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Date: Sat, 11 Dec 2004 22:00:54 +0100
From: Gert Cuykens <gert.cuykens@gmail.com>
To: Thomas-Martin Seck <tmseck-lists@netcologne.de>
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References: <20041210155518.O63382@carver.gumbysoft.com>
	 <20041211155825.16409.qmail@laurel.tmseck.homedns.org>
cc: freebsd-current@freebsd.org
Subject: Re: FreeBSD sound distortion problems with SB Live! fixed with
	PREEMPTION
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On 11 Dec 2004 15:58:25 -0000, Thomas-Martin Seck
<tmseck-lists@netcologne.de> wrote:
> * Doug White <dwhite@gumbysoft.com>:
> 
> > I purchased a SBLive 5.1 and ran tests with it in a Dell PowerEdge 1750
> > (2x2.4GHz Xeon) the last time we had complaints about sound jitteryness
> > and I wasn't able to reproduce it, even with heavy buildworld load.
> > Guess its time to pull the card out and give it another try (after I just
> > pulled it out of the machine yesterday...)
> 
> Do add another datapoint here:
> 
> Playing an mp3 with mpg321 from the console while doing a 'make extract'
> or even 'make clean' in www/firefox is sufficient for reproducing the
> sound related issues here.  (This is pIII-550 with a Soundblaster card
> (ES137x driver), 4BSD scheduler and an IDE disk on a Promise PDC20268
> UDMA100 controller).  With PREEMPTION enabled, the playback is slowed
> down noticeably, pops and clicks are rare, though. Without PREEMPTION
> enabled, mp3 output was severely distorted even when not much system
> activity happened beyond running mpg321.
> 
> 
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> 

i think i have the same problem expect on my sk8n onboard sound (ich
driver) i have total distortion all the time.

help please, me would like sound very much :)