I have Dell U2414H monitor which has two HDMI ports. The problem is RPi works only when connected to second HDMI port, while I had no luck trying to make it work on first port.
When I connect RPi to first port, I get blank screen and monitor goes into sleep mode/power saving mode.
I think it's not the problem with monitor, because when I connect my laptop to either of the ports it works flawlessly. Also RPi works fine when connected to two different TVs.
It's strange to me, because it's:
- not RPi problem, because RPi works on 2 different TVs and one of the HDMI ports of monitor
- not monitor problem, because when I connect laptop then both HDMI ports work
- not cable problem
How can I diagnose this issue and possibly fix it?