
When logging in from gdm to gnome, the main plane is deactivated, and leads to the screen going blank before gnome is able to enable it again. Using the new CloseFB ioctl, allows to keep the gdm login screen displayed until gnome-shell replace it. Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com> Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3659>