gdm3 greeter banner question

From	"Malmberg, Breen" <bemalmbe@lanl.gov>
Newsgroups	linux.debian.user
Subject	gdm3 greeter banner question
Date	2016-11-29 23:30 +0100
Message-ID	<sIZ4t-60M-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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I am attempting to display a lengthy text warning banner, in the GUI, before the user logs in, while also having the display-user-list=false option set.


How do I do this? When you set the display-user-list=false option it appears to also disable the warning banner text display area, at login.


I have also attempted to change the login background (wallpaper?), but as far as I can determine, no such option exists in gdm3 and the only thing you can change is the login logo, which is just a tiny little thing on the login screen and inadequate for my purposes.

I am using Debian 8 (jessie)


Please advise

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gdm3 greeter banner question "Malmberg, Breen" <bemalmbe@lanl.gov> - 2016-11-29 23:30 +0100
  Re: gdm3 greeter banner question Liam O'Toole <liam.p.otoole@gmail.com> - 2016-11-30 10:10 +0100
  Re: gdm3 greeter banner question Brian <ad44@cityscape.co.uk> - 2016-11-30 23:40 +0100
    Re: gdm3 greeter banner question "Malmberg, Breen" <bemalmbe@lanl.gov> - 2016-12-01 00:50 +0100

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