[pulseaudio-tickets] [Bug 79991] New: Glitching when adjusting volume

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79991

          Priority: medium
            Bug ID: 79991
                CC: lennart at poettering.net
          Assignee: pulseaudio-bugs at lists.freedesktop.org
           Summary: Glitching when adjusting volume
        QA Contact: pulseaudio-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: trondsg+bugzilla+freedesktop at gmail.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: core
           Product: PulseAudio

Created attachment 100986
  --> https://bugs.freedesktop.org/attachment.cgi?id=100986&action=edit
glitch reproduced on 220 hz sine wave, adjusted output volume from indicator
applet

When adjusting the volume with pulse audio's volume control window the sound
has small glitches.

This is sometimes not possible to hear, sometimes really apparent, depending on
the type of sound played, and which volume control is changed.

Can be clearly heard with a test tone, generate a sine wave of 220 hz in
audacity and set it to play.

Adjusting the output device slider (analog output) gives the most glitching
(note: this is not just the pops that are supposed to be there!).

Adjusting the volume from the taskbar applet also adjust this same slider,
without the pops that are supposed to be there. The glitches are still there.

Adjusting the program specific control under playback also causes glitching,
but much less.

Confirmed on two computers.

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