[coreboot-gerrit] Change in coreboot[master]: mainboard/asus/p8x7x-series: Add new variant P8Z77-M

[Keith Hui (Code Review)]

Attention is currently required from: Martin Roth - Personal, Paul Menzel, Angel Pons, Arthur Heymans.
Keith Hui has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/38988 )

Change subject: mainboard/asus/p8x7x-series: Add new variant P8Z77-M
......................................................................

Patch Set 20:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/38988/comment/77322339_f5f1da66 
PS20, Line 32: 6ch analog audio out
> Interesting, what doesn't work?

Since you asked, I tested again. I did get a control to "switch" it into 4ch and 6ch analog modes in alsamixer. I then used speaker-test from alsa-utils with two set of wired speakers connected per mainboard manual (front to lime, rear to blue). I get sound out of both set of speakers with front channels, effectively no sound from rear channels, and absolute silence from LFE. Totally doesn't sound right.