I haven't posted in a while, but I'm still a heavy KDE 5 user and I really like how KDE 5 is evolving, big kudos to all people involved!

I'm on Arch Linux and since the update to 5.5.2 my main panel seems to randomly disappear. I then have to add a new default panel and configure it all over again. This has happened 2 times so far, the first time I thought I might have accidentally removed the panel, but now it happened again while browsing the web. Another problem I have since 5.5.2 is that my display randomly turns itself off and on again.

Here is my .xsession-errors log which seems to contain relevant log messages to my issues:

Code: Select all

startkde: Starting up...
Service started, version: 6.2.0
OpenGL vendor string:                   X.Org
OpenGL renderer string:                 Gallium 0.4 on AMD CYPRESS (DRM 2.43.0, LLVM 3.7.0)
OpenGL version string:                  3.0 Mesa 11.1.0
OpenGL shading language version string: 1.30
Driver:                                 R600G
GPU class:                              EVERGREEN
OpenGL version:                         3.0
GLSL version:                           1.30
Mesa version:                           11.1
X server version:                       1.18
Linux kernel version:                   4.2.5
Requires strict binding:                no
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
unversioned plugin detected, may result in instability
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
kbuildsycoca4 running...
kbuildsycoca4(1334) KBuildSycoca::checkTimestamps: checking file timestamps
kbuildsycoca4(1334) KBuildSycoca::checkTimestamps: timestamps check ok
kbuildsycoca4(1334) kdemain: Emitting notifyDatabaseChanged ()
yakuake(1312)/kdecore (KLibrary) findLibraryInternal: plugins should not have a 'lib' prefix: "libkonsolepart.so"
No metadata file in the package, expected it at: "/mnt/shared/data/Wallpapers//metadata.desktop"
No metadata file in the package, expected it at: "/mnt/shared/data/Wallpapers//metadata.desktop"
No metadata file in the package, expected it at: "/mnt/shared/data/Wallpapers//metadata.desktop"
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
Couldn't find node arrow-down. Skipping rendering.
Couldn't find node arrow-up. Skipping rendering.
Couldn't find node arrow-right. Skipping rendering.
Couldn't find node arrow-left. Skipping rendering.
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
yakuake(1312)/konsole Konsole::Session::run: Attempted to re-run an already running session.
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/main.qml:37: TypeError: Cannot read property 'DateTime' of undefined
plasma-nm: New connection  "was-guckst-du"  added
plasma-nm: New connection  "was-guckst-du2"  added
plasma-nm: New connection  "was-guckst-du2"  added
plasma-nm: New connection  "was-guckst-du"  added
plasma-nm: New connection  "Wired connection 1"  added
plasma-nm: New wireless network  "UPC5242431"  added
plasma-nm: New wireless network  "Mamikado"  added
plasma-nm: New wireless network  "was-guckst-du2"  added
plasma-nm: New wireless network  "WLAN-908A91"  added
plasma-nm: New wireless network  "MAMIKADO2"  added
plasma-nm: New wireless network  "was-guckst-du"  added
plasma-nm: New wireless network  "450E"  added
plasma-nm: New wireless network  "EasyBox-mulli"  added
plasma-nm: New wireless network  "berlin.kaplani"  added
plasma-nm: New wireless network  "EasyBox-F0B044"  added
plasma-nm: New wireless network  "FRITZ!Box Fon WLAN 7390"  added
plasma-nm: New wireless network  "WLAN-206434"  added
plasma-nm: New wireless network  "WLAN-VGBRYN"  added
plasma-nm: New wireless network  "ALICE-WLAN48"  added
plasma-nm: Item  "was-guckst-du" : device changed to  "/org/freedesktop/NetworkManager/Devices/2"
plasma-nm: Access point  "was-guckst-du" : merged to  "was-guckst-du"  connection
plasma-nm: Item  "was-guckst-du2" : device changed to  "/org/freedesktop/NetworkManager/Devices/2"
plasma-nm: Access point  "was-guckst-du2" : merged to  "was-guckst-du2"  connection
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:351:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:342:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:333:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:323:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:256:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:246:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:237:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:228:30: Unable to assign [undefined] to QString
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///home/simon/.local/share/plasma/plasmoids/org.kde.resourcesMonitor/contents/ui/main.qml:36: TypeError: Cannot read property of null
systemtray: ST Dataengine true
systemtray: ST new task  "org.kde.StatusNotifierItem-1298-1/StatusNotifierItem"
systemtray: ST new task  "org.kde.StatusNotifierItem-1222-1/StatusNotifierItem"
Known plasmoid ids: QHash()
systemtray: ST Found DBus-able Applet:  "org.kde.plasma.battery" "org.kde.Solid.PowerManagement"
systemtray: ST Found DBus-able Applet:  "org.kde.plasma.networkmanagement" "org.freedesktop.NetworkManager"
systemtray: ST Found DBus-able Applet:  "org.kde.plasma.mediacontroller" "org.mpris.MediaPlayer2.*"
systemtray: ST Found DBus-able Applet:  "org.kde.plasma.bluetooth" "org.bluez"
systemtray:

