Bug 92031

Summary:	flat volumes causes sound crackling if applications volume is not at same level of master volume
Product:	PulseAudio	Reporter:	Germano Massullo <germano.massullo>
Component:	core	Assignee:	pulseaudio-bugs
Status:	RESOLVED MOVED	QA Contact:	pulseaudio-bugs
Severity:	normal
Priority:	medium	CC:	lennart, rdieter, samuel
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	pulseaudio logs

Description Germano Massullo 2015-09-17 17:53:04 UTC

Created attachment 118328 [details]
pulseaudio logs

Description of problem:
Let's assume that master audio volume level is at 50%.
Let's assume that Amarok player audio volume level is at 50%, so at the same level of master audio volume.
In this situation if you change the master audio volume level, Amarok player audio volume level will change too, at the same percentage. No problem till here.

Now you set a certain offset between Amarok volume level and master audio volume level, for example by decreasing Amarok by a 20%. Then try to change the master audio volume level, increasing or decreasing it quickly. You will ear audio crackling.

Disabling flat-volumes in /etc/pulse/daemon.conf solves the problem

Version-Release number of selected component (if applicable):
pulseaudio-6.0-8.fc22.x86_64

I attach output of
$ pulseaudio -vvv
retrieved while doing the test

Downstream bugreport: https://bugzilla.redhat.com/show_bug.cgi?id=1264177

Comment 1 GitLab Migration User 2018-07-30 09:36:33 UTC

-- 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/pulseaudio/issues/48.

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