Created attachment 112780 [details] Glitch in panel UI As you can see in the attachment, my task-manager only shows black, distorted boxes instead of the symbols. It somehow appears that the color gets inverted. I have encountered this issue for the second time now. It seems to happen randomly while using the PC with an external LCD (not sure though if it has something to do with that). It affects the panel and its symbols as well as the application launcher. It does not make a difference if icon-only task manager is used or the standard one. My notebook is a Elitebook 810 Revolve G3, i5 5200U with integrated graphics running Tumbleweed, Kernel 4.16.8, Mesa 18.0.3, Plasma 5.12.5, Frameworks 5.45, QT 5.10.0.
Created attachment 112798 [details] 2nd appearance "in white"
It happened again. Amongst my programs open I have two windows of inkscape. I tried to bring forth the second windows to focus but it wouldn't appear. The glitch happened after I had pressed the icon several times trying to bring forth the window.
Created attachment 112799 [details] Also applies to other icons, like sound slider and mute
Created attachment 112811 [details] Task bar icons are completely scrabled
Comment on attachment 112811 [details] Task bar icons are completely scrabled KDE Neon 16.04 Plasma 5.12.5
Same issue is happening for me.
This is also the case for me: KDE Neon 5.12 KDE Plasma: 5.12.5 KDE Framework: 5.46.0 QT Version: 5.10.0 Kernel: 4.13.0-43-generic This started several weeks ago and is now happening multiple times daily (3 times in the past 2 hours), requiring a restarting Plasma shell. It is often triggered when moving the mouse to icons on the panel. The icons and text in the menu are likewise affected. The issue is sometimes accompanied by other strange behaviour. For example, I was attempting to take a screenshot of the latest occurrence, using the default screenshot application, however once opened the application failed to respond to keyboard input and the entire desktop became unresponsive, needing a hard reboot. There are a range of instability issues (at least 1 hard reboot required every day now) which occur at or around the same time as this panel issue, either coincidental or linked behaviour. I have a second monitor, sometimes connected through Display Port, however this issue happens whether or not the monitor is connected and/or active at the time.
(In reply to dan from comment #7) > This is also the case for me: > > KDE Neon 5.12 > KDE Plasma: 5.12.5 > KDE Framework: 5.46.0 > QT Version: 5.10.0 > Kernel: 4.13.0-43-generic > > This started several weeks ago and is now happening multiple times daily (3 > times in the past 2 hours), requiring a restarting Plasma shell. > > It is often triggered when moving the mouse to icons on the panel. > > The icons and text in the menu are likewise affected. > > The issue is sometimes accompanied by other strange behaviour. For example, > I was attempting to take a screenshot of the latest occurrence, using the > default screenshot application, however once opened the application failed > to respond to keyboard input and the entire desktop became unresponsive, > needing a hard reboot. > > There are a range of instability issues (at least 1 hard reboot required > every day now) which occur at or around the same time as this panel issue, > either coincidental or linked behaviour. > > I have a second monitor, sometimes connected through Display Port, however > this issue happens whether or not the monitor is connected and/or active at > the time. Further to above, I reported this issue a few weeks ago, as it related to another bug in Krunner, here: https://bugs.kde.org/show_bug.cgi?id=394320
I'm on fedora 28. My system info is the following: kde plasma: 5.12.5 kde frameworks: 5.46.0 qt version: 5.10.1 kernel: 4.16-12-300 When it happens I usually just use xkill and click on the panel to restart it. Sometimes it works. Interestingly I have only seen this behaviour on my laptop Dell XPS 15. An identically configured desktop has not had the issue.
This behaviour is exhibiting on my Lenovo T410s. Intel integrated graphics, no Nvidia or AMD driver malarkey to consider. So it seems that, going on what's reported here, the problem's evident on a number of different devices and distros.
I can make this happen reproducibly. I have 4 virtual desktops that can be switched back and forth using the middle wheel on the mouse with the pointer on an open spot on the desktop. If I switch quickly (roll the wheel back and forth) so that the virtual desktops switch quickly, and then go to the panel and move the mouse cursor back and forth from left to right to make things pop up off the panel, then I can get the glitch within a minute of doing this. I don't know exactly what triggers it, but it's relatively easy to reproduce.
