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Date: Tue, 13 Dec 2011 14:57:01 +0000
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From: Stefan Hajnoczi <stefanha@gmail.com>
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Subject: Re: [Qemu-devel] (no subject)
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To: Erik Lotspeich <erik.lotspeich@gmail.com>
Cc: qemu-devel@nongnu.org

On Tue, Dec 13, 2011 at 12:55 PM, Erik Lotspeich
<erik.lotspeich@gmail.com> wrote:
> On Tue, Dec 13, 2011 at 2:06 AM, Stefan Hajnoczi <stefanha@gmail.com> wro=
te:
>> Please post your QEMU command-line (you can find it with "ps aux | grep
>> qemu").
>>
>> If you are running through libvirt/virsh/virt-manager there may be
>> permission requirements since the guest can be set to run as an
>> unprivileged user without access to audio devices. =A0 That's just a gue=
ss
>> but worth looking into.
>
> Here's my qemu command line:
>
> qemu =A0 =A0 =A05294 19.6 25.7 2444808 2101252 ? =A0 =A0 Sl =A0 06:47 =A0=
 1:00
  ^^
Libvirt is running the qemu-kvm process as user 'qemu'.  Does that
user have the necessary groups (e.g. 'audio')?

On my system the unprivileged user is called 'libvirt-qemu' and here's
what I get:

$ id libvirt-qemuuid=3D105(libvirt-qemu) gid=3D112(kvm) groups=3D112(kvm)

You may need to add 'qemu' to group 'audio' or whatever is necessary
to let it access ALSA devices or talk to a sound daemon.
Stefan