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Re: [Qemu-devel] Linux KVM, Windows 7 guest choppy sound
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] Linux KVM, Windows 7 guest choppy sound |
Date: |
Sat, 08 Sep 2012 12:53:47 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2012-09-07 18:09, Erik Lotspeich wrote:
> Hi,
>
> I apologize if this isn't the right venue for this message, but this
> mailing list seems a bit more active than qemu-discuss.
>
> Background:
> I am running OpenSUSE 12.1. I fixed audio issues in VM guests by setting
> the following in qemu.conf:
>
> vnc_allow_host_audio = 1
>
> I also set user= and group= to allow qemu-kvm to run as the same user as
> I am logged in as. This allowed qemu-kvm to send audio to pulseaudio.
>
> My issue:
> I am using the ICH6 virtual audio driver in my VMs. In my Linux VMs, the
> sound works perfectly without any issues. In my Windows 7 VM, the sound
> works with the exception of static and choppiness in the audio. Has
> anyone else seen this or have any ideas for a fix?
Known issue, likely unfixable in QEMU due to hard-coded constraints of
the driver Windows uses (too small playback buffers).
I gave up on hda, I'm happily using a passed-through USB headset now.
Another known-to-work alternative is PCI passthrough of the host sound
hardware. However, both approaches are no option when the host is out of
reach.
What seems to work better - but is lacking input support - is usb-audio.
Maybe worth a try when you don't need a microphone.
Jan
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