On/Off Switch Pad Working Bad

[Xabaras76]

Thanks xalius for your answer,

but now I don't know why the button is working. I have try another image (dietpi )
And another thing I have done is to power on the board with no sd card, then I kept pressed the power button to shutdown the system.

And from then the button is working . I mean that if I press it the board power on and keep to be on.(no shutdown after few seconds )

The only thing I've notice is that I have to keep the button pressed for more than one second.

Now I'm installing the dietpi image so I can't power the system off , but after I will try again with the ubuntu image I have used at the beginning.

I wish everybody a great day.

Regards

Filippo