Created attachment 222139 [details]
Patch to solve the problem described
gsmartcontrol-root does not work on systems where PolKit (pkexec) is used to enter the root password.
The password can be entered, but the application does not start afterwards.
The following error can be seen when calling from the command line.
Unable to init server: Verbindung mit 127.0.0.1 ist gescheitert: Connection refused
(gsmartcontrol:2642): Gtk-WARNING **: 20:59:04.176: cannot open display:
^Triage: [tags] in issue Titles are deprecated