[alsa-devel] [Alsa-user] Metallic recording in cs46xx on Thinkpad T22

[Takashi Iwai]

At Wed, 12 Mar 2008 18:17:43 +0100,
Rene Herman wrote:
> 
> On 12-03-08 17:59, Takashi Iwai wrote:
> 
> > At Wed, 12 Mar 2008 17:39:48 +0100,
> > Rene Herman wrote:
> >> On 12-03-08 15:43, Takashi Iwai wrote:
> >>
> >>> At Tue, 11 Mar 2008 23:01:39 +0100,
> >>> Rene Herman wrote:
> >>>> On 11-03-08 08:24, Gadi Oron wrote:
> >>>>
> >>>>> I am trying to record sound on an old Thinkpad T22 that uses the cs46xx 
> >>>>> sound driver.
> >>>>>
> >>>>> Each time you start to record you have a 10% chance of having the 
> >>>>> recording completely distorted and having a metallic sound. When you 
> >>>>> look at the waveform it looks as though there are small segments with 
> >>>>> sharp transitions between them, a little like if these segments were 
> >>>>> moved a little from their correct place.
> >>>> No insights, but I confirm the bug with a TerraTec DMX XFire 1024 (CS4624).
> >>> Hm, cs46xx driver hasn't been much changes since long time ago (around
> >>> year 2005).  The only big change was about some PM fixes, and I don't
> >>> think it's relevant...  Could you run als-info.sh to get the status?
> >> At:
> >>
> >> http://pastebin.ca/939784
> > 
> > The output seems truncated.  Could you give the generated file via
> > "alsactl -f somefile store", just to be sure ?
> 
> Hmm, alsa-info.sh freshly downloaded from current hg.

Is the original data also truncated at the middle or is it a paste.bin
problem?

> 	control.26 {
> 		comment.access 'read write'
> 		comment.type INTEGER
> 		comment.count 2
> 		comment.range '0 - 32767'
> 		iface MIXER
> 		name 'ADC Volume'
> 		value.0 29492
> 		value.1 29492
> 	}

Try to put this to full once.


Takashi