 ==========================================================================================
systemtray: ST new task  "org.kde.plasma.volume"
systemtray: Loading applet:  "org.kde.plasma.volume" 0
unversioned plugin detected, may result in instability
systemtray:

 ==========================================================================================
systemtray: ST new task  "org.kde.plasma.clipboard"
systemtray: Loading applet:  "org.kde.plasma.clipboard" 0
unversioned plugin detected, may result in instability
systemtray:

 ==========================================================================================
systemtray: ST new task  "org.kde.plasma.devicenotifier"
systemtray: Loading applet:  "org.kde.plasma.devicenotifier" 0
unversioned plugin detected, may result in instability
systemtray:

 ==========================================================================================
systemtray: ST new task  "org.kde.plasma.notifications"
systemtray: Loading applet:  "org.kde.plasma.notifications" 0
systemtray:

 ==========================================================================================
systemtray: ST new task  "org.kde.plasma.printmanager"
systemtray: Loading applet:  "org.kde.plasma.printmanager" 0
unversioned plugin detected, may result in instability
networkmanager-qt: void NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&) Unhandled property "Devices"
plasma-nm: NetworkManager state changed to  2
org.kde.plasma.pulseaudio: Attempting connection to PulseAudio sound daemon
org.kde.plasma.pulseaudio: QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
file:///usr/lib/qt/qml/org/kde/plasma/extras/ScrollArea.qml:48: Error: Cannot assign to non-existent property "interactive"
Notifications service registered
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/Notifications.qml:135: TypeError: Cannot read property 'IdleTime' of undefined
XSync seems available and ready
XSync Inited
Supported, init completed
file:///usr/lib/qt/qml/QtQuick/Controls/Button.qml:96: TypeError: Cannot read property of null
file:///usr/lib/qt/qml/QtQuick/Controls/Button.qml:96: TypeError: Cannot read property of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:37: TypeError: Cannot read property 'flat' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:38: TypeError: Cannot read property 'hovered' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:124: TypeError: Cannot read property 'text' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Base/ButtonStyle.qml:83: TypeError: Cannot read property 'menu' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:37: TypeError: Cannot read property 'flat' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:38: TypeError: Cannot read property 'hovered' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:124: TypeError: Cannot read property 'text' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Base/ButtonStyle.qml:83: TypeError: Cannot read property 'menu' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Button.qml:96: TypeError: Cannot read property of null
file:///usr/lib/qt/qml/QtQuick/Controls/Button.qml:96: TypeError: Cannot read property of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:37: TypeError: Cannot read property 'flat' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:38: TypeError: Cannot read property 'hovered' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:124: TypeError: Cannot read property 'text' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Base/ButtonStyle.qml:83: TypeError: Cannot read property 'menu' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:37: TypeError: Cannot read property 'flat' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:38: TypeError: Cannot read property 'hovered' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:124: TypeError: Cannot read property 'text' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Base/ButtonStyle.qml:83: TypeError: Cannot read property 'menu' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Button.qml:96: TypeError: Cannot read property of null
file:///usr/lib/qt/qml/QtQuick/Controls/Button.qml:96: TypeError: Cannot read property of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:37: TypeError: Cannot read property 'flat' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:38: TypeError: Cannot read property 'hovered' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Plasma/ToolButtonStyle.qml:124: TypeError: Cannot read property 'text' of null
