Bug#769796: systemd: update-rc.d lightdm disable does not work

[intrigeri]

Control: tag -1 + moreinfo

Hi Samuel,

Samuel Thibault wrote (16 Nov 2014 14:50:08 GMT) :
> I want to have lightdm installed on my system, but not automatically
> started at boot.  To achieve that, I used

> update-rc.d lightdm disable

> but lightdm still gets started at boot.

I see that lightdm.postinst reads:

  # set default-display-manager systemd service link according to our config
  if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" -a -d /etc/systemd/system/ ]; then
    SERVICE=/lib/systemd/system/$(basename $(cat "$DEFAULT_DISPLAY_MANAGER_FILE")).service
    if [ -e "$SERVICE" ]; then
      ln -sf "$SERVICE" /etc/systemd/system/display-manager.service
    else
      echo "ERROR: $SERVICE is the selected default display manager but does not exist" >&2
    fi
  fi

... which leads me to think that as long as the default DM is lightdm,
even if one disables the lightdm service, a display-manager service is
set up and will start. If my guess is correct, then that's a bug in
lightdm (or in the display-manager logic, perhaps other DMs have the
same), not in systemd.

What's the output of these commands?

  # systemctl status display-manager.service 
  # systemctl status lightdm.service 

Cheers,
-- 
intrigeri