Dmitrii, try to do what Riley Freeman did set Left speaker to chan3 and Right to chan4 while woofer to 6? try other if didn't work
Cross fingers, reboot and it's work on my spec! Thank you so much!!! Only 8 channel output in audiomidiutility and no input I have 2.1 audio speakers. I not tested ext. module and i hope to this will work. What about remote control and front row, guys?
OK I got it at last!
Just selected stereo in speaker setup and set left speaker to channel 3 and right to 4 (in all my frantic clicking I didn't read that you can click on the speaker icon to hear a test sound. duh...). I get sound but it degrades within a couple of minutes. Still, that's a known bug right now. But it works!
Ah yes, to save yourselves from Restarts Hagar pointed out a temp solution
OPEN TERMINAL and type the following (which should give you another 10 minutes.... lol)
(if at this point it says "failed" just repeat the command above)