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[BUG] HDA Intel PCH, HDMI , HDA Intel PCH, ALC886 Digital, no IEC958 / HDMI output/passthrough to AVR

ALSA versions 1.0.28

Kernel Driver versions 3.12.40

Partly FIXED in Longterm Stable Kernel 4.19.324 and using HDMI DEV 1 instead of 0.

2 CH PCM HDMI to AVR works now but AC3/DTS passthrough still not or is not recognized by AVR or some wrong AES setting but iec958 optical out AC3/DTS output to AVR works.

New BUG: No more 5.1 Analog Output on the CM106 USB Box if AC3 stream is selected.

Your ALSA information is located at http://alsa-project.org/db/?f=5ef8b56450583ba8afbcc705afc02228da4a3072

y tom

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Hardware:

DFI Mainboard MB330-CRM

https://www.dfi.com/de/product/index/273#specification

Reproducible Always

Steps to reproduce and full report:

https://www-vdr--portal-de.translate.goog/forum/index.php?thread/136519-gel%...

Output of alsa-info.sh is here

http://alsa-project.org/db/?f=fc4734deddd9a92331692bf94b15cf84b7722cd4

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Software crosscheck with CM106 USB Soundbox iec958: works OK.

Where to start in the drivers source code to fix it?

y tom