I have followed the instructions for testing/chancing the video mode on the PS3 YDL setup. Although it only changes in the text mode, when I switch back to the GUI mode it hasn't changed.
So I tested Full Screen and 1080P - all seemed well in Text Mode, but when I change on the startup (yaboot.config) file, everything starts OK but the GUI is like 3 screens joined together with only the bottom right as my main display...
Any suggestions please?