@Kartman Hello, I cannot find a good scanline reproduction with ADVMame. It does not use shaders, only overlays. Tried to make a few scanline overlays and had no luck. There are video options for scanlines, but I could not find anything that looked as good as shaders do.
@mitu I've got it working now, I had a typo in my file, I had missed out the / before dev/input/. Schoolboy error but sorted now. Many thanks for the pointers and your help. Working between my PC and the cabinet is quite tricky. I'll need to get SSH sorted out so I can do the edits from the PC direct.