https://bugs.kde.org/show_bug.cgi?id=514444
Bug ID: 514444
Summary: Fingerprint unlock gets stuck until nudged by another
request
Classification: Plasma
Product: plasmashell
Version First master
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Screen locking
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: 1.0
SUMMARY
I set up fingerprint auth through fprint. When I lock the screen, it asks me to
"place finger on reader". I do that. Nothing happens. Only when I then enter
_any_ password (or just hit return with empty password) it gets unstuck and
realizes "oh rigthy, the finger was already correct, unlocking"
STEPS TO REPRODUCE
1. Set up fingerprint auth through fprint
2. Lock screen
3. Place finger once prompted
OBSERVED RESULT
Nothing happens until I hit return or enter any password
EXPECTED RESULT
It unlocks
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: git master as of 2026-01-10
Qt Version: 6.10.1
ADDITIONAL INFORMATION
Seems the pam request waits for some signal indefinitely that never arrives and
only doing another request nudges it to realize it’s already completed. I do
not get the infamous “Unlock” button, it just sits there doing nothing until I
trigger another auth request.
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