Kscreenlocker "Standby" button tries to sign in with incorrect password - seems to be a PAM authentication error

I’m using Arch Linux, KDE, Wayland on a Lenovo Thinkpad. This happens when I’m on the Kscreenlocker screen (not the SDDM screen), whether because I just woke up the computer, or I pushed Super+L.

If I push the software “Sleep” button, I get the “Unlocking failed” text above the password entry and the screen shakes like I put the wrong password in. After the shaking settles, then it goes to sleep.

Not a dealbreaker, I’ve never had any other issue logging in with Kscreenlocker, but I was wondering if there’s a way to fix that. There’s no /etc/pam.d/kscreegreeter config file I can find. My journalctl has:

Feb 16 23:13:42 kscreenlocker_greet[88142]: pam_unix(kde:auth): unexpected response from failed conversation function
Feb 16 23:13:42 kscreenlocker_greet[88142]: pam_unix(kde:auth): conversation failed
Feb 16 23:13:42 kscreenlocker_greet[88142]: pam_unix(kde:auth): auth could not identify password for []
Feb 16 23:13:51 kscreenlocker_greet[88142]: pam_unix(kde:auth): unexpected response from failed conversation function
Feb 16 23:13:51 kscreenlocker_greet[88142]: pam_unix(kde:auth): conversation failed
Feb 16 23:13:51 kscreenlocker_greet[88142]: pam_unix(kde:auth): auth could not identify password for []
Feb 16 23:13:58 kscreenlocker_greet[88142]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000)
Feb 16 23:13:58 kscreenlocker_greet[88142]: Failed to write to the pipe: Bad file descriptor.

From when I just did it a few days ago a couple of time.

Hi! For what it’s worth, the issue you’re describing has been confirmed as a bug through the KDE Bugtracking System: 481808 – Clicking "Sleep" on the lockscreen makes it also display a failed login attempt

If you’d like, you can add yourself to the CC list in Bugzilla to get email notifications whenever new comments are added or the status is changed :slight_smile:

That CC list checkbox is located here - making sure that’s checked, then choosing “Save Changes” will add you:

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Excellent, thank you!

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