No sound on Intel N100 via Display Port

I have a Marantz AVR and a Beelink S12 outputting to a LG 4K TV. I have HD Audio drop outs via HDMI (along with many others). I bought a USB-C Display port to HDMI adapter in April, which eliminated the audio dropouts. The adapter died a couple months ago so I switched back to regular HDMI and put up with the glitches. I finally bought another adapter last week (the exact same one) however now I have no sound whatsoever. No files work, no 2.0, no 5.1, no DTS, no ATMOS, etc. Absolutely nothing.

I made sure the output device is set to

m_deviceName      : hdmi:CARD=PCH,DEV=0                                                                         
2024-12-23 09:55:54.648 T:1263     info <general>:         m_displayName     : HDA Intel PCH                                                                               
2024-12-23 09:55:54.648 T:1263     info <general>:         m_displayNameExtra: MJI marantz-AVR on DisplayPort #0                                                           
2024-12-23 09:55:54.648 T:1263     info <general>:         m_deviceType      : AE_DEVTYPE_HDMI                                                                             
2024-12-23 09:55:54.648 T:1263     info <general>:         m_channels        : FL, FR, LFE, FC, BL, BR, BC, BLOC, BROC                                                     
2024-12-23 09:55:54.648 T:1263     info <general>:         m_sampleRates     : 32000,44100,48000,88200,96000,176400,192000                                                 
2024-12-23 09:55:54.648 T:1263     info <general>:         m_dataFormats     : AE_FMT_RAW,AE_FMT_S32NE,AE_FMT_S16NE,AE_FMT_S16LE,AE_FMT_RAW                                
2024-12-23 09:55:54.648 T:1263     info <general>:         m_streamTypes     : STREAM_TYPE_AC3,STREAM_TYPE_DTSHD,STREAM_TYPE_DTSHD_MA,STREAM_TYPE_DTSHD_CORE,STREAM_TYPE_DT
2024-12-23 09:55:54.648 T:1263     info <general>:

Here is the pastekodi output: https://paste.libreelec.tv/glorious-muskrat.log

Any ideas?

Well, passthrough worked perfectly via HDMI (other than the drop outs) and my first DP to HDMI adapter, however it doesnt seem to work with the new one (which is supposedly identical). I did get non passthrough sound to work yesterday, although I don't know what I did differently.

For anyone else that finds this thread in the future, I deleted and recreated EDID data and now I magically have passthrough sound again. And best of all, no sound crackles on 2160p 23.976hz HD audio content!

I thought I had done that already (several times, even), but apparently not. No audio delay via DP; previously had .125 seconds on HDMI.

I spoke too soon. I rebooted the box and dont have any sound at all anymore. No analog, no passthrough.

https://paste.libreelec.tv/easy-glowworm.log

Thanks for the suggestion, however that did not make any change.

I also bought a highly recommended USB C DP to HDMI adapter and it didnt seem to make a difference either.

To add even more strange behavior to the mix, I rebooted the PC, opened a movie, and both passthrough and analog were working. I stopped the movie, tried 2 different ones and got no sound on either. I reopened the first movie whose sound worked, and got nothing. No passthrough or analog. Here is a log of that: https://paste.libreelec.tv/neutral-fowl.log

FWIW, I have 2 of these small Beelink PCs, I just tried the other one and it does the exact same thing over DP.

I gave up and switched back to HDMI