Pops/Crackles Messing up my audio...

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----- Original Message -----
> Hi,
> 
> Hi,
> 
> I was hoping I could get some help troubleshooting some audio quality
> issues I am running into.
> Specifically, I am getting a lot of *pops/crackles* when I play audio
> files. It shows up when I
> move from 2-channel to 4/5 channel audio (via pauvcontrol) - I am
> using a USB X-FI sound-card with
> the Meego IVI.
> 
> I have tried changing the resample method (going from ffmpeg to
> high-quality) and setting tsched=0,
> neither making any noticeable difference.
> 
> The only things I saw in /var/log/messages that seemed relevant was:
> messages:Aug 6 16:59:26 localhost pulseaudio[570]: alsa-sink.c: ALSA
> woke us up to write new data to the device, but there was actually
> nothing to write!
> messages:Aug 6 16:59:26 localhost pulseaudio[570]: alsa-sink.c: Most
> likely this is a bug in the ALSA driver 'snd_usb_audio'. Please report
> this issue to the ALSA developers.
> messages:Aug 6 16:59:26 localhost pulseaudio[570]: alsa-sink.c: We
> were woken up with POLLOUT set -- however a subsequent snd_pcm_avail()
> returned 0 or another value < min_avail.
> 
> And this was spout out of dmesg
> [ 21.857184] ALSA sound/usb/mixer.c:2110: status interrupt: c0 00
> [ 21.897058] ALSA sound/usb/mixer.c:2110: status interrupt: c0 00
> [ 21.961062] ALSA sound/usb/mixer.c:2110: status interrupt: c0 00
> 
> I have already eliminated the speakers and the amp (played music from
> a different source and
> they sounded fine).
> 
> Let me know what else I should post (I could record the sound, if that
> would be useful).
> 
> Thanks in advance,
> 
> Nasa


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