Hi there,

I have just installed Fedora 32's KDE spin (Plasma 5.18.5). Everything went smoothly, but I'm experiencing a significant issue: When I try to logout the system gets stuck on a black screen with the KDE desktop's mouse cursor still working and I need to reboot (I have 'only' waited about 2minutes so far, though).

This did not appear immediately but after a couple of reboots.

On the other hand, if I run:

Code: Select all

loginctl terminate-user <myusername>

in konsole I get back to the login screen almost instantly.

If I do the following (which may be what logging out via the GUI does) to logout the issue appears:

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qdbus org.kde.ksmserver /KSMServer logout 0 0 0

Has anyone experienced this and/or know how to go about it?

Cheers.

Update:

I have re-installed using the Workstation spin, which uses GDM instead of SDDM by default and everything works fine.

I have then tried to switch from GDM to SDDM and I immediately encountered the issue, which disappeared when I switched back to GDM.

So I would say that there is an issue with SDDM itself or when used with Plasma 5.18.5.
(which is a shame because GDM's login screen is fugly compared to SDDM's)

I have exactly the same problem. Fedora 33 KDE. I log out, a blank (black) screen appears with only the mouse cursor and that's it.

EDIT: I think I found a solution: reinstalling SDDM.

$ dnf remove sddm

After uninstalling the display manager, everything must be done in the console:

Connect to the WiFi network using the command (optional, if you are using WiFi):
$ nmcli connection {will display the names of the saved networks}
$ nmcli connection up 'your_wifi_name' --ask

$ dnf install sddm
$ reboot

teth wrote:I have exactly the same problem. Fedora 33 KDE. I log out, a blank (black) screen appears with only the mouse cursor and that's it.

EDIT: I think I found a solution: reinstalling SDDM.

$ dnf remove sddm

After uninstalling the display manager, everything must be done in the console:

Connect to the WiFi network using the command (optional, if you are using WiFi):
$ nmcli connection {will display the names of the saved networks}
$ nmcli connection up 'your_wifi_name' --ask

$ dnf install sddm
$ reboot

This didn't work for me, also in Fedora 33 Plasma Spin. Altough it is prompt to me a "kde wallet" password and background image is active (no black screen). Gonna try out GDM or another DM.

EDIT:

Find out that SDDM start before video driver at bbs.archlinux. So added a sleep time before it launch at

/usr/lib/systemd/system/sddm.service

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[Service]
ExecStartPre=/usr/bin/sleep 4
ExecStart=/usr/bin/sddm


Wich worked (4 seconds) for me but apparently it has now issues in wifi credentials, tough kde wallet seems to be launched but not working (without asking pass).

Only to add I have this issue since fedora 31 but just today was my limit.

EDIT 2:

No problem with KDE Wallet but NetworkManager, restarting regrab credentials:

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sudo systemctl restart NetworkManager.service