(In reply to Eric from comment #11) > I can make this happen reproducibly. I have 4 virtual desktops that can be > switched back and forth That's interesting Eric - I wonder if this is somehow related to the 'Pager' widget I also have quite a few virtual desktops configured - currently set at 8. I've got them in 2 rows of 4 in the widget. Although (total speculation), it seems more likely it could be a bug in the 'preview' display of windows, when the cursor moves over the icons in the panel. Can anyone confirm that this has happened whilst *NOT* immediately following mousing over the panel icons? I can't definitively say for sure, but I can't remember an occurrence when this wasn't the case.
Dan: I may have narrowed it down. It does appear to be something with the pager. Try this and see if it happens for you. 1. open several konsole windows so that app identifier in the panel will pop up window previews when you hover over it on the panel. If you click on the app identifier while the previews are shown they should shrink to a text list of the windows. 2. Go to your pager and move the mouse around all over the virtual windows. Hover long enough over one pager virtual desktop so that a window list pops up. 3. Go back over to the konsole app identifier in the panel and hover and let the preview windows show. 4. Click on the app identifier so that the previews shrink to the text list. 5. repeat until you get the glitch. It seems to occur for me after step 3 or 4, but step 2 appears to be necessary for it to happen, at least for me.
Let me rewrite step 4 to include one more point. 4. Click on the app identifier so that the previews shrink to the text list. While the text list is up for the open konsole apps, move the cursor to other apps in the panel and back to the konsole list. Move on and off the panel so that the preview list shows up when going back to the konsole app, and again click it down to the text list.
(In reply to Eric from comment #14) > Let me rewrite step 4 to include one more point. > > 4. Click on the app identifier so that the previews shrink to the text list. > While the text list is up for the open konsole apps, move the cursor to > other apps in the panel and back to the konsole list. Move on and off the > panel so that the preview list shows up when going back to the konsole app, > and again click it down to the text list. Yes, I was able to replicate consistently. Essentially, all it takes to trigger the bug on my system is: 1. Open 2 or more instances of the same application - in this example, Konsole. Hover over that app's icon in the panel until the preview window appears, then click on that preview to display all the available windows in the 'selector' view. Click on one of the Konsole windows to select it, which closes that view. 2. Move the cursor to the Pager, and hover over the virtual desktop box containing those Konsole windows. 3. Move the mouse cursor back to the app's icon in the panel and enjoy the bug. I regularly have 2 or more instances of the same application open (Firefox windows, Pycharm, etc). I wonder if the following environmental variables are essential to trigger the bug: * Multiple instances of the same application. * Multiple desktops, with the Pager widget displayed on the Panel. I'm not sure whether to open a new bug with for Pager, referencing this one, or somehow add Pager to the component list for this bug ... hopefully someone involved with the project will see this and chip in with guidance. Not sure if this is significant, but running Plasma Shell from CLI shows a lot of these errors being written to STDOUT / STDERR org.kde.plasmaquick: Delayed preload of "Device Notifier" after 6.009 seconds org.kde.plasmaquick: Applet "Device Notifier" loaded after 33 msec QXcbConnection: XCB error: 2 (BadValue), sequence: 2254, resource id: 109051913, major code: 142 (Unknown), minor code: 3 file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipInstance.qml:41: ReferenceError: AppPid is not defined file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipInstance.qml:36: ReferenceError: index is not defined file:///usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipInstance.qml:181: ReferenceError: IsMinimized is not defined QXcbConnection: XCB error: 2
Created attachment 113034 [details] Plasmashell 5.12.5 cli log
I were able to trigger this glitch also by following steps. After restarting plasmashell: 1. Hover over any such app's icon on the panel which has more than one instance running and click for text list of available windows / instances. At this point there appears at least one, sometimes two log entries onto cli: trying to show an empty dialog trying to show an empty dialog 2. Click again on app's icon on the panel so that text list disappears 3. Hover over pager and wait for a list of open windows 4. Then quickly move mouse sideways alongside panel and graphics get garbled I don't know is it for any help but I attach my plasmashell log here
Looks like we are not alone. It's reported on the Debian bugs site as well: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900316#5 See message #5 and related messages.
