Possible Duplicate:
How do I change the default session for when using auto-logins?
Any way to make gnome-shell as default window manager other than adding
gnome-shell --replace
' with in the startup application
Possible Duplicate:
How do I change the default session for when using auto-logins?
Any way to make gnome-shell as default window manager other than adding
gnome-shell --replace
' with in the startup application
By selecting gnome-shell at login from the drop down box pictured here:
It should automatically be set to default for future logins until you select a different window manager.
If it doesn't automatically default the gnome-shell than you can edit /etc/lightdm/lightdm.conf and change
to
EDITED: to add how to change default manually.