Hi,

When I log in to KDE, the desktop crashes (black screen), can move the cursor only, and I get back to the login screen. Using cinnamon works well. OS: Arch Linux


Journalctl shows me this, but I have no idea what's wrong.

Code: Select all

Nov 24 03:44:24 Ruper plasmashell[157576]: Plasma Shell startup completed
Nov 24 03:44:24 Ruper plasmashell[157576]: Error: cannot change the containment to AppletsLayout
Nov 24 03:44:24 Ruper plasmashell[157576]: kf.kio.core: We got some errors while running testparm "Weak crypto is allowed"
Nov 24 03:44:24 Ruper plasmashell[157576]: trying to show an empty dialog
Nov 24 03:44:24 Ruper plasmashell[157576]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "he>
Nov 24 03:44:24 Ruper plasmashell[157576]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "he>
Nov 24 03:44:24 Ruper plasmashell[157576]: Both point size and pixel size set. Using pixel size.
Nov 24 03:44:24 Ruper plasmashell[157576]: Both point size and pixel size set. Using pixel size.
Nov 24 03:44:24 Ruper plasmashell[157576]: Both point size and pixel size set. Using pixel size.
Nov 24 03:44:24 Ruper plasmashell[157576]: file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:524:9: QML Label: Binding loop detected for prop>
Nov 24 03:44:24 Ruper plasmashell[157576]: file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:483:13: QML Label: Binding loop detected for pro>
Nov 24 03:44:24 Ruper plasmashell[157576]: trying to show an empty dialog
Nov 24 03:44:24 Ruper plasmashell[157576]: Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
Nov 24 03:44:25 Ruper plasmashell[157576]: file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:30:1: QML DropArea (parent or ancestor of QQuickLayoutAttached): Bindi>
Nov 24 03:44:25 Ruper plasmashell[157576]: file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:483:13: QML Label: Binding loop detected for pro>
Nov 24 03:44:25 Ruper plasmashell[157576]: file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:524:9: QML Label: Binding loop detected for prop>
Nov 24 03:44:25 Ruper plasmashell[157576]: file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:544:5: QML Label: Binding loop detected for prop>
Nov 24 03:44:25 Ruper plasmashell[157576]: trying to show an empty dialog
Nov 24 03:44:26 Ruper audit[157576]: ANOM_ABEND auid=1000 uid=1000 gid=100 ses=11 pid=157576 comm="plasmashell" exe="/usr/bin/plasmashell" sig=11 res=1
Nov 24 03:44:34 Ruper audit[157187]: ANOM_ABEND auid=1000 uid=1000 gid=100 ses=11 pid=157187 comm="plasmashell" exe="/usr/bin/plasmashell" sig=11 res=1
Nov 24 03:46:32 Ruper plasmashell[158193]: Couldn't start kglobalaccel from org.kde.kglobalaccel.service: QDBusError("org.freedesktop.DBus.Error.TimedOut", "Failed to activate service>
Nov 24 03:46:34 Ruper plasmashell[158193]: KActivities: FATAL ERROR: Failed to contact the activity manager daemon
Nov 24 03:47:25 Ruper audit[158560]: ANOM_ABEND auid=1000 uid=1000 gid=100 ses=13 pid=158560 comm="plasmashell" exe="/usr/bin/plasmashell" sig=6 res=1
Nov 24 03:47:25 Ruper plasmashell[158560]: qt.qpa.xcb: could not connect to display :0
Nov 24 03:47:25 Ruper plasmashell[158560]: qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
Nov 24 03:47:25 Ruper plasmashell[158560]: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
                                               
                                                Available platform plugins are: wayland-org.kde.kwin.qpa, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland>
Nov 24 03:47:52 Ruper audit[158193]: ANOM_ABEND auid=1000 uid=1000 gid=100 ses=13 pid=158193 comm="plasmashell" exe="/usr/bin/plasmashell" sig=11 res=1



The first thing you should check is if you haven't inadvertently removed some system components, apparently your Qt installation doesn't start correctly and several basic services can't be started. That usually happens when you have either missing components or a badly configured system. On my system I would run an update and upgrade to the latest packages and if that doesn't help, reconfigure the installed applications. Since this is done differently on different distributions, this really should be taken to you distro.

And please, be a tad more detailed about the exact Plasma version you use and what you changed from the default installation...