[Phonon] [Bug 346686] Surround sound channels restored to 100% on volume change

[Andrew Crouthamel]

https://bugs.kde.org/show_bug.cgi?id=346686

Andrew Crouthamel  changed:

   What|Removed |Added

 Status|NEEDSINFO   |RESOLVED
 Resolution|WAITINGFORINFO  |WORKSFORME

--- Comment #7 from Andrew Crouthamel  ---
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 30 days. The
bug is now closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki
located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!

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[Phonon] [Bug 346686] Surround sound channels restored to 100% on volume change

[Andrew Crouthamel]

https://bugs.kde.org/show_bug.cgi?id=346686

Andrew Crouthamel  changed:

   What|Removed |Added

   Keywords||triaged

--- Comment #6 from Andrew Crouthamel  ---
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days.
Please provide the requested information as soon as possible and set the bug
status as REPORTED. Due to regular bug tracker maintenance, if the bug is still
in NEEDSINFO status with no change in 30 days, the bug will be closed as
RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki
located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug
status as REPORTED so that the KDE team knows that the bug is ready to be
confirmed.

Thank you for helping us make KDE software even better for everyone!

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[Phonon] [Bug 346686] Surround sound channels restored to 100% on volume change

[Bart Vaes via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=346686

--- Comment #4 from Bart Vaes  ---
Created attachment 97748
  --> https://bugs.kde.org/attachment.cgi?id=97748=edit
phonon debug

Phonon audio system settings & alsamixer behaviour.

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[Phonon] [Bug 346686] Surround sound channels restored to 100% on volume change

[Harald Sitter via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=346686

Harald Sitter  changed:

   What|Removed |Added

 Resolution|--- |WAITINGFORINFO
 Status|UNCONFIRMED |NEEDSINFO

--- Comment #3 from Harald Sitter  ---
Comment #1 would suggest this is a pulseaudio bug. And I honestly don't see how
this issue has anything to do with phonon if playing a youtube video triggers
it.

We'll need some info here.

1) run any phonon application (juk, amarok, the phonon systemsettings...) with
debug output and trigger the behavior, then post the debug output as a comment
https://techbase.kde.org/Development/Tutorials/Debugging/Phonon

2) uninstall *all* phonon backends; your distribution package manager might not
let you do this so you probably have to temporarily break integrity. logout and
back in. then see if the behavior still is present when changing the volume in
pavucontrol

3) attach screenshots of everything you did. in particular in any sort of mixer
application

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[Phonon] [Bug 346686] Surround sound channels restored to 100% on volume change

[Bart Vaes via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=346686

--- Comment #2 from Bart Vaes  ---
Forgot to mention : I have flat-volumes = no in my /etc/pulse/daemon.conf file,
if that helps ?

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[Phonon] [Bug 346686] Surround sound channels restored to 100% on volume change

[Bart Vaes via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=346686

Bart Vaes  changed:

   What|Removed |Added

 CC||vaesb...@telenet.be

--- Comment #1 from Bart Vaes  ---
Recently discovered this bug on my system as well.
System:
---
openSUSE 42.1 Leap
phonon-backend-gstreamer 4.8.2-1.2
plasma 5.19
kdebase4-runtime 15.12.2-12.2
4.1 sound setup onboard "HDA ATI SB" with RealTek ALC892 chip.

Steps:
--
 * Set master volume to 50% (using pavucontrol or plasmoid...)
 * open alsamixer and select your sound card (not pulseaudio or "default", real
audio card / chipset)
 * Adjust volume levels for "PCM" / "Front" / "Surround" etc... to about 50%
 * When using slider in pavucontrol -> even 1% change makes volume levels in
alsamixer
jump to 100%. This happens for PCM, Front, Surround, Center, LFE, Side on my
system.

Other notes:
---
Directly changing "Master" volume in alsamixer changes slider in pavucontrol
and vice versa.
However, changing "LFE" level in alsamixer also makes slider in pavucontrol
move but leaves "Master" unchanged, causing pavucontrol and alsamixer values
getting out of sync.
This is corrected by closing and restarting alsamixer.

Can this be picked up ? Don't really care aout the hardware but those sudden
volume jumps can be quite painful...

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