86_64-linux-gnu/libkwin.so.5: undefined symbol: _ZN14KWaylandServer17XdgShellInterface14surfaceCreatedEPNS_24XdgShellSurfaceInterfaceE kdeinit5: Got EXEC_NEW '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/file.so' from launcher. kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/file.so' '''
So far I only find this. *Log in kde *only get a black screen * ALT + F2 * type "Konsole" * in konsole execute "kwin" * it returns: kwin: symbol lookup error: /lib/x86_64-linux-gnu/libkwin.so.5: undefined symbol: _ZN14KWaylandServer17XdgShellInterface14surfaceCreatedEPNS_24XdgShellSurfaceInterfaceE Thanks!!
*** This bug has been marked as a duplicate of bug 427498 ***