[Bug 303236] New: Sound volume randomly changes (jumps, fluctulates) in all programs (amarok, mplayer, browser playing mp3 etc.)

[Dan Duris]

https://bugs.kde.org/show_bug.cgi?id=303236

            Bug ID: 303236
          Severity: normal
           Version: 4.8
          Priority: NOR
          Assignee: unassigned-bugs at kde.org
           Summary: Sound volume randomly changes (jumps, fluctulates) in
                    all programs (amarok, mplayer, browser playing mp3
                    etc.)
    Classification: Unclassified
                OS: Linux
          Reporter: kdebugs at staznosti.sk
          Hardware: Ubuntu Packages
            Status: UNCONFIRMED
         Component: general
           Product: kde

HDMI volume (I haven't tested for stereo jack output) randomly jumps (changes,
fluctules) while music is playing. Song volume is suddenly randomly decreased
or increased, sometimes even falling silent for tenth of a second.

Reproducible: Always

Steps to Reproduce:
1. play music
2. listen to the song
3. volume randomly changes
Actual Results:  
volume fluctulation

Expected Results:  
volume steady

I have tested disabling kmix, trying veromix instead, i have reinstalled alsa,
pulse audio, gstreamer, kde.

alsamixer or pulseaudio don't show changes in volume as far as I can see.

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