Screen start to switch on and off after a certain time

I am having an issue with the nano, i am powering the nano with an external power supply (i tried 2 different one but same result) so it give 5V 3A and the new one can give up to 10A (HMP4030).
And after a certain time that can go from 5 minutes to ~1hour the screen start to lose the signal and switch on and off.
I also added a jumper on J48 for the power not to be by USB.

If anyone is having the same issue and can help me solve this i would be grateful.


If you disable the power saving for monitor (you could set it through ubuntu GUI), will you see this issue?

hi AnotherBeginner,

Is this still an issue? Any result can be shared?