maybe maybe you could post an example of what you did. Or even your configuration files. That way future people looking for this will have a solution instead of just another thread with a question. Just a suggestion
I hooked up a old composite to vga adapter I had and used that to boot to swiss using a vga monitor. Swiss was losing sync on my ossc so I couldn't save or change the settings since I just got a black screen. Using the vga monitor I changed the swiss menu resolution to 576i instead of auto and now the ossc doesn't lose sync anymore so I can use the gcloader finally.