Kscreenlocker freezes and have to be killed

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1

I am having this problem in my (old) system since the upgrade to Leap 15.5. The screen lock freezes and I am unable to type anything. The mouse works, with the pointer visible and moving, but I cannot click anything and even the blinking cursor in the password box is frozen.
The unlock-session(s) in a terminal does not work. Killing the process kscreenlocker_g with only “kill ####” does not work and I have to do it with -9 (“kill -9 ####”). Then the process respawn and I am able to enter the password again.

The only messages I got related to the locker are these:

sudo journalctl | grep kscreenlocker
May 04 08:22:33 XXXX.site kscreenlocker_greet[10383]: Qt: Session management error: networkIdsList argument is NULL
May 04 08:22:34 XXXX.site kscreenlocker_greet[10383]: kf.kirigami: Failed to find a Kirigami platform plugin
May 04 08:22:35 XXXX.site kscreenlocker_greet[10383]: qt.virtualkeyboard.hunspell: Hunspell dictionary is missing for “en_GB” . Search paths (“/usr/share/qt5/qtvirtualkeyboard/hunspell”, “/usr/share/hunspell”, “/usr/share/myspell/dicts”)

Other error message is “gkr-pam: unable to locate daemon control file”, but this does not seems to be related. I have Nomachine running (remote access), but the freezes occurs with the server disabled. I used the “light-locker” a few times, and it seems that the problem did not occur.

Does anyone have any idea why this is happening, or were I can find more information about errors in the system logs? I will be glad to give more information if necessary.

Thank you all.

System info:
Operating System: openSUSE Leap 15.5
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 5.14.21-150500.55.52-default (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-3330 CPU @ 3.00GHz
Memory: 6,7 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 2500
Manufacturer: Gigabyte Technology Co., Ltd.

The theme is Breeze, but the problem persists with the defaults.

2

Not really an idea but I would reinstall kscreenguard

3

Thanks! The problem is how to do it. Reinstall only kscreenguard, not the entire Plasma, KDE or the system.

(it seems that no one have any idea even how to investigate the issue. You are the first to post a response in different foruns…)

4

X or Wayland???

5

X. The Wayland doesn’t even appear as option on the login screen.

6

I would do a “zypper rm kscreenguard” and after that a “zypper in kscreenguard”, when doing also de-install those packages that are suggested by zypper if any.

7

Thank you. The problem is the armagedon warning that it gives:

sudo zypper rm kscreenlocker && zypper in kscreenlocker
[sudo] password for root:
Reading installed packages…
Resolving package dependencies…

The following 16 packages are going to be REMOVED:
kscreenlocker kscreenlocker-lang plasma5-addons plasma5-addons-lang plasma5-defaults-openSUSE plasma5-desktop plasma5-desktop-emojier plasma5-desktop-lang plasma5-session plasma5-theme-openSUSE plasma5-workspace plasma5-workspace-branding-openSUSE plasma5-workspace-lang sddm sddm-branding-openSUSE sddm-theme-openSUSE

16 packages to remove.
After the operation, 90,0 MiB will be freed.

But it seems that eventually I will have to do it (‘kscreenlocker’, not ‘kscreenguard’ as I wrote). I will post the results if I survive…

8

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