Lost Taskbar and Icons in Kubuntu 18.04

[calvertrp]

I am a bit of a novice with Kubuntu. I have a Lenovo 3000 N200 with 2.5GB RAM running Kubuntu 18.04. I upgraded to this in the last month or so. Things were working fine until this past week. I now have no icons, taskbar, etc. When I log in, programs startup as they should, but no taksbar, etc. I have to ALT-F2 to type in commands to start programs. I have to ALT-TAB to switch between apps. I have surfed around and reinstalled plasma, kwin, etc. I created a new user and have the same results.

Any suggestions are appreciated.

Thank you!

[shag00]

If it's only a couple of weeks old just re install the entire kubuntu.

[GreyGeek]

You may have slid the taskbar out of site off the bottom of the screen, or reduced it to a tab along the side or in a corner at the top. Probably because you didn’t lock widgets.

IF you actually deleted it you can install a new one. The right mouse context menu is your friend.

[calvertrp]

Thanks GreyGeek. If you mean right click on the screen, that is not doing anything. Right click works in the apps I open, but on the blank screen it has no effect. How can I install the taskbar if I deleted? Help appreciated.

[vinnywright]

is plasmashell not starting , open a konsole and type "plasmashell &" then hit enter and see if you get your desktop back .

VINNY

[calvertrp]

Thanks Vinny. No luck. I did "plasmashell &"and captured its output (below). I am trying to decipher, but not understanding much of it.

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.desktopco
ntainment/contents/code/LayoutManager.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/L
ayoutManager.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.desktopco
ntainment/contents/code/FolderTools.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/Fol
derTools.js")
trying to show an empty dialog
kf5.kpackage: No metadata file in the package, expected it at: "/home/rob/Pictures/"
kf5.kpackage: No metadata file in the package, expected it at: "/home/rob/Pictures/"
kf5.kpackage: No metadata file in the package, expected it at: "/home/rob/Pictures/"
trying to show an empty dialog
trying to show an empty dialog
trying to show an empty dialog
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QStr ing,QString,QString)
Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion
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/con
tents/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.no
tifications/contents/code/uiproperties.js" was expected at QUrl("file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/u
i/uiproperties.js")
libkcups: Get-Jobs last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
libkcups: Create-Printer-Subscriptions last error: 0 successful-ok
Plasma Shell startup completed
org.kde.plasmaquick: New Applet "Notes" with a weight of 95
org.kde.plasmaquick: New Applet "Notes" with a weight of 65
org.kde.plasmaquick: New Applet "Application Launcher" with a weight of 100
org.kde.plasmaquick: New Applet "Digital Clock" with a weight of 18
libkcups: 10
KCrash: Attempting to start /usr/bin/plasmashell from kdeinit
KCrash: crashing...

crashRecursionCounter = 2
KCrash: Application Name = plasmashell path = /usr/bin pid = 2490
KCrash: Arguments: /usr/bin/plasmashell
KCrash: Attempting to start /usr/lib/i386-linux-gnu/libexec/drkonqi from kdeinit
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 18 and type 'Read', disabling...
QSocketNotifier: Invalid socket 9 and type 'Read', disabling...
Unable to start Dr. Konqi
Re-raising signal for core dump handling.

[vinnywright]

plasmashell is crashing , can you think of anything you did right before this started that may have messed with root files ?

VINNY

[calvertrp]

Setup a new printer in the past two weeks...that's about it.

[calvertrp]

Shag00, is it possible to reinstall Kubuntu 18.04 on top of itself and still retain all of my user data/programs (much like an upgrade from older Operating System)? Thank you.

[vinnywright]

try

sudo apt-get install --reinstall kubuntu-desktop

may or may not help but cant hurt .

VINNY

[calvertrp]

Vinny - tried the reinstall...same results. Plasmashell keeps crashing...thanks for the suggestion.

[vinnywright]

what dose

ls -la /usr/share/plasma/plasmoids/org.kde.panel

show ?

VINNY

[calvertrp]

Vinny - thanks. Tried the reinstall but still same crash. I will keep researching.

[calvertrp]

VINNY - plaese see below:

rob@rob-laptop:~$ ls -la /usr/share/plasma/plasmoids/org.kde.panel
total 28
drwxr-xr-x 3 root root 4096 Oct 9 18:40 .
drwxr-xr-x 73 root root 4096 Oct 14 12:28 ..
drwxr-xr-x 5 root root 4096 Jul 19 2016 contents
-rw-r--r-- 1 root root 1676 Sep 25 06:03 metadata.desktop
-rw-r--r-- 1 root root 2708 Sep 26 16:45 metadata.json
-rw-r--r-- 1 root root 4439 Sep 25 06:03 plasma-containment-panel.desktop

[vinnywright]

and again for

ls  -la /usr/share/plasma/plasmoids/org.kde.panel/contents/ui

just trying to see if the expected things are their and owned by root

VINNY