[ALSA - driver 0002321]: no audio and very few mixer options with C-Media 106 based USB sound card

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A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2321> 
======================================================================
Reported By:                doobedoobedo
Assigned To:                Clemens Ladisch
======================================================================
Project:                    ALSA - driver
Issue ID:                   2321
Category:                   USB - usb-audio
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
Distribution:               Gentoo
Kernel Version:             2.6.14/5
======================================================================
Date Submitted:             08-01-2006 16:43 CEST
Last Modified:              08-04-2006 01:54 CEST
======================================================================
Summary:                    no audio and very few mixer options with C-Media 106
based USB sound card
Description: 
no audio output with the snd-usb-audio module

amixer output:
Simple mixer control 'PCM',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 4095
  Front Left: Capture 2048 [50%] [on]
  Front Right: Capture 2048 [50%] [on]
Simple mixer control 'PCM Capture Source',0
  Capabilities: enum
  Items: 'Mic' 'Input 1' 'Input 2' 'Mixer'
  Item0: 'Mic'
Simple mixer control 'PCM',1
  Capabilities: cvolume
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 4095
  Front Left: Capture 2048 [50%]
  Front Right: Capture 2048 [50%]
Simple mixer control 'Mic',0
  Capabilities: pvolume cvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: Playback 0 - 8191 Capture 0 - 4095
  Front Left: Playback 2048 [25%] [off] Capture 2048 [50%]
  Front Right: Playback 2048 [25%] [off] Capture 2048 [50%]
Simple mixer control 'Auto Gain Control',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 8191
  Mono:
  Front Left: Playback 2048 [25%] [on]
  Front Right: Playback 2048 [25%] [on]
Simple mixer control 'Speaker',1
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 37
  Mono: Playback 15 [41%] [on]

speaker 0 and mic will only decrease in volume in alsamixer, although no
sound is played trough the speakers at all.
======================================================================

----------------------------------------------------------------------
 rlrevell - 08-04-06 01:31 
----------------------------------------------------------------------
Hmm, looking at the driver it really seems that your change should work. 
Did you reboot?  Make sure the new driver is loaded?

Sorry, I don't know the USB driver that well.  If it still doesn't work
can you post your patch with a link to this bug report to alsa-devel at
lists.sourceforge.net?

----------------------------------------------------------------------
 doobedoobedo - 08-04-06 01:54 
----------------------------------------------------------------------
I'm afraid mythtv is a bit too complex for me ;). I've been loading and
unloading the snd-usb-audio module by hand, I did a reboot though and its
still the same. I'll post to the devel list tomorrow, thanks for your
help.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
08-01-06 16:43 doobedoobedo   New Issue                                    
08-01-06 16:43 doobedoobedo   Distribution              => Gentoo          
08-01-06 16:43 doobedoobedo   Kernel Version            => 2.6.14/5        
08-01-06 16:51 doobedoobedo   Issue Monitored: doobedoobedo                    
08-01-06 16:54 doobedoobedo   Note Added: 0011376                          
08-03-06 03:40 doobedoobedo   Note Added: 0011393                          
08-03-06 17:34 doobedoobedo   Note Added: 0011404                          
08-03-06 19:15 rlrevell       Note Added: 0011407                          
08-03-06 20:32 doobedoobedo   Note Added: 0011408                          
08-03-06 20:37 rlrevell       Note Added: 0011409                          
08-03-06 23:02 doobedoobedo   Note Added: 0011410                          
08-03-06 23:13 rlrevell       Note Added: 0011411                          
08-04-06 00:58 doobedoobedo   Note Added: 0011412                          
08-04-06 01:21 rlrevell       Note Added: 0011413                          
08-04-06 01:31 rlrevell       Note Added: 0011414                          
08-04-06 01:54 doobedoobedo   Note Added: 0011415                          
======================================================================



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