Multiple Monitors

[Lars Andre Landås <landas gmail com>]

I have learned from "The Binary Idiot" blog, that in a multiple monitor 
setup it is possbile to configure the workspace behavior in 
gconf-editor. For the change to take affect you need to restart Gnome Shell.

http://www.thebinaryidiot.com/archives/2011/11/11/gnome-shell-3-2-and-multiple-monitors/

When the option "workspaces_only_on_primary" is disabled, the Window 
overview on the secondary monitor show all open programs on all workspaces.

Personally I would like the secondary monitor to only show programs 
running on the active workspace.

When  I change the  "workspaces_only_on_primary" option from enabled to 
disabled, I get the following error message on one of the monitors when 
I restart Gnome Shell. ( Alt+F2 -> r ). "Oh no! Something has gone wrong 
..." And it tells me to logout. Might not be a big problem if the goal 
is to change this option once, but what if you like to switch between 
this two modes?

Case:
- On a normal work day I want both displays to follow my workspace. ( 
workspaces_only_on_primary = false )
- But some times I want to lock one or a set of windows to my secondary 
workspace. ( workspaces_only_on_primary = true ). Maybe I want a webcast 
to be on my secondary monitor for an hour, while a do other work on my 
primary monitor. Then I want to change the  
workspaces_only_on_primary-option for a limited time.

Problem when change "workspaces_only_on_primary" from false to true:
- How should Gnome shell handle Windows on the secondary monitor on 
workspaces other than the active when this option change?

Sollution?:
- Move affected Windows from the secondary monitor to the workspace on 
primaery monitor.

Could this be a part of design goals for Gnome Shell or is this a 
feature only I would like to see?

--
Lars Andre