Thanks for the reply. This change is happening all the time regardless of if I have anything plugged in or not.<div><br></div><div>I'm willing to accept that I might have a hardware problem. I don't currently have a working windows to try it out under a different OS. Is there a way I could debug this issue further, e.g., could I somehow check the jack detection? Could I see the hardware events in some log? What driver (kernel module?) is responsible for producing those events? Would it be possible to try another driver?</div>
<div><br></div><div>Here's what hardware lister says I have:</div><div><div>product: 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086:1C20]</div><div>vendor: Intel Corporation [8086]</div><div>
bus info: pci@0000:00:1b.0</div><div>version: 05</div><div>width: 64 bits</div><div>clock: 33MHz</div><div>capabilities:</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Power Management,</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Message Signalled Interrupts,</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>PCI Express,</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>bus mastering,</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>PCI capabilities listing</div>
<div>configuration:</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>driver: HDA Intel</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>latency: 0</div><div>resources:</div><div>
<span class="Apple-tab-span" style="white-space:pre"> </span>irq: 66</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>memory: f6620000-f6623fff</div><div><br></div><div>Thanks.</div><br><div class="gmail_quote">
On Fri, Dec 2, 2011 at 2:20 AM, David Henningsson <span dir="ltr"><<a href="mailto:david.henningsson@canonical.com">david.henningsson@canonical.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On 12/02/2011 04:54 AM, Tony Bernardin wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Sorry if I'm posting this question in the wrong list. I've been trying<br>
to search for this issue, but have been unsuccessful so far with not<br>
even a hint at what I could try to get to the bottom of this. I'm not<br>
very familiar with the sound system.<br>
<br>
The symptom: regular hiccup in the sound output.<br>
<br>
What I've found:<br>
launching the pulseaudio daemon with -v showed that it is constantly<br>
changing the port of the sync:<br>
</blockquote>
<br></div>
Changing port when you plug something in/out is a part of my jack detection patches, and implemented in Ubuntu 11.10.<br>
<br>
Is it changing even though you're not actually plugging headphones in and out repeatedly? If so, I suspect that your hardware might be broken.<span class="HOEnZb"><font color="#888888"><br>
<br>
-- <br>
David Henningsson, Canonical Ltd.<br>
<a href="http://launchpad.net/~diwic" target="_blank">http://launchpad.net/~diwic</a><br>
</font></span></blockquote></div><br></div>