Le 21/09/2017 à 17:12, Renaud (Ron) OLGIATI a écrit :
> Under Debian, I could su to root in a console, and launch gparted from the CLI.

     This could never work. su does not transmit the X connection (don't 
know the details). You got to use gksu or gksudo, or some equivalent 
command. With just su you can only use the CLI parted.

     Didier