I want to be able to run (just) a program/few programs under a test user named "test" and at the same time benefit of the GUI of the program. I need this because I want to be able to save test settings without conflicting with my own settings. What I found so far is that I can either:
su testto switch to the user, but then I can not run programs with GUI... they complain about not having a display:
No protocol specified
** (gedit:17086): WARNING **: Could not open X display No protocol specified
(gedit:17086): Gtk-WARNING **: cannot open display: :0
dm-tool switch-to-user testto actually switch over to that user
Any Idea how I can run programs as another user without having to change users and desktops each time?