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Message-Id: <200302141726.h1EHQch7000692@btl.42.org>
Date: Fri, 14 Feb 2003 18:26:38 +0100 (CET)
From: Stefan `Sec` Zehl <sec@42.org>
To: FreeBSD-gnats-submit@FreeBSD.org
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Subject: i386/48283: sound (pcm/sbc) broken with acpi
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>Number:         48283
>Category:       i386
>Synopsis:       sound (pcm/sbc) broken with acpi
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Feb 14 09:30:12 PST 2003
>Closed-Date:
>Last-Modified:
>Originator:     Stefan `Sec` Zehl
>Release:        FreeBSD 5.0-CURRENT i386
>Organization:
>Environment:
System: FreeBSD btl 5.0-CURRENT FreeBSD 5.0-CURRENT #3: Fri Feb 14 17:39:25 CET 2003 root@btl:/usr/obj/usr/src/sys/BTL i386

FreeBSD 5.0-Current freshly cvsup'd and make world/kernel'd

A Sounblaster AWE64 card 

sbc0: <Creative SB AWE64> at port 0x388-0x38b,0x330-0x331,0x220-0x22f irq 5 drq 5,1 on isa0
pcm0: <SB16 DSP 4.16> on sbc0

>Description:

This card does fine in FreeBSD-4.7, but fails in FreeBSD-5.0 (with ACPI
enabled, which is the default). When trying to access the audio device,
all I hear is a single 'pop' and the following log message:

pcm0:play:0: play interrupt timeout, channel dead

>How-To-Repeat:
	
>Fix:

A workaround is to disable ACPI by adding 'hint.acpi.0.disabled="1"' to
/boot/loader.conf

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

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