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Date:      Tue, 12 Jan 2010 03:16:31 +0000
From:      Paul Wootton <paul@fletchermoorland.co.uk>
To:        freebsd-emulation@freebsd.org
Cc:        current@freebsd.org
Subject:   Audio levels in Virtualbox 3.1.2
Message-ID:  <4B4BE98F.1000500@fletchermoorland.co.uk>

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Hi,
I have just updated to VirtualBox 3.1.2 and have noticed the audio 
levels seem ALOT lower than the previous version (3.0.51 from the ports 
tree).
At first I thought that there was no audio at all until I turned the 
speakers up by about 30%
I tried running XMMS on the BSD host and the audio levels are indeed 
VERY different (with BSD being ALOT louder)

Has anyone else seen this?

The host is
demophon# uname -a
FreeBSD demophon.fletchermoorland.co.uk 9.0-CURRENT FreeBSD 9.0-CURRENT 
#28 r202126: Tue Jan 12 02:41:53 UTC 2010     
paul@demophon.fletchermoorland.co.uk:/usr/obj/usr/src/sys/DEMOPHON  amd64

demophon# more sndstat
FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64)
Installed devices:
pcm0: <HDA ATI R6xx HDMI PCM #0 HDMI> at cad 0 nid 1 on hdac0  [MPSAFE] 
(1p:1v/0r:0v channels simplex)
pcm1: <HDA Realtek ALC885 PCM #0 Analog> at cad 2 nid 1 on hdac1  
[MPSAFE] (1p:2v/1r:1v channels duplex default)
pcm2: <HDA Realtek ALC885 PCM #1 Analog> at cad 2 nid 1 on hdac1  
[MPSAFE] (1p:1v/1r:1v channels duplex)
pcm3: <HDA Realtek ALC885 PCM #2 Digital> at cad 2 nid 1 on hdac1  
[MPSAFE] (1p:1v/1r:1v channels duplex)

demophon# sysctl -a | grep snd
...
hw.snd.default_unit: 1
...


The guest is Windows Vista using the OSS Driver and ICH AC97 options


Cheers
Paul



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