https://bugs.kde.org/show_bug.cgi?id=477326
Bug ID: 477326
Summary: Black screen and cursor for 30 seconds after
cancelling screen locking within the "unlock w/o
password" grace period
Classification: Plasma
Product: kscreenlocker
Version: 5.27.9
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: pos...@posteo.eu
Target Milestone: ---
SUMMARY
My screen stays black for 30 seconds and only shows a working mouse cursor for
30 seconds after cancelling the screen locking within the "unlock w/o password"
grace period.
According to journalctl there is a PAM issue and the 30 seconds correlate
perfectly:
```
13:18:12 kscreenlocker_greet: PAM unable to
dlopen(/usr/lib64/security/pam_console.so): /usr/lib64/security/pam_console.so:
Cannot open the Shared-Object-File
13:18:12 kscreenlocker_greet: PAM adding faulty module:
/usr/lib64/security/pam_console.so
---
13:18:12 kscreenlocker_greet: kf.kirigami: Failed to find a Kirigami platform
plugin
13:18:12 kscreenlocker_greet: qt.qpa.wayland: Wayland does not support
QWindow::requestActivate()
13:18:12 kscreenlocker_greet: libpng warning: iCCP: known incorrect sRGB
profile
13:18:12 kscreenlocker_greet: qt.qpa.wayland: Wayland does not support
QWindow::requestActivate()
13:18:12 kscreenlocker_greet: qt.qpa.wayland: Wayland does not support
QWindow::requestActivate()
13:18:12 kscreenlocker_greet: qt.qpa.wayland: Wayland does not support
QWindow::requestActivate()
13:18:12 kscreenlocker_greet: qt.qpa.wayland: Wayland does not support
QWindow::requestActivate()
13:18:12 kscreenlocker_greet: qt.qpa.wayland: Wayland does not support
QWindow::requestActivate()
13:18:12 kscreenlocker_greet: qt.qpa.wayland: Wayland does not support
QWindow::requestActivate()
13:18:43 kscreenlocker_greet: QEventLoop: Cannot be used without QApplication
13:18:43 kscreenlocker_greet: pam_unix(kde:auth): unexpected response from
failed conversation function
13:18:43 kscreenlocker_greet: QEventLoop: Cannot be used without QApplication
---
13:18:43 kscreenlocker_greet: pam_unix(kde:auth): conversation failed
13:18:43 kscreenlocker_greet: pam_unix(kde:auth): auth could not identify
password for [user]
```
STEPS TO REPRODUCE
1. Enable "Automatically lock screen" after 1 minute
2. Set "Unlock without password for" 5 seconds
3. Wait the minute until the screen gets locked automatically
4. Move your cursor within the 5 seconds period
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 39
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11
Kernel Version: 6.5.11-300.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
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