@ Marty for me the probleme is very simple : i chose a picture ,i have it full sice on the screen ,then i must clic you want use as wallpaper clic..,then it was completly zoom ,
A littel bit of sarcasme because you give à link ,and in this link you Say its normal that it was zoom because its android.....this seems to be not correct because it works on the other minix boxes.....
Here a picture with same wallpaper on minix 8h plus ,as you Can see its not zoom ,its full Size and its also perfect with u9h and x39
Same wallpaper on u22xj ,the u22xj seems to automaticly zoom every picture you use as wallpaper when you confirm use as wallpaper...and this with every picture résolution ,also with same picture résolution as tv résolution...
The other minix devices adapte automaticly the picture to have it in full screen ,indépending the résolution from the picture ...
When i chose a backround picture its ok full Size ,but when i confirm ,use ase wallpaper its zoom,so there must be something how works différent in the other minix boxes
Here a picture before i confirm use as background ,the picture is full Size ,perfect (u22xj)