[alsa-devel] intel 8x0 ALSA driver in virtualbox - choppy sound

Jaroslav Kysela perex at perex.cz
Fri Aug 13 17:19:10 CEST 2010

On Fri, 13 Aug 2010, Lex F wrote:

> Dear all
> I am having problems with getting sound running well in Arch Linux
> guest (VirtualBox 3.2.8), the host is OS X Snow Leopard. The problem
> is that the sound is very choppy. I've checked around VirtualBox and
> Arch forums and it seems that some others experience these problems as
> well yet I could not see anyone sufficiently skilled to debug this
> paying attention. I think there is a problem with either VirtualBox
> implementation of the sound card or a bug in ALSA driver for that card
> because I have sound running just fine in VMWare Fusion (using es1371
> (?) driver), so the host system definitely is fast enough for decent
> sound quality.
> I would like to offer my help with identifying the cause of the
> problem and testing solutions if the need be.
> I've attached my alsa-info output for your reference. Please let me
> know if there is anything else I could try to help.
> I am very keen to help but I don't know how.

http://www.alsa-project.org/main/index.php/XRUN_Debug is a good start to 
see if the virtual machine does receive interrupts in the right time.


Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.

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