https://bugs.kde.org/show_bug.cgi?id=372789
--- Comment #21 from Rainer Finke <m...@rainer-finke.de> --- Actually I assume the black screen is related to the following line in the logs: sddm-greeter[609]: The X11 connection broke: I/O error (code 1) Maybe when I logout of Plasma-Wayland it does kill all X11 applications. And SDDM is one of them. So this makes me think that as long as there is no XWayland running on Plasma-Wayland I can logout succesful. Strange thing is that as soon as I open a application like Kate or Konsole, the system will freeze with the black screen on logout. Maybe some application still open some X calls that we don't know yet and then XWayland is running in the background, but I'm not a developer. Anyway Xwayland applications will be around for a long time, so Plasma-Wayland should exit anyway without this issue. I can still SSH to the machine where Plasma-Wayland/SDDM failed with the black scren. Stopping SDDM will show the console on the screen. But input with the keyboard doesn't work. It seems like it is still locked somehow. Plasma 5.11.1 KDE Frameworks 5.39 Qt 5.10 beta SDDM 0.16 Arch Linux -- You are receiving this mail because: You are watching all bug changes.