Adding the display-setup-script parameter to /etc/lightdm/lightdm.conf results in LightDM not being started correctly (black screen, X-cursor). Did some test runs to confirm that any value specified for the parameter triggers the described behavior.
$ cat /etc/lightdm/lightdm.conf [SeatDefaults] greeter-session=lightdm-gtk-greeter greeter-hide-users=false user-session=xubuntu display-setup-script=sh -c 'echo 123 > /dev/null' $
Adding the display- setup-script parameter to /etc/lightdm/ lightdm. conf results in LightDM not being started correctly (black screen, X-cursor). Did some test runs to confirm that any value specified for the parameter triggers the described behavior.
$ cat /etc/lightdm/ lightdm. conf session= lightdm- gtk-greeter hide-users= false xubuntu setup-script= sh -c 'echo 123 > /dev/null'
[SeatDefaults]
greeter-
greeter-
user-session=
display-
$