f42 default background not working

[François Patte]

Bonjour,

I upgraded to f42 from f40 using the dnf system upgrade, everything 
seems to be alright, except the default background which is missing on 
the logging screen (black) and also when users are logged (white).

I use lightdm and all files in /etc/lightdm and /usr/share/background 
seem to be correct....

What can I do?

Thank you.

F.P.

[George N. White III]

On Mon, Jun 2, 2025 at 10:10 AM François Patte 
wrote:
> Bonjour,
>
> I upgraded to f42 from f40 using the dnf system upgrade, everything seems
> to be alright, except the default background which is missing on the
> logging screen (black) and also when users are logged (white).
>
> I use lightdm and all files in /etc/lightdm and /usr/share/background seem
> to be correct....
>
> What can I do?

Use `journalctl` to look for relevant errors.  Maybe start by running
`journalctl --no-hostaname -b` in a terminal and
looking for relevant messages.   `man journalctl` provides lots of options
to select records by "priority", search strings,
etc.

Sometimes files are correct but selinux contexts are not.

[François Patte]

Le 02/06/2025 à 15:20, George N. White III a écrit :
> journalctl --no-hostaname -b

journalctl : option non reconnue (not known) '--no-hostaname'

[Patrick O'Callaghan]

On Mon, 2025-06-02 at 15:28 +0200, François Patte wrote:
> Le 02/06/2025 à 15:20, George N. White III a écrit :
> > journalctl --no-hostaname -b
>
> journalctl : option non reconnue (not known) '--no-hostaname'

It's a typo.

man journalctl:
...
       --no-hostname
           Do not show the hostname field of log messages originating from the local host. This switch has an effect only on the short
           family of output modes (see above).

poc

f42 default background not working [SOLVED]

[François Patte]

Le 02/06/2025 à 15:09, François Patte a écrit :
> Bonjour,
>
> I upgraded to f42 from f40 using the dnf system upgrade, everything 
> seems to be alright, except the default background which is missing on 
> the logging screen (black) and also when users are logged (white).
>
> I use lightdm and all files in /etc/lightdm and /usr/share/background 
> seem to be correct....
>
> What can I do?

In f40 the greeter config was:

background=/usr/share/backgrounds/default.png

When upgrading to f42 the greeter config is:

background=/usr/share/backgrounds/default.jxl

and the new file /etc/lightdm/lightdm-gtk-greeter.conf is installed as 
lightdm-gtk-greeter.conf.rpmnew

The same problem occurs with the default background for users but I 
don't know where are the config files...

If someone knows it, tell me!

F.P.