not sure if this is a crouton or kali issue but i dont remember it doing this a few months ago.
when trying to start xfce i get this
chronos@localhost / $ sudo startxfce4
Entering /mnt/stateful_partition/crouton/chroots/kali-rolling...
/usr/bin/startxfce4: Starting X server
/usr/lib/xorg/Xorg.wrap: Only console users are allowed to run the X server
/usr/bin/xinit: giving up
/usr/bin/xinit: unable to connect to X server: Connection refused
/usr/bin/xinit: server error
Unmounting /mnt/stateful_partition/crouton/chroots/kali-rolling...
Sending SIGTERM to processes under /mnt/stateful_partition/crouton/chroots/kali-rolling...
if anyone has a fix id greatly appreciate it
thank you in advance for your help