*** Bug 395086 has been marked as a duplicate of this bug. ***
*** Bug 395125 has been marked as a duplicate of this bug. ***
I might have some more data. This is an excerpt of journalctl recording the moment this bug appeared. Tonight this has happened to me three times already. I have many windows open but it seems to be happening when hovering over the panel (sometimes). Jun 13 01:13:31 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58237, resource id: 26556094, major code: 20 (GetProperty), minor code: 0 Jun 13 01:13:31 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58236, resource id: 26556094, major code: 20 (GetProperty), minor code: 0 Jun 13 01:13:31 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58234, resource id: 26556094, major code: 20 (GetProperty), minor code: 0 Jun 13 01:13:31 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58233, resource id: 26556094, major code: 20 (GetProperty), minor code: 0 Jun 13 01:13:31 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58231, resource id: 26556094, major code: 20 (GetProperty), minor code: 0 Jun 13 01:12:20 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 54606, resource id: 26552921, major code: 20 (GetProperty), minor code: 0 Jun 13 01:12:20 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 54605, resource id: 26552921, major code: 20 (GetProperty), minor code: 0 Jun 13 01:12:20 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 54603, resource id: 26552921, major code: 20 (GetProperty), minor code: 0 Jun 13 01:12:20 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 54602, resource id: 26552921, major code: 20 (GetProperty), minor code: 0 Jun 13 01:12:20 X.box kwin_x11[2218]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 54600, resource id: 26552921, major code: 20 (GetProperty), minor code: 0 Jun 13 01:11:49 X.box kdeinit5[30519]: Qt: Session management error: networkIdsList argument is NULL
Still present in 5.13
This happend to me when cursor was on task bar and app identifier is transforming from text list to previews. It was on complete new Fedora 28 instalation with no aditional software except firefox and updates. I had no virtual desktops configured and did not use pager applet.
I am having this problem, too. Software KDE Plasma Version: 5.12.5 KDE Frameworks Version: 5.46.0 Qt Version: 5.11.0 Kernel Version: 4.14.48-2-MANJARO OS Type 64-bit Hardware Processors: 4 x Intel Core i7-3520M CPU @2.90GHz Memory: 15.4 GiB of RAM
I somehow managed to lose the panel on my main laptop screen (and have a secondary panel on the 22" monitor beside it). I therefore opted to reset the panel to the default, and start over. ls ~/.config/plasma-org.kde.plasma.desktop-appletsrc sudo mv ~/.config/plasma-org.kde.plasma.desktop-appletsrc ~/.config/plasma-org.kde.plasma.desktop-appletsrc-old (reboot) The reason for checking the directory first was that I had been reading some instructions on the web about how to reset the panel that were directing to move or delete a .kde directory, but that seems to be for KDE4, not KDE5 Plasma. This may or may not work around the whole Glitch in panel UI issue. I will come back to this bug report if the problem recurs ... otherwise, you might presume that this reset is at least a temporary fix.
I'm sad to report that resetting the panel to default does not solve the problem. After the first reset, I my usual customization by setting up a second panel on the second monitor (i.e. on the right window edge of the right monitor). The glitch turned up within 10 minutes. Thinking that this glitch might be due to a second panel, I reset again. In the case that it might be causes by a single application having multiple windows (i.e. Google Chrome starts a separate window for Hangouts), I terminated the second window. The glitch didn't happen on the first day, but has on the second day (after suspending the Thinkpad and then resuming the next morning). The only workaround I've found is to reboot the computer. Until then, all I can do is alt-tab between screens. Truly annoying. Are there any other diagnostics that would move resolving the problem along?
Here's my ugly workaround to kill and restart plasmashell, based on https://askubuntu.com/questions/481329/can-i-restart-the-kde-plasma-desktop-without-logging-out . On Manjaro, from Konsole ... -- begin paste -- killall plasmashell #to stop it kstart5 plasmashell #to restart it -- end paste -- ... and presumably on Debian-based (Ubuntu-based) systems (which I haven't actually tried) ... -- begin paste -- killall plasmashell #to stop it kstart plasmashell #to restart it -- end paste -- For those who want to see the transcript from the terminal ... -- begin paste -- $ killall plasmashell $ kstart5 plasmashell Omitting both --window and --windowclass arguments is not recommended $ org.kde.plasmaquick: Applet preload policy set to 1 Warning: all files used by qml by the plasmoid should be in ui/. The file in the path "file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/code/LayoutManager.