[ALSA - lib 0000172]: Master volume control only controls front speakers

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
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<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=172> 
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Reported By:                gruberroland
Assigned To:                perex
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Project:                    ALSA - lib
Issue ID:                   172
Category:                   2_mixer
Reproducibility:            always
Severity:                   feature
Priority:                   normal
Status:                     assigned
======================================================================
Date Submitted:             03-31-2004 11:50 CEST
Last Modified:              03-12-2006 11:04 CET
======================================================================
Summary:                    Master volume control only controls front speakers
Description: 
The master volume control has no effect on the rear speakers.
The rear speakers can be controlled by "Sigmatel Surround" but not
completly muted.

I use "Sigmatel 4-Speaker Stereo" to get sound on all 4 speakers. The
speakers are plugged into both output plugs on the soundcard.

I tried all volume controls that are provided, there seems to be no master
control.
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Relationships       ID      Summary
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related to          0000154 Master volume only controls front outpu...
related to          0000919 Master volume doesn't control rear spea...
======================================================================

----------------------------------------------------------------------
 gruberroland - 03-12-06 10:36 
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I created this report because the volume control on my ens1371 did not work
correctly. But I do not know why there is no more reference to the
ens1371.

----------------------------------------------------------------------
 Raymond - 03-12-06 11:04 
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If you want to mute the rear speaker, the simplest way is to turn "Sigmatel
4-Speaker Stereo" off.

The name of the control should be named according to the slots assigned to
the pcm 

It depend how stac9708 is configured - multi-channels programming register
74h.

MC1, MC0  PCM OUT LEFT PCM OUT RIGHT PCM2 LEFT PCM2 RIGHT
0, 0      Slot 3       Slot 4        Slot 7    Slot 8
0, 1      Slot 7       Slot 8        Slot 6    Slot 9 
1, 0      Slot 6       Slot 9        Slot 7    Slot 8
1, 1      Slot 6       Slot 9        Slot 10   Slot 11

Issue History
Date Modified  Username       Field                    Change              
======================================================================
03-31-04 11:50 gruberroland   New Issue                                    
03-31-04 11:50 gruberroland   Kernel Version            => 2.4.25          
03-31-04 16:33 perex          Assigned To               => perex           
03-31-04 16:33 perex          Severity                 major => feature    
03-31-04 16:33 perex          Status                   new => assigned     
03-31-04 16:35 perex          Note Added: 0000725                          
10-22-04 16:44 perex          Relationship added       related to 0000154  
10-29-04 21:03 BMS            Issue Monitored: BMS                         
02-22-05 09:57 perex          Relationship added       related to 0000919  
02-22-05 09:59 perex          Project                  ALSA - driver => ALSA -
lib
02-22-05 09:59 perex          Category                 PCI - ens1371 => mixer
03-09-06 11:17 muffty         Note Added: 0008387                          
03-09-06 11:18 muffty         File Added: master_volume_v3.patch                
   
03-09-06 11:19 muffty         Note Edited: 0008387                         
03-09-06 11:24 muffty         Issue Monitored: muffty                      
03-09-06 12:23 Miwer          Issue Monitored: Miwer                       
03-09-06 19:53 muffty         Note Edited: 0008387                         
03-10-06 02:45 Raymond        Note Added: 0008398                          
03-10-06 03:05 Raymond        Note Added: 0008399                          
03-10-06 03:20 rlrevell       Note Added: 0008400                          
03-11-06 08:50 Raymond        Note Added: 0008414                          
03-11-06 19:02 rlrevell       Note Added: 0008420                          
03-12-06 05:22 Raymond        Note Edited: 0008398                         
03-12-06 10:36 gruberroland   Note Added: 0008429                          
03-12-06 11:04 Raymond        Note Added: 0008430                          
======================================================================




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