The dirty way to do it would be to rename the backdrops folder to oldbackdrops and create a new folder named backdrops that contains only your new wallaper with the same name as the currently default wallpaper. I'm not sure if series point upgrades would add the old wallpapers back in or not though. The new wallpaper must be a .png file the same pixel dimension as the old one since the default is named that way. The problem is since the wallpaper in XFCE can be accessed from any image file on the system DE tinkerers could still replace it.
You might be better off to just brand the ligthdm login screen and allow the users to use whatever wallpaper they want. Other options are auto scripts at the end of boot (after Xorg starts), or conky with which you could brand no matter what wallpaper was selected.
Otherwise full boat you need to add a package and a license for/with the brand and then use OEM install which currently is unavailable.Kiosk mode could make the wallpaper persist but other Lite apps would be unavailble like updates, tweaks, and software manager which could be automated similar to an immutable methodology but what happens then when there's a problem?
TCÂ
You might be better off to just brand the ligthdm login screen and allow the users to use whatever wallpaper they want. Other options are auto scripts at the end of boot (after Xorg starts), or conky with which you could brand no matter what wallpaper was selected.
Otherwise full boat you need to add a package and a license for/with the brand and then use OEM install which currently is unavailable.Kiosk mode could make the wallpaper persist but other Lite apps would be unavailble like updates, tweaks, and software manager which could be automated similar to an immutable methodology but what happens then when there's a problem?
TCÂ
All opinions expressed and all advice given by Trinidad Cruz on this forum are his responsibility alone and do not necessarily reflect the views or methods of the developers of Linux Lite. He is a citizen of the United States where it is acceptable to occasionally be uninformed and inept as long as you pay your taxes.