unlocking background

[Piscium]

On Sat, 1 Aug 2020 at 09:46, Piscium <groknok at gmail.com> wrote:

> I have two PCs with similar configurations:
> Arch Linux
> lightdm with background image set
> XFCE session
> openbox as window manager
> xfdesktop not installed
> feh to set the background
> xfce screensaver
>
> Here is the puzzling thing: in one of the PCs when I unlock the
> background is the image I have configured (Arch wallpapers) and in the
> other PC the background is greyish blue, that is, the wallpaper I
> configured is not shown.
>
> Any ideas about what could cause this difference?

I have still not found the reason for the difference. It seems to
affect almost nobody. I spent some time googling and only found one
instance of someone talking about the same problem as I have: a Ubuntu
user in June, and apparently he has not found a solution either.

https://askubuntu.com/questions/1252629/xfce4-screensaver-change-lock-screen-background

One thing I forgot to mention in my description above is that the PC
where the wallpaper is displayed as expected has Intel graphics and
three monitors attached, whereas that where I get the dark blue-gray
background has Nvidia graphics with the proprietary driver and two
monitors. I don't think how this could have an effect though.

Any ideas of how I could investigate this?