independant displays (no coupled screen switching)?

[Ulli Horlacher]

My old workstation with Xubuntu 12.04 (Xfce 4,8) has two independant
displays. 

Display 1:

framstag at flupp:~: echo $DISPLAY 
:0.0

Display 2:

framstag at flupp:~: echo $DISPLAY 
:0.1


I can move the mouse pointer from one display to the other (but no windows)
and I can switch the virtual screens independantly, e.g. display 1 virtual
screen 1 and display 2 virtual screen 3.
This is what I want!

My new workstation with Xubuntu 16.04 (Xfce 4,12) now has two coupled
displays. Both have DISPLAY=:0.0 and I cannot switch the virtual screens
independantly. When I choose another screen with the Workspace Switcher,
both displays are switched together. BAD.

With Settings->Display (xfce4-display-settings) I was not able to
configure the displays independant.

What is the trick?


-- 
Ullrich Horlacher              Server und Virtualisierung
Rechenzentrum TIK         
Universitaet Stuttgart         E-Mail: horlacher at tik.uni-stuttgart.de
Allmandring 30a                Tel:    ++49-711-68565868
70569 Stuttgart (Germany)      WWW:    http://www.tik.uni-stuttgart.de/
REF:<20161005141802.GA23306 at rus.uni-stuttgart.de>