As usual (me and my experiments) ha I ventured to see if I could switch desktops from a terminal running out of Unity desktop. The purpose of the experiment was to see if I could find a quicker macro to change DE without having to log off and log back in. I used fvwm-crystal. The experiment was a success (with the help of a little terminal reminder called '--replace') .
Here is experiment.
How is this topical to Utopic Unicorn?
To see if I could change DE/WM from termimal
Open terminal in Unity session. Ctrl+Alt+t
sudo apt-get install fvwm-crystal
I then entered fvwm-crystal at the command line in terminal that was Running in Unity. An error came up and said it could not load "try --replace. I then entered fvwm-crystal -replace . The desktop then switched to fvwm-crystal (no log off/ log on required). All worked well. ( I just ignored the terminal errors scrolling by in the script). I then entered 'unity' at the prompt in the terminal and the Unity desktop opened (while ignoring errors in terminal and worked exceptionally well with he exception that Unity was now in some sort of turbo-mode with the dash and loading of programs working much faster than normal after initially logging on. This all done in the newly converted Utopic Unicorn.
It may come in handy with this new cycle as we explore and devise new tests for mir, unity8 etc and , also a surprise to me, I don't have to log off and log back in saving some downtime. The other added bonus is turbo-unity (as I call it) and I am wondering why this phenom is taking place. One could assume that when I '--replace (d) unity with fvwm-crystal and back again that unity-desktop was already loaded in memory but I do not think this is the case.
ventrical@ventrical-desktop:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Utopic Unicorn (development branch)