Post count: 1827

HDMI or composite ?

What is your default video resolution ?

If you have the latest retropie-setup script, please try

sudo ./ runcommand
sudo ./ stella configure

and try again. if you get a black screen then go to launch it, but press x or m on the keyboard a few time before it loads and you should get a video output settings. you could try setting it to your native screen resolution. You should probably then do

sudo ./ dispmanx

and turn on dispmanx sdl for this emulator. it should then nicely scale up to your native resolution.