When I tried to start
partitionmanager (KDE Partition Manager) on Fedora 26, it would always ask for the root user’s password, despite the fact that the root user was disabled in my setup.
The dialog box that popped up looked like it might be
kdesu,. a.k.a. KDE
su, is a KDE version of
su that allows a process to be run as another user, like root. When I tried running
kdesu separately it asked for root’s password again. So I knew the problem lay within
The ever-helpful Arch wiki contained just the golden nugget I was after: a command that would configure
kdesu to use
kwriteconfig5 --file kdesurc --group super-user-command --key super-user-command sudo
This fixed the problem for me, as
sudo requests your password, not root’s. Whether you’re allowed to run the command depends on the contents of the system’s sudoers file. Look that file up if you continue to have difficulty.