MiSTer FPGA Forum

I just upgraded my TV to an 85" Samsung q85n and I am getting weirdness when the Mister is attached directly to one of my HDMI ports or even indirectly through my pioneer receiver HDMI port. I spent hours trying to get my ARC working again and narrowed it down to the mister being attached. I removed all HDMI connections from everything but the receiver and it works fine. Once the mister is attached via HDMI powered off I can't work volume anymore. If i reset the receiver or TV the arc audio is dead. It's definitely the mister and doesn't matter what HDMI port it is attached to. Things start working again once I unplug the mister hdmi and power cycle the receiver. Am I crazy? It's not like I am plugging the mister into the ARC audio port. I get all ports support device control by why would this mess with audio.

The MiSTer can be picky about HDMI cables, even per display in my experience. Have you tried other cables?

I suppose it is the well known problem of CEC broken on the DE10-nano. I am no expert but this kind of problem has been discussed many times on the forum.

jca wrote: ↑Fri Apr 21, 2023 8:46 pm

I suppose it is the well known problem of CEC broken on the DE10-nano. I am no expert but this kind of problem has been discussed many times on the forum.

I just found the issue. I'll try removing shoving pin 13 in on an HDMI cable and if I fail will buy the adapter. That is a weird problem that has been making me tear my new TV apart for days.

The HDMI on the DE-10 has issues the CEC is broken and the HDMI is not isolated so the board can slightly power from just HDMI power.

Though it was never designed to integrated into a front room AV setup

fwiw, I have my MiSTer connected in my living room using ARC and everything is working as expected. Setup is MiSTer connected to a Sony X900H with ARC from the Sony to a Yamaha RX-602S receiver. This worked without the CEC filter, although without the filter CEC would break completely as expected due to the known issue with the CEC pin on DE-10 Nano.

Take small pliers, rip out pin 13. I've done this to a LOT of cables for Mister use

Use this, problem solved. I had to use it to fix my Sonos Arc issues.

https://www.amazon.co.uk/LINDY-HDMI-Les ... YXRm&psc=1