Intel Alder Lake 2160p @ 23.976 Hz passthrough HD Audio dropouts (i7-1270p/N100)

    Quote from smp

    CE does not use 12-bit for 4K/24. Intel does.

    Oh well. Intel could at least point us which AVR it used for testing (if any). At the very least it would serve as a starting point for us to begin bothering Denon/Marantz about it.

    Quote from w46n3r

    Oh well. Intel could at least point us which AVR it used for testing (if any). At the very least it would serve as a starting point for us to begin bothering Denon/Marantz about it.

    Go ask them then. I doubt they are using an AVR though, and it shouldn't matter what brand (or whether one is used) as the issue is unlikely to be related to the HDMI display device and more likely to be related to DP to HDMI converter hardware/firmware or some issue or inefficiency in the driver that results in video+audio requiring more bandwidth on the HDMI connection than the current chain provides, resulting in audio dropouts.

    Quote from w46n3r

    Oh well. Intel could at least point us which AVR it used for testing (if any). At the very least it would serve as a starting point for us to begin bothering Denon/Marantz about it.

    I went to an AMD box from an Intel box and problem solved. It wasn't my preferred approach but I got tired of waiting. The Intel boxes I have (NUC 8i7BEH and N100) both work fine with my Yamaha AVR as long as I don't use passthrough audio.


    Jeff

    Quote from jbinkley60

    I've been watching this thread for a long time and have had an Intel NUC (8i7BEK)

    I back catching up on progress as I just bought another Alder Lake NUC.

    The previous one has the software ‘fix’ to limit output to 10bit. Does using the Thunderbolt port fix the audio glitch on Alder Lake?

    I had (and still have) a couple of NUC8s but I don’t recall having any Audio dropouts after updating the HDMI firmware on those. Maybe I’m wrong… (I have Denon AVRs)

    Ok, I found a clip, I got audio drop outs over HDMI, my GMKTec G2 also has Displayport and that with an active DP 1.4 to HDMI 2.1 adapter worked fine with no drop outs. I have a separate issue though where I get no display (over hdmi or dp) if going via the Denon amp unless I unplug and replug a few times or boot to the bios, but I've not really found a pattern, sometimes I get the boot logo and then lose picture, sometimes I get no picture at all so that's a show stopper for me so not sure where to go from there. I only get it with the Denon and not via the tv direct but that makes it unusable for me even with the Displayport work around, I can't find talk of others having the same though.