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From: Jon <iroquoi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: qemu/kvm seems to take ALSA all for itself?
Date: Tue, 22 May 2007 07:04:59 +1000	[thread overview]
Message-ID: <20070521210459.GA5594@localdomain> (raw)
In-Reply-To: <64F9B87B6B770947A9F8391472E032160BE40BE9-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>

On Mon, May 21, 2007 at 08:37:48AM -0700, Shahar Frank wrote:

> You have to make QEMU use ALSA as your sound system and specify a 
> mixer device for input and output. This can be done using some 
> environment variables that should be set before the qemu binary is 
> run.

>From the ALSA wiki:

"For ALSA 1.0.9rc2 and higher you don't need to setup dmix. Dmix is 
enabled as default for soundcards which don't support hw mixing."

I've found this to be the case on my laptop, where I use:

export QEMU_AUDIO_DRV=alsa
export QEMU_AUDIO_DAC_FIXED_FREQ=48000
export QEMU_AUDIO_ADC_FIXED_FREQ=48000
export QEMU_ALSA_DAC_BUFFER_SIZE=16384

Buffer size is very important, else it crackles and pops for me.

Now if only sound could survive a loadvm/savevm it'd be perfect. :-)

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  parent reply	other threads:[~2007-05-21 21:04 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-21 15:37 qemu/kvm seems to take ALSA all for itself? Shahar Frank
     [not found] ` <64F9B87B6B770947A9F8391472E032160BE40BE9-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-05-21 21:04   ` Jon [this message]
2007-05-23 12:34     ` Avi Kivity
     [not found]       ` <465434DB.2040103-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-23 13:15         ` David Abrahams
     [not found]           ` <87abvv4r6v.fsf-2bi8v6C3s58ZC2cDDG0gXw@public.gmane.org>
2007-05-24  6:55             ` Avi Kivity
2008-05-01 19:50     ` David Abrahams
2008-05-02 10:19       ` Avi Kivity
2008-05-02 16:38         ` David Abrahams
  -- strict thread matches above, loose matches on Subject: below --
2007-05-21 14:29 David Abrahams
     [not found] ` <87ps4umerx.fsf-2bi8v6C3s58ZC2cDDG0gXw@public.gmane.org>
2007-05-21 14:37   ` Avi Kivity
2007-05-23  2:37     ` David Abrahams
     [not found]       ` <87zm3wcliz.fsf-2bi8v6C3s58ZC2cDDG0gXw@public.gmane.org>
2007-05-23 10:05         ` Andreas Hasenack
2007-05-23 12:28         ` Avi Kivity

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