Bug 50056

Also an Xfce user on a Thinkpad. I'm seeing the same effect, there's a popping noise whenever the output sliders are moved. Sounds like "Pop" or "Boink", it's definitely intentional and not some weird effect of the soundcard.


I can't find any references to it in pavucontrol's sources. Either it's PA doing that, or I dunno. Weird. And annoying.

KDE 4.11.8
pulseaudio 5.0
pavucontrol 2.0

Two years later I've switched to KDE. I'm not sure when this annoyance ended but it did. Being a QA engineer, it would be nice if this bug had some indication as to what fixed it and when before being closed out.

kde (kmix) supports feedback too, but (I believe) not enabled by default.  Look in it's settings for option labelled "Volume Feedback"

Xfce has no such function, yet I still get the "pop". Furthermore, its only pavucontrol doing this, no other program or hotkey has this effect.

My mention of kmix was in reply to comment #2

Otherwise, this report "Feedback popping sound when volume sliders are moved" is only noting a feature, not a bug.

Now, perhaps what you really want is an option to turn volume feedback off in pavucontrol.

Created attachment 99272 [details] [review]
sloppily disable feedback sound

Yes, indeed, that would be my suggestion.


This made me realize that this is indeed a pavucontrol effect. I had another look and indeed found where in the sources it does this. It uses libcanberra for the feedback sound, which might explain why comment 2 reports that it's gone on KDE - does KDE use canberra?

I've attached a simple patch that simply disables the feedback sound. It's not a proper solution, of course, but might benefit someone in the interim.


One interesting bug I've encountered with the feedback sound is that on local systems, it plays back the sound every 2 seconds or so, but on a network PA server attached via module-tunnel-sink, there is no such timeout. It sounds like *popopopopopopop* whenever I change the volume on remote sinks.

This is really annoying. It would probably be a good idea if it played ONLY if there was no other sound playing.

you have to provide log when pop occurs

the volume slider in sound preference use pulseauio volume scale, the requested volume is high precision and hardware volume  usually cannot satisfy and have to use software volume which need rewind to re calculate data 

https://bugs.freedesktop.org/show_bug.cgi?id=46236#c5


(  20.557|   0.094) D: [pulseaudio] protocol-native.c: Client pavucontrol changes volume of sink alsa_output.usb-045e_Microsoft_LifeChat_LX-3000-00-LX3000.analog-stereo.
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: Requested volume: 0:   0% 1:   0%
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c:            in dB: 0: -inf dB 1: -inf dB
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: Got hardware volume: 0:  34% 1:  34%
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c:               in dB: 0: -28.31 dB 1: -28.31 dB
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: Calculated software volume: 0:   0% 1:   0% (accurate-enough=no)
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c:                      in dB: 0: -inf dB 1: -inf dB
(  20.557|   0.000) D: [alsa-sink] sink.c: Volume going down to 0 at 519702599072
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: Requested to rewind 352800 bytes.
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: Limited to 3272 bytes.
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: before: 818
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: after: 818
(  20.557|   0.000) D: [alsa-sink] alsa-sink.c: Rewound 3272 bytes.
(  20.557|   0.000) D: [alsa-sink] sink.c: Processing rewind...
(  20.557|   0.000) D: [alsa-sink] sink.c: latency = 8982
(  20.557|   0.000) D: [alsa-sink] sink-input.c: Have to rewind 3272 bytes on render memblockq.
(  20.557|   0.000) D: [alsa-sink] sink-input.c: Have to rewind 3272 bytes on implementor.
(  20.557|   0.000) D: [alsa-sink] sink-input.c: Have to rewind 3272 bytes on render memblockq.
(  20.557|   0.000) D: [alsa-sink] source.c: Processing rewind...
(  20.557|   0.000) I: [pulseaudio] module-device-restore.c: Storing volume/mute for device+port sink:alsa_output.usb-045e_Microsoft_LifeChat_LX-3000-00-LX3000.analog-stereo:analog-output-speaker.
(  20.558|   0.000) D: [alsa-sink] sink.c: Volume change to 0 at 519702580528 was written 60 usec late
(  20.558|   0.000) D: [alsa-sink] alsa-sink.c: Written HW volume did not match with the request: 0:   0% 1:   0% (request) != 0:  34% 1:  34%
(  20.558|   0.000) D: [alsa-sink] alsa-sink.c:                                            in dB: 0: -inf dB 1: -inf dB (request) != 0: -28.31 dB 1: -28.31 dB

(In reply to comment #8)
That's not the kind of popping sound this report is about. It's a deliberate sound effect.

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/pulseaudio/pavucontrol/issues/45.