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How to change GDM3 login screen background

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  How to change GDM3 login screen background Andrew Clark <ajfclark@gmail.com> - 2019-04-07 04:40 +0200
    Re: How to change GDM3 login screen background Curt <curty@free.fr> - 2019-04-07 10:40 +0200
      Re: How to change GDM3 login screen background Andrew Clark <ajfclark@gmail.com> - 2019-04-09 00:20 +0200
        Re: How to change GDM3 login screen background Curt <curty@free.fr> - 2019-04-09 09:20 +0200

#207088 — How to change GDM3 login screen background

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Hi,

I'm trying to update my gdm3 login screen background.

I followed the instructions here: https://wiki.debian.org/GDM :

Customizing the GDM appearance
GDM v3.0+ allows for some basic customization, such as changing the logo
icon, display background, and GTK theme. To do so:

Edit /etc/gdm3/greeter.dconf-defaults as root

Uncomment and/or modify the desired settings
Save and close the editor
Finally, run as root: dpkg-reconfigure gdm3

The command 'dpkg-reconfigure gdm3' will cause gdm to reload its
configuration upon the next logout or reboot.

Note: When changing the background image, the target file must be
world-readable.


But this did not work, I still have the default background.

Here's my greeter.dconf-defaults (other changes here have been picked up):

aclark@pleco 0 /etc/gdm3 $ egrep -v '(^#|^$)' greeter.dconf-defaults
[org/gnome/desktop/interface]
[org/gnome/desktop/background]
picture-uri='file:///usr/share/backgrounds/TNAwallpaper4K.jpg'
picture-options='zoom'
[org/gnome/login-screen]
logo='/usr/share/images/vendor-logos/logo-text-version-128.png'
disable-user-list=true
[org/gnome/settings-daemon/plugins/power]


The background exists and is world readable:

aclark@pleco 0 /etc/gdm3 $ ls -l /usr/share/backgrounds/TNAwallpaper4K.jpg
-rw-r--r-- 1 root root 2310969 Apr  3 10:34
/usr/share/backgrounds/TNAwallpaper4K.jpg


Running testing:

aclark@pleco 0 /etc/gdm3 $ cat /etc/debian_version
buster/sid


Checking gdm3 is actually running, not light dm or something:

aclark@pleco 0 /etc/gdm3 $ ps -ef | grep '[g]dm3'
root       942     1  0 11:24 ?        00:00:00 /usr/sbin/gdm3
aclark    2779  2756  0 12:05 tty2     00:00:00
/usr/lib/gdm3/gdm-wayland-session /usr/bin/gnome-session


gdm3 version:

aclark@pleco 0 /etc/gdm3 $ dpkg -l gdm3
Desired=Unknown/Install/Remove/Purge/Hold
|
Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=================================
ii  gdm3           3.30.2-3     amd64        GNOME Display Manager


What am I missing?

-- 
Cheers,

Andrew.

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#207090

On 2019-04-07, Andrew Clark <ajfclark@gmail.com> wrote:
>
> What am I missing?
>

It appears the wiki's wrong and has been wrong for quite a while now (if
not from the very start).

Maybe the following method might work (it seems like an incredible
rigamarole for such a trivial user customization, but there you go).

https://wiki.archlinux.org/index.php/GDM#Log-in_screen_background_image

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#207161

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Thanks curt, that works for me.

So the commentary in the comments in the source file supplied by the gdm3
package don't work, along with the instructions in the wiki page pointing
to them, should I log a bug?

On Sun., 7 Apr. 2019, 18:35 Curt, <curty@free.fr> wrote:

> On 2019-04-07, Andrew Clark <ajfclark@gmail.com> wrote:
> >
> > What am I missing?
> >
>
> It appears the wiki's wrong and has been wrong for quite a while now (if
> not from the very start).
>
> Maybe the following method might work (it seems like an incredible
> rigamarole for such a trivial user customization, but there you go).
>
> https://wiki.archlinux.org/index.php/GDM#Log-in_screen_background_image
>
>

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#207171

On 2019-04-08, Andrew Clark <ajfclark@gmail.com> wrote:
>
> Thanks curt, that works for me.
>
> So the commentary in the comments in the source file supplied by the gdm3
> package don't work, along with the instructions in the wiki page pointing
> to them, should I log a bug?
>

I don't know much about bug filing. I've heard of documentation bugs,
but never of an inherent source file commentary documentation bug?
Other clearer, more informed heads might chime in here.

The wiki, of course, being what it is (a wiki) is theoretically
modifiable by anyone (which means, if you have the time and courage,
you, I guess).

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