Sound played through pulseaudio on ice1712 has loud crackling

[Florian Zeitz]

When playing sound through pulseaudio I hear a loud cracking noise over the actual sound.
The card is a M-Audio Audiophie 24/96 using a ICE1712 chipset.
Playback directly through Alsa is fine.
cat /proc/asound/cards:
 0 [M2496 ]: ICE1712 - M Audio Audiophile 24/96
                      M Audio Audiophile 24/96 at 0x9400, irq 16

[Florian Zeitz (florian-zeitz)]

After a update of the package AND a reboot this is fixed. I'm going to assume it was fixed by some change that seems unrelated as I didn't see anything that would fix something like this.

[Florian Zeitz (florian-zeitz)]

Correction:
I just noticed it, but this only happens as long as Kaffeine is running. Before and a while after sound (from other applications) is fine.
Also it now is more of a buzzing then cracks.

[Florian Zeitz (florian-zeitz)]

I get this following log with pulseaudio -vvvv from opening to closing kaffeine.

[Florian Zeitz (florian-zeitz)]

And again correction :( :
It now seems to me that this happens with any application as soon as I change the volume. Also it's very loud (louder then it used to be at the same alsa levels of the card anyway) even at 2%.
Sorry for the noise, maybe the log is still helpful though.

[Daniel T Chen (crimsun)]

On Mon, Sep 21, 2009 at 7:53 AM, Florian Zeitz <email address hidden> wrote:
> It now seems to me that this happens with any application as soon as I change the volume. Also it's very loud (louder then it used to be at the same alsa levels of the card anyway) even at 2%.

Please also see bug 428619.

[Florian Zeitz (florian-zeitz)]

I haven't had time to test knarf'spatch, but starting with PULSE_NO_SIMD=1 pulseaudio -vvvv fixes this for me too. Feel free to mark this as a duplicate if thathatman's bug 428519 turns out to be the same thing that knarf found a workaround for.

[Florian Zeitz (florian-zeitz)]

I haven't had time to test knarf'spatch, but starting with PULSE_NO_SIMD=1 pulseaudio -vvvv fixes this for me too. Feel free to mark this as a duplicate if thathatman's bug 428619 turns out to be the same thing that knarf found a workaround for.

[Daniel T Chen (crimsun)]

Can you reproduce this symptom using the Lucid Beta 1 live cd? If so, does changing default-sample-format and/or default-sample-rate help?

[ScottMiller (stmiller)]

For me, changing the default sample rate to 44100 and setting it to 'lock' at this rate fixed any crackling or 'hot' audio. (Using Ubuntu 10.10 beta, audiophile 2496 / ICE1712 card).

Thanks,

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 433307

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]