No login screen after interrupting sleep

Support KDE Plasma
1

When my screen goes dark after 5 minutes of inactivity and I instantly move my mouse (or press any key) to prevent it from locking, I see only sddm wallpaper (with current time) but no login screen. How can I get my login screen back to resume my KDE plasma session?
If I don’t instantly interrupt screen locking (not sure if it’s actually “locking” or “sleeping” or sth else) and move the mouse a bit later (I guess after it is fully locked) then login screen is properly displayed and I can resume GUI session.

What I tried so far:

  • switching to terminal (ctrl+alt+f3) and restarting sddm with:
    systemctl restart sddm
    it showed me sddm with login dialog, but after trying to login I got error “startkde: could not start plasma session”
  • ctrl+alt+backspace, to kill all xorg processes - it gets me to sddm login, but when I login I get the same error in dialog box: “startkde: could not start plasma session”. But I would like to avoid killing all processes and losing unsaved data.

Thank you in advance for any help.

– EDIT – some addition info:

kernel logs
sddm logs
plasmashell logs

Maybe this has something to do with it:

lip 04 11:21:45 mylap sddm[549245]: Authentication error: SDDM::Auth::ERROR_INTERNAL "Process crashed"
lip 04 11:21:45 mylap sddm[549245]: Auth: sddm-helper (--socket /tmp/sddm-auth-72039a61-2cb5-4469-a7a6-96b20f36a263 --id 1 --start /usr/bin/startplasma-x11 --user kossak) crashed (exit code 1)
lip 04 11:21:45 mylap sddm[549245]: Authentication error: SDDM::Auth::ERROR_INTERNAL "Process crashed"

kscreenlocker logs:

lip 04 09:04:57 mylap kscreenlocker_greet[16447]: qt.virtualkeyboard.hunspell: Hunspell dictionary is missing for "en_US". Search paths QList("/usr/share/qt6/qtvirtualkeyboard/hunspell", "/usr/share/hunspell", "/usr/share/myspell/dicts")
lip 04 10:24:46 mylap kscreenlocker_greet[245939]: qt.virtualkeyboard.hunspell: Hunspell dictionary is missing for "en_US". Search paths QList("/usr/share/qt6/qtvirtualkeyboard/hunspell", "/usr/share/hunspell", "/usr/share/myspell/dicts")
lip 04 11:08:02 mylap kscreenlocker_greet[462758]: qt.virtualkeyboard.hunspell: Hunspell dictionary is missing for "en_US". Search paths QList("/usr/share/qt6/qtvirtualkeyboard/hunspell", "/usr/share/hunspell", "/usr/share/myspell/dicts")
lip 04 11:21:59 mylap systemd[884]: plasma-ksmserver.service: Killing process 462758 (kscreenlocker_g) with signal SIGKILL.
2

Please tell us what are the error messages in journactl.

I had the same issue yesterday, right after the update (testing branch, X11), installing hunspell-en_us package solved the problem surprisingly.

3

I added logs to my first post.

4

That’s not sddm but kscreenlocker. They look the same, but they are two very different pieces of software.

That’s the wrong command. Use systemctl instead.

5

Sorry for the mistake, it was systemctl (there’s no such command as systemd :)).
I added some logs to my first post, including plasmashell logs, which also has a bunch of errors.

6

some logs for kscreenlocker:

lip 04 09:04:57 mylap kscreenlocker_greet[16447]: qt.virtualkeyboard.hunspell: Hunspell dictionary is missing for "en_US". Search paths QList("/usr/share/qt6/qtvirtualkeyboard/hunspell", "/usr/share/hunspell", "/usr/share/myspell/dicts")
lip 04 10:24:46 mylap kscreenlocker_greet[245939]: qt.virtualkeyboard.hunspell: Hunspell dictionary is missing for "en_US". Search paths QList("/usr/share/qt6/qtvirtualkeyboard/hunspell", "/usr/share/hunspell", "/usr/share/myspell/dicts")
lip 04 11:08:02 mylap kscreenlocker_greet[462758]: qt.virtualkeyboard.hunspell: Hunspell dictionary is missing for "en_US". Search paths QList("/usr/share/qt6/qtvirtualkeyboard/hunspell", "/usr/share/hunspell", "/usr/share/myspell/dicts")
lip 04 11:21:59 mylap systemd[884]: plasma-ksmserver.service: Killing process 462758 (kscreenlocker_g) with signal SIGKILL.

Maybe I do try to install this hunspell dictionary hunspell-en_us and see if it helps…

7

Did you read my first message ??? :face_with_raised_eyebrow:

8

Yes I provided logs in first message. Also I just installed hunspell-en_us. Anything i missed? :slight_smile:

9

No, i do not think so, just reboot and see what happens.

I also updated my plasma theme because i had lot of warning messages in logs

10

I also updated Manjaro to latest version, but all this didn’t help, unfortunately.

But I found workaround, thx to @Aragorn pointing it is not sddm, but screenlocker. When it happened again, I just killed kscreenlocker_greet process using terminal:
sudo kill -9 <PID_OF_SCREENLOCKER>
and got my plasma GUI session back properly :slight_smile:

11

Crashes like that can happen due to an incompatible theme, or the remnants of such in your home directory.

12

Probably yes, yesterday i updated (in fact i deleted and reinstalled them) all my windows11-**** themes because of incompatibility warnings in journalctl

13

A similar-sounding bug was reported to KDE and a fix was included in KDE Plasma 6.1.1.

3 Likes
14

And now it works. I have no idea why - last thing I did was just killing the screenlocker process, which helped only once, because the next lock happened again in 5 minutes, and this time there wasn’t any screenlocker process to kill, so I rebooted. Now I tried it twice, before and after reboot, and the problem is gone.
So thank you everyone for help!