“gnome-fallback” no longer a valid session name for org.gnome.desktop.session/session-name
I came over from gnome-session#78
It is somewhat misleading to say 'Known values are “gnome” and “gnome-fallback”', since the latter has not been valid for a number of years:
commit bef001f9b0fe41ef731810e6520dcead5bd55334
Author: Matthias Clasen <mclasen@redhat.com>
Date: Fri Jan 25 16:49:59 2013 -0500
Remove the fallback session
We no longer support fallback mode in 3.8, so we don't need this
session definition anymore. We are keeping the runnable helper,
since it sets some X properties that we need.
https://bugzilla.gnome.org/show_bug.cgi?id=687586
:100644 100644 6f0fb337 5646732d M data/Makefile.am
:100644 000000 ec7e8a3b 00000000 D data/gnome-fallback.session.desktop.in.in
:100644 100644 8bddcf48 1ed67f2d M data/gnome.session.desktop.in.in