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List: qemu-discuss
Subject: Re: [Qemu-discuss] "main-loop: WARNING: I/O thread spun for 1000 iterations" when playing audio
From: Aleksei <alex3kov () zoho ! com>
Date: 2016-09-25 15:01:02
Message-ID: 06a000cc-acf7-9ae3-80bd-acc49f3f7afa () zoho ! com
[Download RAW message or body]
If I understand ALSA correctly, not using dmix will cause
sound-producing applications to grab the sound card exclusively if it
doesn't support HW mixing. I would try it in any case, if only to
eliminate problems on the host side.
System-wide ALSA config is /etc/asound.conf, user-specific is
~/.asoundrc. The syntax is not intuitive, to say the least.
See here:
https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#Dmix
/--Regards, Aleksei/
------------------------------------------------------------------------
*From:* Holger Wünsche
*Sent:* Sunday, September 25, 2016 5:40PM
*To:* Aleksei
*Subject:* Re: [Qemu-discuss] "main-loop: WARNING: I/O thread spun for
1000 iterations" when playing audio
On 25 September 2016 15:57:23 CEST, Aleksei <alex3kov@zoho.com> wrote:
> Hi,
>
> I didn't have this issue, so here are my wild pointers :)
>
> Do you have pulseaudio on the host?
No I only use alsa and it is not installed.
> Have you tried other soundhw models ("qemu-system-x86_64 -soundhw help" will tell \
> you what's available).
Yes, I tried some and they did not fix the problem.
> What does your .asoundrc look like? Do you use ALSA's dmix?
As far as I can see dmix should not be used. (I might miss something, but I could not \
find any '*asound*' on my drive. Not in /etc/ nor in my home directory. Also it is \
not shown when I type aplay -lL)
> /--Regards, Aleksei/
Holger Wünsche
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<div id="smartTemplate4-template">
<p>If I understand ALSA correctly, not using dmix will cause
sound-producing applications to grab the sound card exclusively
if it doesn't support HW mixing. I would try it in any case, if
only to eliminate problems on the host side.</p>
<p>System-wide ALSA config is /etc/asound.conf, user-specific is
~/.asoundrc. The syntax is not intuitive, to say the least.<br>
</p>
<p>See here:
<a class="moz-txt-link-freetext" \
href="https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#Dmix">https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#Dmix</a><br>
</p>
</div>
<br>
<div class="moz-signature"><i>--Regards, Aleksei</i>
</div>
<br>
<div id="smartTemplate4-quoteHeader">
<hr><br>
<b>From:</b> Holger Wünsche<br>
<b>Sent:</b> Sunday, September 25, 2016 5:40PM<br>
<b>To:</b> Aleksei<br>
<b>Subject:</b> Re: [Qemu-discuss] "main-loop: WARNING: I/O thread
spun for 1000 iterations" when playing audio</div>
<pre wrap="">On 25 September 2016 15:57:23 CEST, Aleksei <a \
class="moz-txt-link-rfc2396E" \
href="mailto:alex3kov@zoho.com"><alex3kov@zoho.com></a> wrote: </pre>
<blockquote type="cite">
<pre wrap="">Hi,
I didn't have this issue, so here are my wild pointers :)
Do you have pulseaudio on the host?
</pre>
</blockquote>
<pre wrap="">No I only use alsa and it is not installed.
</pre>
<blockquote type="cite">
<pre wrap="">Have you tried other soundhw models ("qemu-system-x86_64 -soundhw \
help" will tell you what's available). </pre>
</blockquote>
<pre wrap="">Yes, I tried some and they did not fix the problem.
</pre>
<blockquote type="cite">
<pre wrap="">What does your .asoundrc look like? Do you use ALSA's dmix?
</pre>
</blockquote>
<pre wrap="">As far as I can see dmix should not be used. (I might miss \
something, but I could not find any '*asound*' on my drive. Not in /etc/ nor in my \
home directory. Also it is not shown when I type aplay -lL)
</pre>
<blockquote type="cite">
<pre wrap="">/--Regards, Aleksei/
</pre>
</blockquote>
<pre wrap="">
Holger Wünsche
</pre>
<br>
</body>
</html>
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