I figured out, that it's problem only with certain widgets, for example 2 kind of clocks...

and default panel per original post ?

which clocks?

yep, default panel causes the problem (maybe because it contains clocks),

I tried analog and binary clock, both crashes.

run the following commands separately then for each post the output if any, this will open the clocks in a window and should show errors

analog clock

Code: Select all

plasma-windowed clock

binary clock

Code: Select all

plasma-windowed binaryclock

Code: Select all

lordu@M:~$ plasma-windowed clock
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
lordu@M:~$ plasma-windowed: symbol lookup error: /usr/lib/kde4/plasma_engine_calendar.so: undefined symbol: _ZN7Akonadi11ETMCalendarC1EP7QObject

lordu@M:~$ plasma-windowed binaryclock
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
lordu@M:~$ plasma-windowed: symbol lookup error: /usr/lib/kde4/plasma_engine_calendar.so: undefined symbol: _ZN7Akonadi11ETMCalendarC1EP7QObject


Hmm... something strange happened, kate doesnt work for me.
"A KDE text-editor component could not be found.
Please check your KDE installation."

But I used it earlier...

Ok, I reinstalled system and it works perfectly. So it was indeed broken installation.

In this case it was likely an incomplete update - to Akonadi or PIM related libraries.