Nothing in dmesg but I get this in messages:

Jul 30 13:41:53 lavignelinuxp53 plasmashell[468771]: KCrash: Application 'plasmashell' crashing...
Jul 30 13:41:53 lavignelinuxp53 plasmashell[468771]: KCrash: Attempting to start /usr/libexec/drkonqi
Jul 30 13:41:54 lavignelinuxp53 plasmashell[468801]: klauncher: Exiting on signal 15
Jul 30 13:41:54 lavignelinuxp53 kwin_x11[467669]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 29198, resource id: 90177544, major code: 18 (ChangeProperty), minor code: 0
Jul 30 13:41:55 lavignelinuxp53 kwin_x11[467669]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 29220, resource id: 6291528, major code: 15 (QueryTree), minor code: 0
Jul 30 13:41:55 lavignelinuxp53 kwin_x11[467669]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 29251, resource id: 6291470, major code: 15 (QueryTree), minor code: 0
Jul 30 13:41:55 lavignelinuxp53 kwin_x11[467669]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 29267, resource id: 6291476, major code: 15 (QueryTree), minor code: 0
Jul 30 13:41:55 lavignelinuxp53 kwin_x11[467669]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 29282, resource id: 6291480, major code: 15 (QueryTree), minor code: 0
Jul 30 13:41:55 lavignelinuxp53 kwin_x11[467669]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 29296, resource id: 6291484, major code: 15 (QueryTree), minor code: 0
Jul 30 13:41:55 lavignelinuxp53 kwin_x11[467669]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 29309, resource id: 6291504, major code: 15 (QueryTree), minor code: 0
Jul 30 13:41:55 lavignelinuxp53 systemd[17236]: plasma-plasmashell.service: Main process exited, code=exited, status=253/n/a
Jul 30 13:41:59 lavignelinuxp53 systemd[17236]: plasma-plasmashell.service: Failed with result 'exit-code'.
Jul 30 13:41:59 lavignelinuxp53 systemd[17236]: plasma-plasmashell.service: Consumed 5.781s CPU time.
Jul 30 13:41:59 lavignelinuxp53 systemd[17236]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 2.
Jul 30 13:41:59 lavignelinuxp53 systemd[17236]: Stopped KDE Plasma Workspace.
Jul 30 13:41:59 lavignelinuxp53 systemd[17236]: plasma-plasmashell.service: Consumed 5.781s CPU time.
Jul 30 13:41:59 lavignelinuxp53 systemd[17236]: Starting KDE Plasma Workspace...
Jul 30 13:41:59 lavignelinuxp53 systemd[17236]: Started KDE Plasma Workspace.



There is also a bunch of these: (this is on my existing user that could have been used with Plasma before)

Jul 30 13:42:00 lavignelinuxp53 klauncher[469018]: Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:531:9: QML Label: Binding loop detected for property "height"
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:486:13: QML Label: Binding loop detected for property "height"
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: trying to show an empty dialog
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: file:///usr/share/plasma/plasmoids/org.kde.panel/contents/ui/main.qml:30:1: QML DropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "m
inimumWidth"

Kinda stumped as it seems to be acting as if it is missing something.

Also seeing this:
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Panel.qml:213: Error: Invalid write to global property "prefix"
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: Cyclic dependency detected between "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml" and "file:///usr/share/plasma/plasmoids/
org.kde.plasma.notifications/contents/ui/NotificationHeader.qml"
Jul 30 13:42:01 lavignelinuxp53 cupsd[4462]: REQUEST localhost - - "POST / HTTP/1.1" 200 565 Create-Printer-Subscriptions successful-ok
Jul 30 13:42:01 lavignelinuxp53 systemd[17236]: Started dbus-:1.2-org.kde.KSplash@2.service.
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: trying to show an empty dialog
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: Entry is not valid "kontact.desktop" QSharedPointer(0x5643bffe6e20)
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: Entry is not valid "org.kde.ktpcontactlist.desktop" QSharedPointer(0x5643bffe7030)
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: Entry is not valid "ktpcontactlist.desktop" QSharedPointer(0x5643bffe7030)
Jul 30 13:42:01 lavignelinuxp53 plasmashell[468988]: Entry is not valid "kate.desktop" QSharedPointer(0x5643bffe7220)


Thoughts appreciated. 

Matthew


On Fri, Jul 30, 2021 at 12:36 PM Patrick Boutilier <boutilpj@ednet.ns.ca> wrote:
Does dmesg show anything when the crash occurs?


On 7/30/21 7:51 AM, Matthew Lavigne wrote:
> In the original note stated that it fails for new user also.  I haven't
> tried since I pull updates yesterday.  I am running 4 screens in
> an inverted T
> If I run qt5ct (while running cinnamon) I get a warning that
> QT_QPA_PLATFORMTHEME environment variable is not set (not sure if that
> is specific to qt5ct or if it is an overall ENV that I am missing with
> Plasma.  I will have to do a clean install with this or do a full Plasma
> rip and replace.   Just stumped as I didn't think that I would have had
> any 'old' kde settings that could interfere.
>
> akmod-nvidia-470.57.02-1.fc34.x86_64 (negativo17 is source for driver)
>
>
> Matthew
>
> On Thu, Jul 29, 2021 at 10:12 PM Ed Greshko <ed.greshko@greshko.com
> <mailto:ed.greshko@greshko.com>> wrote:
>
>     On 30/07/2021 03:25, Matthew Lavigne wrote:
>      > That is exactly what I am trying to do.  I click on the menu
>     icon, then select Internet so that I can see Chrome or another
>     application.  Highlight the application and then right click. On the
>     right click, there is a pause, then a blackscreen and
>     plasmashell restarts.
>      >
>      > This is a updated install  that I installed with:
>      > sudo dnf groupinstall "KDE Plasma Workspaces"
>      >
>      > Patrick - this is with X11 (Running with Nvidia drivers w/4
>     screens attached)
>
>     Fully updated F34.  Running X11, with nVidia drivers via rpmfusion.
>     2 screens.
>
>     I do not get crashes doing the same thing.
>
>     akmod-nvidia-470.57.02-1.fc34
>
>     Try creating a new user and doing the same from the new user's account.
>
>     --
>     Remind me to ignore comments which aren't germane to the thread.
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