SUMMARY Normally at night I do Super+L to lock my screen, then turn off my monitors. In the morning I turn on my montiors and move my mouse to see the password prompt. Today I instead of a password prompt there was a "Unlock" button. When I clicked it, it unlocked my session without prompting for my password. It sounds similar to this https://bugs.kde.org/show_bug.cgi?id=484363 but clicking the button unlocked my session, without asking for a password. And similarly, it doesn't happen every time (I haven't reproduced it by locking/unlocking since just observing it now). The logs had this very sus line: kscreenlocker_greet[582024]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined STEPS TO REPRODUCE 1. Lock screen at end of day, turn off monitors. 2. Next day turn on monitors, move mouse. 3. Observe "Unlock" button. Click it. OBSERVED RESULT Clicking "Unlock" unlocks the session without asking for a password. EXPECTED RESULT You should never be able to unlock the session no password or an invalid password. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.0.4 KDE Frameworks Version: 6.1.0 Qt Version: 6.7.0 Kernel Version: 6.8.7-arch1-2 (64-bit) Graphics Platform: Wayland Graphics Processor: AMD Radeon RX 6600 ADDITIONAL INFORMATION This was in the journalctl around when I unlocked it. Note the reference to "NoPasswordUnlock.qml". Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting maximized state Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting fullscreen state Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting maximized state Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting fullscreen state Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting maximized state Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting fullscreen state Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" Apr 30 08:47:01 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" Apr 30 08:47:01 kscreenlocker_greet[582024]: Data set on unsupported clipboard mode. QMimeData object will be deleted. Apr 30 08:47:07 kscreenlocker_greet[582024]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined Apr 30 08:47:07 kscreenlocker_greet[582024]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined Apr 30 08:47:07 kscreenlocker_greet[582024]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined Apr 30 08:47:07 kscreenlocker_greet[582024]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined Apr 30 08:47:12 kscreenlocker_greet[582024]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) Apr 30 08:47:12 kscreenlocker_greet[582024]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) Apr 30 08:47:12 kscreenlocker_greet[582024]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) Apr 30 08:47:12 kscreenlocker_greet[582024]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) Apr 30 08:47:12 kscreenlocker_greet[582024]: Failed to write to the pipe: Bad file descriptor. Apr 30 08:47:18 kioworker[650986]: kf.kio.core: An error occurred during write. The worker terminates now. Apr 30 08:47:20 systemd[1]: systemd-hostnamed.service: Deactivated successfully. Apr 30 08:47:21 kscreenlocker_greet[651083]: Data set on unsupported clipboard mode. QMimeData object will be deleted. Apr 30 08:47:21 kscreenlocker_greet[651083]: Data set on unsupported clipboard mode. QMimeData object will be deleted. Apr 30 08:47:21 kscreenlocker_greet[651083]: Data set on unsupported clipboard mode. QMimeData object will be deleted. Apr 30 08:47:21 kscreenlocker_greet[651083]: Data set on unsupported clipboard mode. QMimeData object will be deleted.
After two more nights, unlocking my computer on May 1st had the password prompt as expected, but today May 2nd it had the passwordless "Unlock" button again. Clicking it unlocked my desktop with no password needed :\ Here's from the logs this morning when turning on my screens, and then clicking the unlock button a minute later: May 02 07:20:58 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:58 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:58 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:58 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting maximized state May 02 07:20:58 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting fullscreen state May 02 07:20:58 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:58 pipewire-pulse[6766]: mod.combine-stream: 0x613c8e8ff500: out of playback buffers: Broken pipe May 02 07:20:58 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:58 pipewire-pulse[6766]: mod.combine-stream: 0x613c8e8ff500: out of playback buffers: Broken pipe May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:58 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:58 kwin_wayland[6312]: kwin_wayland_drm: atomic commit failed: Invalid argument May 02 07:20:58 kscreenlocker_greet[1855309]: Data set on unsupported clipboard mode. QMimeData object will be deleted. May 02 07:20:58 kscreenlocker_greet[1855309]: Data set on unsupported clipboard mode. QMimeData object will be deleted. May 02 07:20:59 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:59 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:20:59 