[ALSA - driver 0001058]: CMI9880 sometimes produces distorted sound

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1058> 
======================================================================
Reported By:                ahessling
Assigned To:                
======================================================================
Project:                    ALSA - driver
Issue ID:                   1058
Category:                   PCI - hda-intel
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Distribution:               Gentoo
Kernel Version:             2.6.11.6
======================================================================
Date Submitted:             04-16-2005 16:37 CEST
Last Modified:              12-19-2005 07:59 CET
======================================================================
Summary:                    CMI9880 sometimes produces distorted sound
Description: 
I am using the CVS version of alsa-kernel from a few days and because of
the soundchip CMI9880, I have to activate Intel HDA in the kernel.
Sound is working quite fine in stereo mode, but if I want to play a DVD
with 5.1 sound, all speakers are activated but the sound is a little bit
distorted.
xine uses plug:surround51:0 as the surround device.

My asound.conf looks like this:
pcm.!default {
type plug
slave.pcm "svol"
}

pcm.svol {
type softvol
slave.pcm "hw:0,0"
control {
name "PCM Playback Volume"
}
}

I also tried the one from http://www.sabi.co.uk/Cfg/ALSA/
Again, stereo sound works fine and also dmix does its work, but this time
I only get stereo sound in xine although the same configuration of xine is
used.

I also noticed that playing some files using aplay produces the same
distortions, e.g.:

aplay /usr/share/sounds/k3b_success1.wav
Playing WAVE '/usr/share/sounds/k3b_success1.wav' : Unsigned 8 bit, Rate
8000 Hz, Mono

Seems to have to do something with sample rate.
Using the other asound.conf from the homepage above just gives an error:
Playing WAVE '/usr/share/sounds/k3b_success1.wav' : Unsigned 8 bit, Rate
8000 Hz, Mono
aplay: set_params:857: Sample format non available
 
Is there a way to play 5.1 sound without these distortions? Maybe some
lines added to my asound.conf would do the work.

Thanks in advance!

Regards,
André
======================================================================

----------------------------------------------------------------------
 komanek - 08-19-05 12:58 
----------------------------------------------------------------------
Thank you, with the 1.0.9b alsa drivers it seems to work much better. The
sound still gets sometimes distorted, but only ocasionaly and for a moment
only.

----------------------------------------------------------------------
 rlrevell - 12-19-05 07:59 
----------------------------------------------------------------------
Would you say this bug is fixed?

Issue History
Date Modified  Username       Field                    Change              
======================================================================
04-16-05 16:37 ahessling      New Issue                                    
04-16-05 16:37 ahessling      Distribution              => Gentoo          
04-16-05 16:37 ahessling      Kernel Version            => 2.6.11.6        
04-19-05 17:47 tiwai          Note Added: 0004527                          
04-19-05 17:47 tiwai          Category                 OTHERS => PCI - hda-intel
04-21-05 11:41 ahessling      Note Added: 0004550                          
06-22-05 16:32 andersin       Note Added: 0005133                          
06-22-05 17:49 tiwai          Note Added: 0005135                          
08-08-05 12:26 komanek        Note Added: 0005704                          
08-08-05 12:37 komanek        Note Added: 0005705                          
08-11-05 14:29 tiwai          Note Added: 0005758                          
08-19-05 12:58 komanek        Note Added: 0005869                          
12-19-05 07:59 rlrevell       Note Added: 0007090                          
======================================================================




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