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Hello,
My setup: PC and Rpi (3b+) are both connected via hdmi to the tv.
Problem: CEC between rpi and the tv works only when the pc is powered on.
Why is in my case the running pc crucial for CEC? (Additionaly the TV is connected to a NVIDIA-GPU which dont support CEC at all)
Is there a way that the TV and RPI work standalone with CEC?
Any ideas?
LG
Dschogo
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Forgot to mention that the TV CEC discovery only lists the RPI (as KODI) when the pc is connected. If the pc is off the discoery list is empty.
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If you disconnect everything but the Pi from the TV and fully power down (at the wall, not just via power switches) both then restart the TV then the Pi, does it work then?
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Which OS/kodi are you running on the Pi? (Raspbian, LibreElec, OSMC or something else)?
I run LE on my Pi's, and when I first boot them I get notifications of both searching for CEC connection and achieving it.
Personally I don't know HDMI protocols in great depth so I can't say what the PC might be doing. All I can think of is to connect each item back in turn and confirm if it's the PC or the NVIDIA which is causing the issue (even if it doesn't have CEC), and whether swapping the connection ports on the TV around helps or not.
But others may be able to jump in here with more technical details or recommendations. But at least the Pi itself is working correctly.