file:///usr/lib/qt/qml/QtQuick/Controls/Styles/Base/ButtonStyle.qml:83: TypeError: Cannot read property 'menu' of null
libkcups: Create-Printer-Subscriptions last error: 1282 Bad file descriptor
libkcups: Request failed 1282 -1
libkcups: Get-Jobs last error: 1282 Bad file descriptor
libkcups: Get-Jobs last error: 1282 Bad file descriptor
ST : DBus service  "org.kde.Solid.PowerManagement" appeared. Loading  "org.kde.plasma.battery"
systemtray: ST new task  "org.kde.plasma.battery"
systemtray: Loading applet:  "org.kde.plasma.battery" 0
unversioned plugin detected, may result in instability
Plasma Shell startup completed
file:///usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/printmanager.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/printmanager.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/printmanager.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/printmanager.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:444:5: QML Text: Cannot anchor to a null item.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
<Unknown File>: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.systemtray/contents/ui/TaskDelegate.qml:156: TypeError: Cannot read property 'taskItem' of undefined
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/batterymonitor.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
ST : DBus service  "org.freedesktop.NetworkManager" appeared. Loading  "org.kde.plasma.networkmanagement"
systemtray: ST new task  "org.kde.plasma.networkmanagement"
systemtray: Loading applet:  "org.kde.plasma.networkmanagement" 0
unversioned plugin detected, may result in instability
org.kde.plasma.pulseaudio: state callback
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
plasma-nm: Item  "was-guckst-du2" : active connection state changed to  1
plasma-nm: NetworkManager state changed to  4
plasma-nm: Item  "was-guckst-du2" : connection updated
org.kde.plasma.pulseaudio: state callback
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml: QML Plasmoid: Cannot anchor to an item that isn't a parent or sibling.
org.kde.plasma.pulseaudio: state callback
org.kde.plasma.pulseaudio: ready
plasma-nm: NetworkManager state changed to  7
networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "Metered"
plasma-nm: Item  "was-guckst-du2" : active connection changed to  2
plasma-nm: Item  "was-guckst-du2" : connection updated
Currrent active notifications: QHash()
Guessing partOf as: 0
 New Notification:  "was-guckst-du2" "Connection 'was-guckst-du2' activated." -1 & Part of: 0
trying to show an empty dialog
trying to show an empty dialog
trying to show an empty dialog
trying to show an empty dialog
Couldn't find node shadow. Skipping rendering.
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  261 "Properties"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  262 "Volume"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  268 "CardIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  269 "Ports"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  270 "ActivePortIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  261 "Properties"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  262 "Volume"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  268 "CardIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  269 "Ports"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  270 "ActivePortIndex"
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
trying to show an empty dialog
no winId: probably startup task
no winId: probably startup task
no winId: probably startup task
no winId: probably startup task
[1847:1847:1229/122157:ERROR:sandbox_linux.cc(338)] InitializeSandbox() called with multiple threads in process gpu-process
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  261 "Properties"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  262 "Volume"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  268 "CardIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  269 "Ports"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  270 "ActivePortIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  261 "Properties"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  262 "Volume"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  268 "CardIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  269 "Ports"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  270 "ActivePortIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  261 "Properties"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  262 "Volume"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  268 "CardIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  269 "Ports"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  270 "ActivePortIndex"
