Bug 494709 - Sound Preferences (gnome-volume-control) Applications tab shows mixers for output devices when using Simultaneous Output
Sound Preferences (gnome-volume-control) Applications tab shows mixers for ou...
Status: CLOSED NOTABUG
Product: Fedora
Classification: Fedora
Component: gnome-media (Show other bugs)
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All Linux
low Severity medium
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Assigned To: Bastien Nocera
Fedora Extras Quality Assurance
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Reported: 2009-04-07 16:53 EDT by James
Modified: 2009-04-08 05:40 EDT (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2009-04-07 20:05:37 EDT
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Diagram showing the incorrect mixer associations (91.48 KB, image/png)
2009-04-07 16:53 EDT, James
no flags Details

  None (edit)
Description James 2009-04-07 16:53:18 EDT
Created attachment 338606 [details]
Diagram showing the incorrect mixer associations

Description of problem:
Under the Applications tab of the GNOME Sound Preferences (gnome-volume-control) application, adjusting the mixer's sliders adjusts PulseAudio's output device volumes, precisely as shown under the Output Device tab in pavucontrol.

One expects the Applications tab to list applications and allow the mixture to be adjusted independent of the overall device volume.

Version-Release number of selected component (if applicable):
kernel-2.6.29.1-54.fc11.x86_64
kernel-2.6.29.1-54.fc11.i586
alsa-lib-1.0.19-3.fc11.x86_64
alsa-lib-1.0.19-3.fc11.i586
alsa-plugins-pulseaudio-1.0.18-3.fc11.x86_64
gnome-media-2.26.0-1.fc11.x86_64
pulseaudio-0.9.15-8.test7.fc11.x86_64

Observed on both Intel HDA/Realtek and ATI IXP sound hardware.

See attached screenshot for the correspondence (despite the Rhythmbox label, the slider has no association with that stream).
Comment 1 Bastien Nocera 2009-04-07 20:05:37 EDT
It adjusts both. It's called "Flat Volumes", see:
http://0pointer.de/blog/projects/oh-nine-fifteen.html

Reopen if I misunderstood your misunderstanding.
Comment 2 James 2009-04-08 05:40:25 EDT
Thanks for the info. I've checked that this is, indeed, how it works when streams are set to output on real audio devices. However, the behaviour is less clear when Simultaneous Output is being used. In that case, the "Flat Volume" feature works on the Simultaneous Output device, but I also mixers for the physical devices showing up under the Applications tab. I find this a bit confusing.

Perhaps these sliders should be suppressed and placed next to the balance control in the Output tab (which for some reason only adjusts the device checked by the radio button --- surely it should adjust the one *selected* regardless of this?).

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