ok @oiboy86 this is looking like we are getting to the root cause… and the good news it looks like its configuration/monitor rather than anything more complex
for others… it looks like Oiboys issue stem from having to change the the resolution in uEnv.txt to 1920x1080M@60 to get his monitor to work
this cannot be done with OTC, the otc_installer sets it to 1280x720@60, and it must stay at this…
ETC (and so OTC) is hard coded to do 720p (1280x72) due to CPU constraints, higher resolutions = higher cpu.
this means two things:
a) you cannot change the resolution in uEnv.txt… it must be left at 1280x720@60
b) your monitor/tv/projector must support 720p
so dont change uEnv.txt after you have run OTC_Installer
try using startx to see if your monitor works at this resolution.
and try running OTC without anything attached to the HDMI, if you see the OLED display the patch parameters, then you can see OTC is running correctly, and it is your monitor that is having issues.