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:21:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting maximized state May 02 07:21:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting fullscreen state May 02 07:21:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting maximized state May 02 07:21:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting fullscreen state May 02 07:21:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting maximized state May 02 07:21:01 kwin_wayland[6312]: kwin_core: KWin::LayerShellV1Window doesn't support setting fullscreen state May 02 07:21:01 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:21:01 kwin_wayland[6312]: kwin_core: Failed to load cursor theme "Oxygen_Blue" May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 plasmashell[271808]: [Parent 271808, Main Thread] WARNING: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped.: 'glib warning', file /usr/src/debug/firefox/firefox-125.0.2/toolkit/xre/nsSigHandlers.cpp:187 May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba090ae0 as subsurface because its parent is not mapped. May 02 07:21:01 firefox[271808]: Couldn't map window 0x744bba08f280 as subsurface because its parent is not mapped. May 02 07:21:01 pipewire-pulse[6766]: mod.combine-stream: 0x613c8eb6c810: out of playback buffers: Broken pipe May 02 07:21:01 kscreenlocker_greet[1855309]: Data set on unsupported clipboard mode. QMimeData object will be deleted. May 02 07:21:01 plasmashell[1148448]: 0084:fixme:hid:build_joystick_report_descriptor More than 8 absolute axes found, ignoring. May 02 07:21:06 kscreenlocker_greet[1855309]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined May 02 07:21:06 kscreenlocker_greet[1855309]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined May 02 07:21:06 kscreenlocker_greet[1855309]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined May 02 07:21:06 kscreenlocker_greet[1855309]: file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined May 02 07:21:56 kscreenlocker_greet[1855309]: qt.qpa.wayland: eglSwapBuffers failed with 0x300d, surface: 0x0 May 02 07:21:56 kscreenlocker_greet[1855309]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) May 02 07:21:56 kscreenlocker_greet[1855309]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) May 02 07:21:56 kscreenlocker_greet[1855309]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) May 02 07:21:56 kscreenlocker_greet[1855309]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) May 02 07:21:56 kscreenlocker_greet[1855309]: Failed to write to the pipe: Bad file descriptor.
This looks like a duplicate of 484363. Please follow that report for progress. Thanks! *** This bug has been marked as a duplicate of bug 484363 ***
Not a duplicate; in this case the user *can* unlock the session, but inappropriately, without providing their password!
For what it's worth, if it's at all helpful for anyone in digging in - the line that mentions "NoPasswordUnlock.qml:26: ReferenceError: tryToSwitchUser is not defined" looks like it's coming from the fact that a function, and then a call to that function from NoPasswordUnlock.qml, were implemented here: https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/2847 Then the function was deleted here, but the call from NoPasswordUnlock.qml remained: https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/3577 And is still present today: https://invent.kde.org/plasma/plasma-desktop/-/blob/Plasma/6.4/desktoppackage/contents/lockscreen/NoPasswordUnlock.qml?ref_type=heads#L26 And this looks like the place where NoPasswordUnlock.qml is getting referenced in the main UI file: https://invent.kde.org/plasma/plasma-desktop/-/blob/v6.3.90/desktoppackage/contents/lockscreen/LockScreenUi.qml?ref_type=tags#L55 - maybe that got incorrectly activated somehow?
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3009
Git commit 24857e68a01cf92929c48279b9c42251e136a682 by Marco Martin. Committed on 20/05/2025 at 11:06. Pushed by mart into branch 'master'. lockscreen: remove dead code The function tryToSwitchUser was removed in https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/3577 but still called, casing error output on terminal M +0 -1 desktoppackage/contents/lockscreen/NoPasswordUnlock.qml https://invent.kde.org/plasma/plasma-desktop/-/commit/24857e68a01cf92929c48279b9c42251e136a682
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3010
Git commit 2592f1fe98661fc64b88e422d7f018e6b26d2c9b by Marco Martin. Committed on 20/05/2025 at 11:47. Pushed by mart into branch 'Plasma/6.4'. lockscreen: remove dead code The function tryToSwitchUser was removed in https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/3577 but still called, casing error output on terminal (cherry picked from commit 24857e68a01cf92929c48279b9c42251e136a682) 24857e68 lockscreen: remove dead code Co-authored-by: Marco Martin <notmart@gmail.com> M +0 -1 desktoppackage/contents/lockscreen/NoPasswordUnlock.qml https://invent.kde.org/plasma/plasma-desktop/-/commit/2592f1fe98661fc64b88e422d7f018e6b26d2c9b
The fix was merged to master and will be in 6.4.0. Please set this report to REOPENED if the bug still occurs when your system has updated to that version. Thanks!