SUMMARY When locking the screen using the ctrl+alt+L hotkey or the shortcut e.g. in the user switcher applet, it takes several seconds for the screen to actually lock and for the the lock screen to appear. STEPS TO REPRODUCE 1. Lock the screen (e.g. using ctrl+alt+L) OBSERVED RESULT It takes several seconds for the screen to lock. EXPECTED RESULT The screen locks immediately. SOFTWARE/OS VERSIONS Linux: KDE neon KDE Plasma Version: 5.26.4 KDE Frameworks Version: 5.101.0 Qt Version: 5.15.7 ADDITIONAL INFORMATION
Cannot reproduce. What happens when you run `kscreenlocker_greet` manually in a terminal window? And can you paste the output it prints to the terminal window? (on my system it lives at /usr/libexec/kscreenlocker_greet, but it might be different on your system)
On Neon it looks like it is located at /usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet. The result of manually running the kscreenlocker_greet executable is the same as using the keyboard shortcut: it takes ~5 seconds for the screen to lock. Here is the output: riccardo@Sleipnir ~ $ /usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet kf.kirigami: Failed to find a Kirigami platform plugin Locked at 1672996986 QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old QXcbClipboard: SelectionRequest too old qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:807:9: QML QQuickItem: Binding loop detected for property "width" QXcbClipboard: SelectionRequest too old file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/VirtualKeyboard.qml:16: TypeError: Cannot read property 'width' of null file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/VirtualKeyboard.qml:34: TypeError: Cannot read property 'height' of null (The "QCxbClipboard: SelectionRequest too old" bit was repeated roughly 900 times before the last two lines, I cut it down to just one)
Thanks for the info.
Also experiencing a delay to lock. I have three monitors and they "lock" slowly one at a time, left to right, over the course of several seconds. Here is the output: ``` $ /usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet Locked at 1675207759 file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/lockscreen/LockScreenUi.qml:599: TypeError: Value is undefined and could not be converted to an object file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/UserList.qml:43:9: Unable to assign [undefined] to bool file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/UserList.qml:43:9: Unable to assign [undefined] to bool file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/UserList.qml:43:9: Unable to assign [undefined] to bool file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/VirtualKeyboard.qml:16: TypeError: Cannot read property 'width' of null file:///usr/share/plasma/look-and-feel/org.kde.breeze.desktop/contents/components/VirtualKeyboard.qml:34: TypeError: Cannot read property 'height' of null ```
*** Bug 467210 has been marked as a duplicate of this bug. ***
Thank you for the bug report. Unfortunately we were not able to get to it yet. Can we ask you to please check if this is still an issue with Plasma 6.2.5 (the latest released version)? If you can still reproduce the bug, please change the Status to "CONFIRMED". Thanks.
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME. For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging. Thank you for helping us make KDE software even better for everyone!
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.
I can still reproduce this, although with Plasma 6.3.2 it is noticeably faster. It still takes 2-3 seconds to lock, which is however much better. I don't know if and how much it would be possible to optimise this further, though, nor if this is what other people normally experience - if it is, feel free to close the bug again. Thanks!
I noticed bug 464907 which says X11 is slower to blank the screen than Wayland. Is there any difference in this behavior on your system between X11 and Wayland?
(In reply to TraceyC from comment #10) > I noticed bug 464907 which says X11 is slower to blank the screen than > Wayland. > Is there any difference in this behavior on your system between X11 and > Wayland? I don't use Wayland and, given the issues I have with the multi-monitor setup I have (see bug 501346), I am not going to test it until I have an absolute need to exit the current session as it is an absolute pain to make things work the way they should. Realistically, it could take weeks.