The session script in /etc/X11/Xsession.d/52libcanberra-gtk-module_add-to-gtk-modules sets up GTK_MODULES, but it should only be set when logging in GNOME.
The session script in /etc/X11/ Xsession. d/52libcanberra -gtk-module_ add-to- gtk-modules sets up GTK_MODULES, but it should only be set when logging in GNOME.