[ALSA - driver 0000644]: CMI8738 - Line-in as bass conflicts with line-as rear.

[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=644> 
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Reported By:                jborges
Assigned To:                tiwai
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Project:                    ALSA - driver
Issue ID:                   644
Category:                   PCI - cmipci
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     assigned
Distribution:               Kurumin 3.2 (a Brazilian flavor of Knoppix) with kde
3.2.3
Kernel Version:             Kernel 2.4.25-klg
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Date Submitted:             11-12-2004 00:09 CET
Last Modified:              11-18-2004 19:40 CET
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Summary:                    CMI8738 - Line-in as bass conflicts with line-as
rear.
Description: 
I'm using Kurumin 3.2 (a Brazilian flavor of Knoppix) in a ASUS P4B533 with
CMI8738 sound chip, processor is Pentium IV 3.0 GHz, 512 RAM and 120
Maxtor Ultra Dma Hard Disk.

Also I use Kde 3.2.3 on Kernel 2.4.25-klg.

This Linux installation works in a dual-boot with windows xp.

The sound works fine (all 6 channels respond very well)under windows xp or
98.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Trying to configure my sound to work I noticed some problems with
alsamixer:

1 - As I can see, there is a conflict for the output. I can't see Line-In
been used to output as bass and the same Line-In used to output as rear
(L/R).

2 - I think Line-In would be used to output as Rear (L/R) and Mic to
output as Bass/Center.

What is happening is that: when one uses a 6 channel system there is no
sound in the conflicted Line-In as bass and Mic as center. The little
sound that goes there is squeezed from Line-In as rear. The sound in bass
and center is full of noise. Impossible to listen.

I took some snapshots (2) to show you what I'm talking about. Please take
a look on them in the attached files.

Julio Borges
Rio de Janeiro - Brazil
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----------------------------------------------------------------------
 jborges - 11-18-04 19:04 
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Please take a look at attached file. Notice that both Line-as Rear and
Line-In as Bass are not enabled. I have no means to turn it on or off.
Also notice in the above result of amixer that most of the controls are
set to mono.

----------------------------------------------------------------------
 tiwai - 11-18-04 19:40 
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I see that both of them are enabled.  And amixer output shows that both are
enabled, too.

Forget '[mono]' in the output of amixer.  It means only that the mixer
volume/switch has no invididual left/right controls.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
11-12-04 00:09 jborges        New Issue                                    
11-12-04 00:09 jborges        File Added: sound-cm8738-alsamixergui.png         
          
11-12-04 00:09 jborges        Distribution              => Kurumin 3.2 (a
Brazilian flavor of Knoppix) with kde 3.2.3
11-12-04 00:09 jborges        Kernel Version            => Kernel 2.4.25-klg
11-18-04 18:16 tiwai          Note Added: 0002455                          
11-18-04 19:04 jborges        Note Added: 0002458                          
11-18-04 19:40 tiwai          Note Added: 0002463                          
======================================================================




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