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Message-Id: <200210270018.g9R0I1UF034903@www.freebsd.org>
Date: Sat, 26 Oct 2002 17:18:01 -0700 (PDT)
From: Kevin Van Maren <kevin.vanmaren@unisys.com>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: kern/44512: pcm driver generates static half the time
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>Number:         44512
>Category:       kern
>Synopsis:       pcm driver generates static half the time
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Oct 26 17:20:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Kevin Van Maren
>Release:        4.7-stable
>Organization:
>Environment:
FreeBSD 4.7-RC
>Description:

sbc0: <ESS ES1869 (Compaq OEM)> at port 0x220-0x22f,0x388-0x38b,0x330-0x331 irq 5 drq 1,5 on isa0
pcm0: <ESS 18xx DSP> on sbc0

Running -stable on Compaq Armada 1750 notebook computer.
The pnp sbc driver finds the ess sound card and attaches pcm.
However, the sound sometimes (> 50%) comes out as static.
Perhaps there is something funny required to initialize or
set the mode for the card?


>How-To-Repeat:
That is the tough one.  It occurs seemingly at random; if if works,
it seems to stay working while the device is open, but may fail on
the next use.  KDE seems to be more likely to fail that pcmplay, but
KDE often works.  suspend/resume kicks the card, so it may start or
stop working as well.

>Fix:
Unknown.  Is there anything I can do to help track down the problem?


>Release-Note:
>Audit-Trail:
>Unformatted:

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