I/O warning : failed to load external entity "/home/simon/.qalculate/eurofxref-daily.xml"
I/O warning : failed to load external entity "/home/simon/.qalculate/eurofxref-daily.xml"
Created new window in existing browser session.
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  261 "Properties"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  262 "Volume"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  268 "CardIndex"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  269 "Ports"
org.kde.plasma.pulseaudio: returning roles QHash((262, "Volume")(263, "Muted")(264, "HasVolume")(265, "VolumeWritable")(266, "Name")(267, "Description")(268, "CardIndex")(269, "Ports")(270, "ActivePortIndex")(257, "Index")(258, "PulseObject")(259, "ObjectName")(260, "Index")(261, "Properties"))
org.kde.plasma.pulseaudio: PROPERTY CHANGED ( 0 ) ::  270 "ActivePortIndex"
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
[WARNING:flash/platform/pepper/pep_module.cpp(63)] SANDBOXED
Fontconfig error: Cannot load default config file
plasma-nm: New wireless network  "EasyBox-4B3916"  added
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(14033)] [.Compositor-0x20b3d0349480]GL ERROR :GL_INVALID_OPERATION : glCreateAndConsumeTextureCHROMIUM: invalid mailbox name
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
[1847:1847:1229/122327:ERROR:gles2_cmd_decoder.cc(7430)] [.Compositor-0x20b3d0349480]RENDER WARNING: texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.
Fontconfig error: Cannot load default config file
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
plasma-nm: Wireless network  "berlin.kaplani"  removed completely
QXcbConnection: XCB error: 2 (BadValue), sequence: 53103, resource id: 60817415, major code: 142 (Unknown), minor code: 3
QXcbConnection: XCB error: 2 (BadValue), sequence: 53226, resource id: 67108865, major code: 142 (Unknown), minor code: 3
Currrent active notifications: QHash()
Guessing partOf as: 0
 New Notification:  "Panel Removed" "A panel has been removed." 0 & Part of: 0
qml:  totalCountChanged 1
trying to show an empty dialog
trying to show an empty dialog
trying to show an empty dialog
Panel 37 removed by user
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:215: TypeError: Cannot read property 'Layout' of null
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:215: TypeError: Cannot read property 'Layout' of null
libkcups: Create-Printer-Subscriptions last error: 1282 Bad file descriptor
libkcups: Request failed 1282 -1
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:215: TypeError: Cannot read property 'Layout' of null
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:215: TypeError: Cannot read property 'Layout' of null
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:215: TypeError: Cannot read property 'Layout' of null
file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:215: TypeError: Cannot read property 'Layout' of null
requesting config for "Panel" without a containment!
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
kscreen: Primary output changed from KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" ) to KScreen::Output(Id: 85 , Name: "DisplayPort-0" ) ( "DisplayPort-0" )
Fontconfig error: Cannot load default config file


It even says "Panel Removed", but who or what removed it?! I certainly didn't this time and I also didn't get the usual notification when I remove widgets from my panel.
Let me know if more information is required and I'll happily help debug this.

Thanks!

Almost the same here, but reproducible: I plugin a 2nd screen and if KScreen recognizes it automatically, the default(!) panel is moved to the 2nd screen. No chance to move it back to the primary screen. When I disconnect from the 2nd screen, the panel is gone and I have to reconfigure it. I have to do this after each disconnect from an external monitor! (It's usually a bad thing to let software do things automatically. BTW: With KDE4 I had KRandRTray, which UNFORTUNATLY doesn't work anymore. It was way smarter than KScreen...)

I'm on Arch Linux and upgraded from KDE4 around Xmas, as archlinux.org recommended to do so. HP ZBook (Intel Graphics).

Paul

Probem hopefully solved for me: Removed KScreen.