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/LayoutManager.js") Warning: all files used by qml by the plasmoid should be in ui/. The file in the path "file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/code/FolderTools.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/FolderTools.js") trying to show an empty dialog trying to show an empty dialog Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString) Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion 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. trying to show an empty dialog Warning: all files used by qml by the plasmoid should be in ui/. The file in the path "file:///usr/share/plasma/plasmoids/org.kde.panel/contents/code/LayoutManager.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/LayoutManager.js") trying to show an empty dialog Warning: all files used by qml by the plasmoid should be in ui/. The file in the path "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/code/uiproperties.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/uiproperties.js") libkcups: Create-Printer-Subscriptions last error: 0 successful-ok libkcups: Get-Jobs last error: 0 successful-ok libkcups: Get-Jobs last error: 0 successful-ok Plasma Shell startup completed org.kde.plasmaquick: New Applet "Application Launcher" with a weight of 92 org.kde.plasmaquick: New Applet "Digital Clock" with a weight of 42 libkcups: 0 libkcups: 0 Warning: all files used by qml by the plasmoid should be in ui/. The file in the path "file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/code/logic.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.battery/contents/ui/logic.js") Both point size and pixel size set. Using pixel size. networkmanager-qt: void NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&) Unhandled property "AllDevices" networkmanager-qt: void NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&) Unhandled property "Capabilities" networkmanager-qt: void NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&) Unhandled property "ConnectivityCheckAvailable" networkmanager-qt: void NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&) Unhandled property "ConnectivityCheckEnabled" networkmanager-qt: void NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&) Unhandled property "Devices" networkmanager-qt: void NetworkManager::NetworkManagerPrivate::propertiesChanged(const QVariantMap&) Unhandled property "GlobalDnsConfiguration" networkmanager-qt: virtual void NetworkManager::ActiveConnectionPrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "StateFlags" networkmanager-qt: virtual void NetworkManager::ActiveConnectionPrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "StateFlags" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "LldpNeighbors" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "Real" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "LldpNeighbors" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "Real" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "LldpNeighbors" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "Real" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "LldpNeighbors" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "Real" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "LldpNeighbors" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "Real" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "LldpNeighbors" networkmanager-qt: virtual void NetworkManager::DevicePrivate::propertyChanged(const QString&, const QVariant&) Unhandled property "Real" Warning: all files used by qml by the plasmoid should be in ui/. The file in the path "file:///usr/share/plasma/plasmoids/org.kde.plasma.bluetooth/contents/code/logic.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.bluetooth/contents/ui/logic.js") trying to show an empty dialog org.kde.plasmaquick: New Applet "Audio Volume" with a weight of 42 org.kde.plasmaquick: New Applet "Clipboard" with a weight of 42 org.kde.plasmaquick: New Applet "Device Notifier" with a weight of 42 org.kde.plasmaquick: New Applet "KDE Connect" with a weight of 42 org.kde.plasmaquick: New Applet "Notifications" with a weight of 42 org.kde.plasmaquick: New Applet "Printers" with a weight of 42 org.kde.plasmaquick: New Applet "Battery and Brightness" with a weight of 42 org.kde.plasmaquick: New Applet "Networks" with a weight of 42 org.kde.plasmaquick: New Applet "Bluetooth" with a weight of 42 org.kde.plasmaquick: Delayed preload of "Application Launcher" after 0.356 seconds KAStatsFavoritesModel::setFavorites is ignored KActivities: Database connection: "kactivities_db_resources_140434325888128_readonly" query_only: QVariant(qlonglong, 1) journal_mode: QVariant(QString, "wal") wal_autocheckpoint: QVariant(qlonglong, 100) synchronous: QVariant(qlonglong, 0) Entry is not valid "kontact.desktop" 0x55f3c2a9d920 Entry is not valid "ktp-contactlist.desktop" 0x55f3c2a9d920 Entry is not valid "org.kde.discover.desktop" 0x55f3c2a9d920 Entry is not valid "kontact.desktop" 0x55f3c2a9d920 