BionicDog64 On startup-Wallpaper offset 40% (Simi-Solved)

[PeteAir]

I made a button on the desktop that I push to restore nitrogen and it fixes it. I have read that 18.04 has problems with docking stations like mine.

I have been testing BionicDog64 for a couple of weeks now and this is the only minor problem. On startup the wallpaper is offset and I have to click apply in set wallpaper to fix it. Any suggestions?
pete

This is on a Dell latitude E6400 with nvidia graphics, on a Dell docking station with acer 22" monitor 1680/1050 @60.

This is a frugal install. Also on this laptop is Win10, Tarh64/ Xenial64 and BionicPup64. All of the pups work perfect, BionicDog is the only install that shows this glitch. I feel this is due to the docking station, cause the BionicDog cd would not boot until I removed the lappy from the dock to do the install.

I pulled the laptop off the dock and BionicDog boots fine, so it doesnt like the dock. I can nitrogen --restore and it fixes the screen.
pete