[ALSA - liboss 0001164]: aoss + skype: volume_adjust: SOUND_MIXER_WRITE_IGAIN failed: Invalid argument

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1164> 
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Reported By:                sst4
Assigned To:                
======================================================================
Project:                    ALSA - liboss
Issue ID:                   1164
Category:                   
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
======================================================================
Date Submitted:             06-07-2005 00:33 CEST
Last Modified:              06-13-2005 13:03 CEST
======================================================================
Summary:                    aoss + skype: volume_adjust: SOUND_MIXER_WRITE_IGAIN
failed: Invalid argument
Description: 
I've tried 'skype' with my M-Audio Revolution 7.1.

Soon (probably in a second) after this command line:

aoss skype &

the terminal window gets filled with

volume_adjust: SOUND_MIXER_WRITE_IGAIN failed: Invalid argument

messages, and I do not hear anything in 'skype' connecting to their
automated 'echo123' service.

The message is not quite clear, and I believe it shouldn't flood the
screen.

I mean, the code should first check capabilities of the card and its
configuration and
issue the message once.


What is IGAIN in the message above ? Input gain ? That is, capture gain ?

======================================================================

----------------------------------------------------------------------
 sst4 - 06-12-05 19:35 
----------------------------------------------------------------------
Takashi,

thanks for you reply.

I do not think it's that much of a bug in Skype.

I think it's hard to find a soundcard which doesn't have input gain
control
under Windows.

And I believe that the card should have, and it's possible to do, input
gain control - please see

https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1187
.

Aslo, I'm repeating what I've said in the issue above:

"
*** I still have no capture with my Revolution 7.1 (issue 0001096) ***
.

Since I'm not getting it work, I've been trying to use ALSA utilities
('amixer',
'alsamixer', 'aoss') - "trial and error" approach - to make it work, and
have
found other problems on the way.

Resolution of these other problem, including introduction of gain
control,
will not solve my main problem - lack of capture.


I would appreciate getting an answer to the question in

https://bugtrack.alsa-project.org/alsa-bug/view.php [^]?id=1096 :

"
Maybe my previous question does not contain enough details.

Here is the rephrased question:

Running 'amixer' with this command line

amixer cget numid=<number>

, where <number is in 5..12 range, I see output like this:

"
  ; type=ENUMERATED,access=rw---,values=1,items=5
  ; Item 0 'PCM Out'
  ; Item 0000001 'H/W In 0'
  ; Item 0000002 'H/W In 1'
  ; Item 0000003 'IEC958 In L'
  ; Item 0000004 'IEC958 In R'
  : values=0
".

Can any of these controls be related to enabling capture ?

Thanks,
  Sergei.
".

Or, to be more precise, getting an answer to the question in general:
"How
to enable capture in M-Audio Revolution 7.1 ?".
".

Thanks,
  Sergei.

----------------------------------------------------------------------
 tiwai - 06-13-05 13:03 
----------------------------------------------------------------------
This card (codec chip) has really no input level support _on hardware_.

Can't you choose the capture source via alsamixer instead of amixer?

Issue History
Date Modified  Username       Field                    Change              
======================================================================
06-07-05 00:33 sst4           New Issue                                    
06-08-05 14:50 tiwai          Note Added: 0004923                          
06-08-05 14:51 tiwai          File Added: aoss-igain-fix.diff                   

06-08-05 14:53 tiwai          Note Added: 0004926                          
06-08-05 14:54 tiwai          File Added: aoss-igain-fix2.diff                  
 
06-08-05 14:55 tiwai          File Deleted: aoss-igain-fix.diff                 
  
06-12-05 19:35 sst4           Note Added: 0004999                          
06-13-05 13:03 tiwai          Note Added: 0005006                          
======================================================================




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