Entry is not valid "ktp-contactlist.desktop" 0x55f3c2a9d920 Entry is not valid "org.kde.discover.desktop" 0x55f3c2a9d920 Closing SQL connection: "kactivities_db_resources_140434325888128_readonly" trying to show an empty dialog org.kde.plasmaquick: Applet "Application Launcher" loaded after 69 msec org.kde.plasmaquick: Delayed preload of "Networks" after 1.633 seconds org.kde.plasmaquick: Applet "Networks" loaded after 96 msec org.kde.plasmaquick: Delayed preload of "Digital Clock" after 2.168 seconds 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. trying to show an empty dialog org.kde.plasmaquick: Applet "Digital Clock" loaded after 99 msec org.kde.plasmaquick: Delayed preload of "KDE Connect" after 2.35 seconds org.kde.plasmaquick: Applet "KDE Connect" loaded after 22 msec org.kde.plasmaquick: Delayed preload of "Clipboard" after 2.991 seconds org.kde.plasmaquick: Applet "Clipboard" loaded after 117 msec org.kde.plasmaquick: Delayed preload of "Printers" after 3.259 seconds libkcups: CUPS-Get-Printers last error: 0 successful-ok libkcups: Cancel-Subscription last error: 0 successful-ok libkcups: Create-Printer-Subscriptions last error: 0 successful-ok file:///usr/share/plasma/plasmoids/org.kde.plasma.printmanager/contents/ui/PopupDialog.qml:105:13: QML PropertyChanges: Cannot assign to non-existent property "tooltipText" org.kde.plasmaquick: Applet "Printers" loaded after 10 msec libkcups: 3 "Xerox_Phaser_3320_PS" org.kde.plasmaquick: Delayed preload of "Device Notifier" after 3.429 seconds org.kde.plasmaquick: Applet "Device Notifier" loaded after 9 msec org.kde.plasmaquick: Delayed preload of "Bluetooth" after 3.696 seconds org.kde.plasmaquick: Applet "Bluetooth" loaded after 25 msec org.kde.plasmaquick: Delayed preload of "Notifications" after 4.072 seconds org.kde.plasmaquick: Applet "Notifications" loaded after 0 msec org.kde.plasmaquick: Delayed preload of "Audio Volume" after 5.309 seconds org.kde.plasmaquick: Applet "Audio Volume" loaded after 56 msec org.kde.plasmaquick: Delayed preload of "Battery and Brightness" after 5.56 seconds org.kde.plasmaquick: Applet "Battery and Brightness" loaded after 16 msec -- end paste -- (I wasn't sure if I needed sudo, but I didn't. Sudo actually creates a new panel owned by the system rather than the user, so the applications already running didn't show up in the taskbar).
This problem still recurs for me. Software KDE Plasma Version: 5.13.2 KDE Frameworks Version: 5.47.0 Qt Version: 5.11.1 Kernel Version: 4.14.54-1-MANJARO OS Type 64-bit Hardware Processors: 4 x Intel Core i7-3520M CPU @2.90GHz Memory: 15.4 GiB of RAM
David, what happens if you create a new user and switch your gui session onto that user identity? By this step, you could ensure there's no stale configs under any of the HOME$/(.config|.cache) directories? Reason why I'm asking this is that I got an update for some plasma components by Sun 8. July and since then I have not been able to trigger this bug. I'm running Fedora 28 and now my versions of crucial components are: plasmashell 5.12.6 Qt: 5.10.1 KDE Frameworks: 5.47.0 So for plasmashell, only minor .6 were changed from .5. I tried to dig KDE git and Fedora package repos but were not yet able to identify patch that could explain why this seems to work for me now. Any KDE experts on the line who could give a hint where to look for? As a developer I'm very curious
@Juha, thanks for the response. On reflection, I first reported the problem on June 24, with ... Software KDE Plasma Version: 5.12.5 KDE Frameworks Version: 5.46.0 Qt Version: 5.11.0 Kernel Version: 4.14.48-2-MANJARO OS Type 64-bit ... and then on July 20 with ... KDE Plasma Version: 5.13.2 KDE Frameworks Version: 5.47.0 Qt Version: 5.11.1 Kernel Version: 4.14.54-1-MANJARO OS Type 64-bit ... when the problem started recurring. In between, there was a period when I didn't have any problems. Looking at /var/log/plasma.log, I see .. [2018-06-15 07:36] [ALPM] upgraded qt5-base (5.10.1-8 -> 5.11.0-1) [2018-06-15 07:36] [ALPM] upgraded plasma-framework (5.45.0-1 -> 5.46.0-2.1) [2018-06-15 07:36] [ALPM] upgraded plasma-integration (5.12.5-1 -> 5.12.5-2) [2018-07-02 21:41] [ALPM] upgraded qt5-base (5.11.0-1 -> 5.11.1-1) [2018-07-02 21:41] [ALPM] upgraded plasma-framework (5.46.0-2.1 -> 5.47.0-1.1) [2018-07-02 21:41] [ALPM] upgraded plasma-integration (5.12.5-2 -> 5.13.2-1) I had rebooted Manjaro KDE, and haven't had a glitch in the last 24 hours. I'm not sure what to make of this. I'm not a developer, so I'm just reporting the issue as it arises. At the first reports in June, the reboots weren't solving the issue. If the issue arises again, I'll repost. (I'm not doing formal testing, and am just trying to get work done, so creating another userid is counterproductive for me).
Report dates from 2018 and contains nothing that can be actioned upon. There is nothing at a plasma level that could cause this, so I think it's reasnoble to assume this is fixed with new graphic drivers / newer Qt. Please reopen if this reproduces with Qt 5.15