[ALSA - lib 0000881]: Distorted sound with enabled dmix plugin

[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=881> 
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Reported By:                yure
Assigned To:                
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Project:                    ALSA - lib
Issue ID:                   881
Category:                   pcm - digital audio
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             02-03-2005 12:25 CET
Last Modified:              02-04-2005 15:30 CET
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Summary:                    Distorted sound with enabled dmix plugin
Description: 
After 10-20 minutes listening music with xmms or beep-media-player I hear
distorted sound. Appear noise.
This problem is appear when enabled dmix plugin through configuration file
~/.asoundrc.
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----------------------------------------------------------------------
 tiwai - 02-04-05 14:53 
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I've seen similar problems only on ICH test boards around me.
The AMD machines are OK.

Are you using the patched xmms/bmp with multi-threading?
Does it happen with plug layer, too?  (Give plug:dmix in the device entry
of ALSA output plugin)

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 yure - 02-04-05 15:30 
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Yes. I use pathced xmms.bmp with multi-threading.
Here fragment from my .asoundrc:
pcm.swmix {
        type dmix
        # any unique number here
        ipc_key 31334567
        slave {
                pcm "hw:0,0"
                # these settings may require tweaking for different sound
                # cards; this is for the Powerbook's built-in
snd-powermac
                # probably not required at all for well-behaved cards...
                period_time 0
                period_size 1024
                buffer_size 8192
                # mentioning rate fixes wrong speed/pitch in native ALSA
stuff
                rate 44100
        }

    # bindings are cool. This says, that only the first
    # two channels are to be used by swmix, which is enough for
    # (most) oss apps and also lets multichannel chios work
    # much faster:
    bindings {
        0 0   # from 0 => to 0
        1 1   # from 1 => to 1
    }
}

Issue History
Date Modified  Username       Field                    Change              
======================================================================
02-03-05 12:25 yure           New Issue                                    
02-04-05 10:39 yure           Note Added: 0003497                          
02-04-05 10:39 yure           Issue Monitored: yure                        
02-04-05 14:53 tiwai          Note Added: 0003506                          
02-04-05 15:30 yure           Note Added: 0003508                          
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