Bug 497742

Hmm, smells like  driver issue.

I have the same soundcard lying around here. Will try to reproduce.

I wonder ig this actually might be related to bug 497744.

In my case it seems to work normally after the initial glitch.

another logitech headset outputs the same glitch (i think its a 250,
the usb chips may be almost the same however...) so I have now
3 kinds of usb audio which all produces this sound. if you want to hear it
i can make a recording with a microphone :)

Yesterday evening it did even better :-(

1. I started aplay some.wav using onboard Intel ICH8 sound system.
2. put on my USB headset
3. started pavucontrol with the intent to move the aplay output
   to the headset.

Result: a _very_ loud random noise for more than one second in the
   headset. I have never been that fast to pull it from my head before.
   ( the noise 'color' was close to white as far as I can tell )
   
   After that all worked normally.

If this would have happened to my stereo connected to the Aureon 5.1 MkII USB
i am not sure if the tweeters would have survived the high frequency energy ..

This is fixed since quite a while in PA git. The patch is very intrusive though, so I don't want to push this into F11 right now, and risk breakage causing further delay of the release.

I will shortly push this into updates-testing however so that folks can test it and it can enter F11 after the release.

The bug is actually a driver bug, but also a case that should probably be fixed in PA anyway.

*** Bug 503374 has been marked as a duplicate of this bug. ***

pulseaudio-0.9.15-13.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/pulseaudio-0.9.15-13.fc11

This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

pulseaudio-0.9.15-14.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/pulseaudio-0.9.15-14.fc11

pulseaudio-0.9.15-14.fc11 has been pushed to the Fedora 11 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update pulseaudio'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F11/FEDORA-2009-6410

I no longer hear this strange sound when I plug in my USB headset.  Suggest you try the updates-testing packages from above.

I still here some irritating sound when I plug usb soundcard in (terratec aureon mkII), using:
$ rpm -qa | grep pulse | sort
alsa-plugins-pulseaudio-1.0.18-3.fc11.x86_64
pulseaudio-0.9.15-14.fc11.x86_64
pulseaudio-libs-0.9.15-14.fc11.x86_64
pulseaudio-module-x11-0.9.15-14.fc11.x86_64
pulseaudio-utils-0.9.15-14.fc11.x86_64
xine-lib-pulseaudio-1.1.16.3-2.fc11.x86_64

well... I don't here this irritating sound, when using only front left+right, but when I use all 5.1 channels, it's still there

I'm still getting it upon login (iMic, originally reported on bug 503374).

(In reply to comment #13)
> well... I don't here this irritating sound, when using only front left+right,
> but when I use all 5.1 channels, it's still there  

taking back. I've rewired my sound box yesterday and I was checking stereo with wrong switch. I can still here that sound

Problem still present (tried with USB headphone, will try with my Aureon 5.1 MkII when I get it back).
 
happens when restarting pulseaudio or after connecting headset.

Sorry Lennart... :-)

PS: could you pls drop a few lines about the bug details? 

pulseaudio-module-bluetooth-0.9.15-14.fc11.x86_64
pulseaudio-module-gconf-0.9.15-14.fc11.x86_64
pulseaudio-libs-glib2-0.9.15-14.fc11.x86_64
pulseaudio-module-x11-0.9.15-14.fc11.x86_64
pulseaudio-0.9.15-14.fc11.x86_64
pulseaudio-libs-0.9.15-14.fc11.x86_64
pulseaudio-utils-0.9.15-14.fc11.x86_64

*** Bug 506484 has been marked as a duplicate of this bug. ***

Ok, this is not a PA bug then (wasn't in the first place anyway. My fix simply changed a bit the init logic of the ALSA logic and I assumed this would fix that).

The problem seems to be that snd-usb-audio does not properly clear out the playback buffer during playback startup, regardless how snd_pcm_sw_params_set_silence_threshold() is set. This only becomes noticable in PA since depending on the latency settings we only use a part of the playback buffer we actually ask for.

I will now reassign this to the kernel/Jaroslav.

pulseaudio-0.9.15-14.fc11 has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.

this bug still exists, it was only auto closed by bodhi, because bug number was specified in pulseaudio's push, but component has been changed since that

Oh yeah!  Thanks for fixing this bug, I was very worried that the tweeters were about to blow on my huge-ass speakers, and I've been having to switch the receiver to Tape every time I switched the card on.  I have not tried it yet, but it was really concerning in a "shit, this is gonna cost me thousands of dollars" way.

I seem to be getting identical symptoms when starting a VirtualBox guest.  Not sure if that's another way to trigger the same problem or something else.

Sorry, I accidentaly closed this.

*** Bug 506402 has been marked as a duplicate of this bug. ***

Don't close this -- I still experience the horrible random noise, but it's a bit shorter now.

I am experiencing the same problem when i plug in my Harman/Kardnon soundsticks
i get the distorted noise even on welcome screen after that its fine. And when i play any mp3 file or ogg the noise comes and goes away after a second but if i try raise the volume the noise comes back and the sound starts stuttering.

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