Hi!
2016-09-26 23:25 GMT+02:00 Borden Rhodes
<jrvp@bordenrhodes.com>:
As the subject says, on my Debian Stretch laptop, attempting to use
the KDE print settings or KUser prompts me to login with the root
account. This is a problem because I installed Debian with the root
account locked out. I thought Polkit was supposed to have taken care
of all of this. Perhaps I'm missing a package? I also reinstalled
kdesudo to no joy.
I'm sure other K settings apps are broken like this, too, but I
haven't found them yet.
I was able to avoid the root password prompt from the KDE printer settings module by just adding my user to the lpadmin group:
$ sudo adduser <user> lpadmin
(logout - login afterwards)
Other programs like KUser (KSystemLog is another one) seem a different issue.
Apparently kuser, when launched from plasmashell, gains root privileges through kdesu (not Polkit).
After you install kdesudo you *can* invoke it explicitly to start programs with sudo, but applications configured to be executed as root in the kde menu will still get root privileges through kdesu which requires the root password.
If you want kdesudo to replace kdesu by default, you have to 'dpkg-reconfigure kdesudo' and select 'Yes' to divert kdesu:
# dpkg-reconfigure kdesudo
(select Yes, output:)
Adding 'diversion of /usr/lib/kde4/libexec/kdesu to /usr/lib/kde4/libexec/kdesu.kde by kdesudo'
Adding 'diversion of /usr/share/man/man1/kdesu.1.gz to /usr/share/man/man1/kdesu.kde.1.gz by kdesudo'
This used to work in kde4 (wheezy, jessie). It seems that those diversions have no effect In kf5 because kdesu is loaded from a different location:
$ pgrep -ax kdesu
5676 /usr/lib/x86_64-linux-gnu/libe
xec/kf5/kdesu -u root -c /usr/bin/kuser --icon kuser -caption KUser
So, in fact applications launched through the multiarch /usr/lib/<arch>/libexec/kf5/kd