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Date:      Sun, 24 Jan 2010 01:48:08 +0300
From:      Mikle Krutov <nekoexmachina@gmail.com>
To:        Alexander Motin <mav@freebsd.org>
Cc:        freebsd-multimedia@freebsd.org
Subject:   Re: 5.1-channel sound on 8-STABLE, snd_hda
Message-ID:  <884554e61001231448s526e01c0r3a3b8ff3b0cd0d5a@mail.gmail.com>
In-Reply-To: <4B5B66A3.4010200@FreeBSD.org>
References:  <1264274586.00210659.1264262402@10.7.7.3> <4B5B66A3.4010200@FreeBSD.org>

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So, i've already configured it for playing real 5.1 sound with real
5.1 sound files, but i've got no duplication of sound with stereo
files - but i want it (they've sounded better with my rear &
sub-speakers, even through they are not 5.1). Could i somehow set it,
not globally, but only for some applications? What man page i should
refer to?

2010/1/24, Alexander Motin <mav@freebsd.org>:
> Hi.
>
> Mikle Krutov wrote:
>> I've got MSI mb 760GTM-P33 with ATI hd audio chip (pciconf shows '
>> device     = 'IXP SB600 High Definition Audio Controller'').
>> 5.1 sound worked on 8.0-RELEASE (sound was on every channel, but i
>> could not change vol per-channel, only globally), and after updating
>> to -STABLE - i've got only 2 channels working.
>> Any ideas about that?
>
> Previously you had 2 channels of stereo playback duplicated to every
> channel pair of your 5.1 system. Now real multichannel support added to
> snd_hda, so all excessive duplication was removed.
>
> Now you should just configure vchans for your speakers setup by setting
> dev.pcm.X.play.vchanformat sysctls and you will get _real_ multichannel
> sound.
>
> --
> Alexander Motin
>



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