Display 3.5inch power off/on

Volumio Information

Volumio Version: 2.884
Hardware: pi4b
DAC: USB Denon PMA 1600ne

Hi at all… This is my first “project”.
All it’s good but I think there’s a lot of little problems… Please help!

1 the power on is very slowly, it’s normal?
2 if power on the volumio and later power on my dac i cannot listen any audio! I’ll reboot the volumio and go well.
3 I cannot select from my display the icon because there on this the bottom play line.
4 can I power on/off only display or suspend the volumio from an external button?

Thanks :smiling_face:

See this video from YouTube for all my problem.