[ALSA - utils 0001326]: ISA cards (opl3sa2 in particular) are not detected properly on 2.6 kernels

[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=1326> 
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Reported By:                ahaning
Assigned To:                perex
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Project:                    ALSA - utils
Issue ID:                   1326
Category:                   alsaconf
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
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Date Submitted:             08-10-2005 03:39 CEST
Last Modified:              08-12-2005 18:52 CEST
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Summary:                    ISA cards (opl3sa2 in particular) are not detected
properly on 2.6 kernels
Description: 
When brute-force detecting my OPL3SA2 card, the IRQ and DMA1/DMA2 settings
are incorrectly detected by alsaconf from alsa-utils. For example, the
default BIOS settings are IRQ=11, DMA1=0, DMA2=1, but alsaconf detects
IRQ=5, DMA1=1, DMA2=0. No matter the BIOS settings, alsaconf always
detects those settings (IRQ=5, DMA1=1, DMA2=0). If I set the BIOS settings
to that, then the card will make sound (after touching the mixer while
playing audio).

According to perex (author of the opl3sa2 driver):

"The alsaconf tries to gather free resources (irq/dma/ports) from the
/proc filesystem. It might be extended to gather this information also
from /sys filesystem."
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Relationships       ID      Summary
----------------------------------------------------------------------
related to          0000879 (snd_)opl3sa2 (isa) doesn't work (fails...
======================================================================

----------------------------------------------------------------------
 perex - 08-12-05 18:03 
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Could you try the attached patch opl3sa2.c.patch? The driver should detect
your card in the PnP BIOS way... Simply remove all sound config from your
/etc/modules.conf and type 'modprobe snd-opl3sa2'..

----------------------------------------------------------------------
 ahaning - 08-12-05 18:52 
----------------------------------------------------------------------
O_O

I'm running from an SSH terminal now, but mplayer appears to be playing
correctly.

I will check this as soon as I get home today.

OT: Would it be easy to fix the need-to-touch-the-PCM-mixer-while-playing
bug?

Issue History
Date Modified  Username       Field                    Change              
======================================================================
08-10-05 03:39 ahaning        New Issue                                    
08-10-05 03:39 ahaning        Distribution              => Slackware 9.1 (but
it's not distribution-specific)
08-10-05 03:39 ahaning        Kernel Version            => 2.6.12.2        
08-10-05 13:26 perex          Status                   new => assigned     
08-10-05 13:26 perex          Assigned To               => perex           
08-10-05 13:26 perex          File Added: alsaconf                         
08-10-05 13:28 perex          Note Added: 0005747                          
08-10-05 13:29 perex          Project                  ALSA - driver => ALSA -
utils
08-10-05 13:30 perex          Relationship added       related to 0000879  
08-10-05 13:31 perex          Category                 1_OTHERS => alsaconf
08-10-05 14:55 ahaning        Note Added: 0005748                          
08-11-05 00:24 ahaning        Note Added: 0005752                          
08-11-05 23:59 ahaning        Note Added: 0005763                          
08-12-05 00:00 ahaning        Note Edited: 0005763                         
08-12-05 03:09 ahaning        Note Added: 0005764                          
08-12-05 09:29 perex          Note Added: 0005766                          
08-12-05 12:54 ahaning        Note Added: 0005767                          
08-12-05 15:11 perex          Summary                  ISAPNP cards (opl3sa2 in
particular) are not detected properly on 2.6 kernels => ISA cards (opl3sa2 in
particular) are not detected properly on 2.6 kernels
08-12-05 15:14 perex          Note Added: 0005768                          
08-12-05 15:35 tiwai          Note Added: 0005769                          
08-12-05 15:36 ahaning        Note Added: 0005770                          
08-12-05 15:44 tiwai          Note Added: 0005771                          
08-12-05 15:45 tiwai          Note Added: 0005772                          
08-12-05 15:56 perex          Note Added: 0005777                          
08-12-05 16:08 perex          Note Added: 0005778                          
08-12-05 16:44 ahaning        Note Added: 0005782                          
08-12-05 18:00 perex          File Added: opl3sa2.c.patch                    
08-12-05 18:03 perex          Note Added: 0005783                          
08-12-05 18:52 ahaning        Note Added: 0005787                          
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