Bug#845575: plasma-discover can neither install new software nor perform updates

[Matthias Klumpp]

Hi!
I assume you are running into PackageKit crash
https://github.com/hughsie/PackageKit/issues/177 can you please
confirm that by either using the pkmon tool to monitor PK activity or
by running the packagekit daemon manually? (sudo
/usr/lib/packagekit/packagekitd --verbose)
Cheers,
    Matthias