[CentOS] Centos 7: Remove Gnome from GDM options

[Jay Leafey]

On 10/04/2014 03:55 PM, Frank Cox wrote:
> When you click on the gear icon on the GDM login screen, it provides a list of the available desktop environments so you can pick between them.
>
> Since I exclusively use Mate on this computer, how can I remove the other options from that menu?  Earlier today when I logged in the machine decided on its own that what I really wanted was Gnome Classic, so I had to log out to change it back to Mate, then log in again.
>
> I would like to tell it to use Mate exclusively, with no other options to select by mistake.
>

Well, I haven't tried it, but I believe the available session types are 
stored in desktop files in /usr/share/xsessions.  You could move the 
ones you don't want to a different location and see how the picker in 
GDM behaves... a bit like swatting a fly with a hammer, but as long as 
you can move them back it should be OK.  I found mention of this in an 
Ubuntu-oriented forum somewhere, don't recall where.

Here's what that directory on my C7 box, with MATE installed, looks like:

> [root at megamind gdm]#  ls /usr/share/xsessions
> gnome-classic.desktop         gnome.desktop
> gnome-custom-session.desktop  mate.desktop
> [root at megamind gdm]#

I would try moving all of the .desktop files elsewhere temporarily and 
see if that changes the available desktop list.

YMMV!
-- 
Jay Leafey - jay.leafey at mindless.com
Memphis, TN