Created attachment 167449 [details] plasmashell journal entries SUMMARY I was busy writing an email, looked down and the taskbars on 3 monitors were missing. No other issue. STEPS TO REPRODUCE 1. nothing that I can think of 2. 3. OBSERVED RESULT taskbars missing EXPECTED RESULT SOFTWARE/OS VERSIONS Operating System: Mageia 10 KDE Plasma Version: 6.0.2 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Kernel Version: 6.6.18-server-1.mga10 (64-bit) Graphics Platform: Wayland Processors: 20 × 12th Gen Intel® Core™ i7-12700K Memory: 125.5 GiB of RAM Graphics Processor: AMD Radeon RX 6600 XT Manufacturer: Dell Inc. Product Name: XPS 8950 ADDITIONAL INFORMATION Issued: plasmashell & and all looks normal again.
another crash. restart and crash about 2 seconds later after a few of these, started "plasmashell -d" and no crash, so shutdown apps and rebooted
If something crashed, we need a backtrace of it so we can figure out what's going on. Can you please attach a backtrace of the crash using the coredumpctl command-line program, as detailed in https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl?
After I reported this, I switched back to KDE/X11. In the past few weeks, crashes occurred many times per hour with under 2 seconds to restart automatically; but the moving app windows onto the left-most screen became too much. So I returned to KDE/Wayland and it seems more stable (after less than 24 hours). Marking WORKSFORME until it occurs again and is reproducible.
Switched back to KDE/Wayland because KDE/X11 has become intolerable. $ coredumpctl --reverse No coredumps found. Journal contains: Apr 15 14:48:31 plasmashell[84330]: The Wayland connection broke. Did the Wayland compositor die? Apr 15 14:48:31 systemd[24746]: plasma-plasmashell.service: Main process exited, code=exited, status=255/EXCEPTION Apr 15 14:48:31 systemd[24746]: plasma-plasmashell.service: Failed with result 'exit-code'. Apr 15 14:48:31 systemd[24746]: plasma-plasmashell.service: Consumed 2h 16min 27.538s CPU time. Apr 15 14:48:32 systemd[24746]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 1. Apr 15 14:48:32 systemd[24746]: Starting plasma-plasmashell.service... Apr 15 14:48:32 systemd[24746]: Started plasma-plasmashell.service. Apr 15 14:48:32 plasmashell[2579556]: KPackageStructure of KPluginMetaData(pluginId:"org.kde.plasma.worldclock", fileName: "/usr/share/plasma/plasmoids/org.kde.plasma.worldclock/metadata.json") does not match requested format "Plasma/Applet" Apr 15 14:48:32 dbus-daemon[31101]: [session uid=1000 pid=31101] Activating via systemd: service name='org.kde.ksystemstats1' unit='plasma-ksystemstats.service' requested by ':1.1368' (uid=1000 pid=2579556 comm="/usr/bin/plasmashell --no-respawn") Apr 15 14:48:32 plasmashell[2579556]: kf.plasma.quick: Applet preload policy set to 1 Apr 15 14:48:32 plasmashell[2579556]: qt.qml.typeresolution.cycle: Cyclic dependency detected between "qrc:/qt/qml/org/kde/desktop/private/TextFieldContextMenu.qml" and "qrc:/qt/qml/org/kde/desktop/MenuItem.qml" Apr 15 14:48:32 plasmashell[2579556]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) Apr 15 14:48:32 plasmashell[2579556]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:32 plasmashell[2579556]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:32 plasmashell[2579556]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:32 plasmashell[2579556]: kscreen.kwayland: Connection to Wayland server timed out. Apr 15 14:48:33 plasmashell[2579556]: kscreen.kwayland: Connection to Wayland server timed out. Apr 15 14:48:33 plasmashell[2579556]: The Wayland connection broke. Did the Wayland compositor die? Apr 15 14:48:33 systemd[24746]: plasma-plasmashell.service: Main process exited, code=exited, status=255/EXCEPTION Apr 15 14:48:33 systemd[24746]: plasma-plasmashell.service: Failed with result 'exit-code'. Apr 15 14:48:33 systemd[24746]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 2. Apr 15 14:48:33 systemd[24746]: Starting plasma-plasmashell.service... Apr 15 14:48:33 systemd[24746]: Started plasma-plasmashell.service. Apr 15 14:48:33 plasmashell[2579607]: KPackageStructure of KPluginMetaData(pluginId:"org.kde.plasma.worldclock", fileName: "/usr/share/plasma/plasmoids/org.kde.plasma.worldclock/metadata.json") does not match requested format "Plasma/Applet" Apr 15 14:48:33 dbus-daemon[31101]: [session uid=1000 pid=31101] Activating via systemd: service name='org.kde.ksystemstats1' unit='plasma-ksystemstats.service' requested by ':1.1370' (uid=1000 pid=2579607 comm="/usr/bin/plasmashell --no-respawn") Apr 15 14:48:33 plasmashell[2579607]: kf.plasma.quick: Applet preload policy set to 1 Apr 15 14:48:33 plasmashell[2579607]: qt.qml.typeresolution.cycle: Cyclic dependency detected between "qrc:/qt/qml/org/kde/desktop/private/TextFieldContextMenu.qml" and "qrc:/qt/qml/org/kde/desktop/MenuItem.qml" Apr 15 14:48:33 plasmashell[2579607]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) Apr 15 14:48:33 plasmashell[2579607]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:33 plasmashell[2579607]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:33 plasmashell[2579607]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:34 plasmashell[2579607]: kscreen.kwayland: Connection to Wayland server timed out. Apr 15 14:48:34 plasmashell[2579607]: kscreen.kwayland: Connection to Wayland server timed out. Apr 15 14:48:34 plasmashell[2579607]: The Wayland connection broke. Did the Wayland compositor die? Apr 15 14:48:34 systemd[24746]: plasma-plasmashell.service: Main process exited, code=exited, status=255/EXCEPTION Apr 15 14:48:34 systemd[24746]: plasma-plasmashell.service: Failed with result 'exit-code'. Apr 15 14:48:34 systemd[24746]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 3. Apr 15 14:48:34 systemd[24746]: Starting plasma-plasmashell.service... Apr 15 14:48:34 systemd[24746]: Started plasma-plasmashell.service. Apr 15 14:48:34 plasmashell[2579659]: KPackageStructure of KPluginMetaData(pluginId:"org.kde.plasma.worldclock", fileName: "/usr/share/plasma/plasmoids/org.kde.plasma.worldclock/metadata.json") does not match requested format "Plasma/Applet" Apr 15 14:48:34 dbus-daemon[31101]: [session uid=1000 pid=31101] Activating via systemd: service name='org.kde.ksystemstats1' unit='plasma-ksystemstats.service' requested by ':1.1372' (uid=1000 pid=2579659 comm="/usr/bin/plasmashell --no-respawn") Apr 15 14:48:34 plasmashell[2579659]: kf.plasma.quick: Applet preload policy set to 1 Apr 15 14:48:34 plasmashell[2579659]: qt.qml.typeresolution.cycle: Cyclic dependency detected between "qrc:/qt/qml/org/kde/desktop/private/TextFieldContextMenu.qml" and "qrc:/qt/qml/org/kde/desktop/MenuItem.qml" Apr 15 14:48:35 plasmashell[2579659]: qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000) Apr 15 14:48:35 plasmashell[2579659]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:35 plasmashell[2579659]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:35 plasmashell[2579659]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth" Apr 15 14:48:35 plasmashell[2579659]: kscreen.kwayland: Connection to Wayland server timed out. Apr 15 14:48:35 plasmashell[2579659]: kscreen.kwayland: Connection to Wayland server timed out. Apr 15 14:48:35 plasmashell[2579659]: The Wayland connection broke. Did the Wayland compositor die? Apr 15 14:48:35 systemd[24746]: plasma-plasmashell.service: Main process exited, code=exited, status=255/EXCEPTION Apr 15 14:48:35 systemd[24746]: plasma-plasmashell.service: Failed with result 'exit-code'. Apr 15 14:48:35 systemd[24746]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 4. Apr 15 14:48:35 systemd[24746]: plasma-plasmashell.service: Start request repeated too quickly. Apr 15 14:48:35 systemd[24746]: plasma-plasmashell.service: Failed with result 'exit-code'. Apr 15 14:48:35 systemd[24746]: Failed to start plasma-plasmashell.service. I was focused on my task, so didn't notice the taskbar was gone until I needed it. Restarted it with: plasmashell & Apr 15 15:02:29 dbus-daemon[31101]: [session uid=1000 pid=31101] Activating via systemd: service name='org.kde.ksystemstats1' unit='plasma-ksystemstats.service' requested by ':1.1390' (uid=1000 pid=2582018 comm="plasmashell") Apr 15 15:02:30 dbus-daemon[31101]: [session uid=1000 pid=31101] Activating service name='org.kde.KSplash' requested by ':1.1390' (uid=1000 pid=2582018 comm="plasmashell")
Sigh... Walked away from the system, returned to find taskbar gone again 20 minutes after restarting it.
From the journal log, it looks like KWin crashed and somehow took down Plasma with it, which is odd as that's not supposed to be happening in Plasma 6 (and it's not happening for me). Regardless, now we need to know why KWin crashed. For that, we need a backtrace of the crash for the kwin_wayland process. You may be able to retrieve it with coredumpctl. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
As stated in comment 4: $ coredumpctl --reverse No coredumps found. Have not seen the problem since.
Ok, then I'm afraid there is nothing we can do about this. :(