SUMMARY


STEPS TO REPRODUCE
1.  No idea, updating ubuntu and 'The KDE Crash Handler closed unexpectedly...Please manually report this error.'  Reporting as requested.  I'm not gonna make the determination on bug/not-bug.  You decide what you want to do.  I'm simply following directions.  
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT
Black screen. Apps still function, as does mouse and keyboard.  Ubuntu upgrade completed as expected.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Application: The KDE Crash Handler (drkonqi), signal: Aborted

[KCrash Handler]
#4  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:44
#5  __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
#6  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
#7  0x0000704591a4526e in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#8  0x0000704591a288ff in __GI_abort () at ./stdlib/abort.c:79
#9  0x0000704592290ba3 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x0000003000000030 in ?? ()
#11 0x00007ffe46b0c5c0 in ?? ()
#12 0x00007ffe46b0c4f0 in ?? ()
#13 0xa8d25a2913b33800 in ?? ()
#14 0x0000000000000000 in ?? ()
[Inferior 1 (process 121700) detached]