Ok. One more tip on WB Unix/Linux.
In you home folder, there is a ~/.mw folder which contains the Ansys Workbench settings just as on Windows.
~.mw/Application Data/Ansys/v212
The GUI setting for the Distributed is in:
~.mw/Application Data/Ansys/v212/SolveHandlers.xml
Look for
DistributeAnsysSolution
(Enabled = 1 Disabled = 0)