Display MoreInteresting. So maybe the Optiplex 3050 / Benfei adapter I am using are not the same LSPCon chipset?
Benfei adapter I have: https://www.amazon.co.uk/gp/product/B07…e?ie=UTF8&psc=1
The way I tried Chewitt's build was to create a standard LibreElec bootable USB and then copied the files from the tar onto the USB stick. I definitely get his version and name on startup in the top right hand corner, so pretty certain I've done that part right.
Just to be sure, I applied the tar file using the .update folder. However, got the same result. I've attached below the dmesg output and lspci output. Let me know if there's any other useful info I can pull.
dmesg:
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lspci -vvv:
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So the adapter I tested with is using a newer VMM7100 HDMI 2.1 converter and yours is an HDMI 2.0 adapter so they are definitely not the same chipset. I believe Sky42 has Megachips HDMI 2.1 converters. When I get time I will try with the much older Paradetech PS175 HDMI 2.0 converter which is built-in to the motherboard. Before this neither could do HBR audio but from memory the PS175 also had trouble with HDR which the VMM7100 based adapter does not.
Your problem on the surface sounds identical. You can check the build in System -> Librelec, Chewitt is mentioned in the build name if you have the right one.