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Date: Tue, 27 Feb 2001 18:27:22 -0800 (PST)
From: stannous@cisco.com
To: freebsd-gnats-submit@FreeBSD.org
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Subject: i386/25442: T20 CS4624/CS4297a sound problems: "pcm0: play interrupt timeout, channel dead"
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>Number:         25442
>Category:       i386
>Synopsis:       T20 CS4624/CS4297a sound problems: "pcm0: play interrupt timeout, channel dead"
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Feb 27 18:30:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Sam Tannous
>Release:        4.2-Release Stable
>Organization:
Me
>Environment:
FreeBSD x1.cisco.com 4.2-RELEASE FreeBSD 4.2-RELEASE #0: 
Thu Feb 22 09:26:44 EST 2001     
stannous@x1.cisco.com:/usr/src/sys/compile/MYKERNEL  i386

>Description:
I have a CS4624/CS4297a.  (It's a T20, model 2647 44U)

I'm having problems getting sound working properly:
I've almost got it working but
when I play an mp3 file (or use XMMS), I get:
   
   pcm0: play interrupt timeout, channel dead

I'm using FreeBSD 4.2 Stable and I recompiled
the kernel with (and all the permutations of...)
options PNPBIOS
device  pcm
> cat /dev/sndstat 
FreeBSD Audio Driver (newpcm) Feb  7 2001 22:00:05
Installed devices:
pcm0: <CS461x PCM Audio> at irq 11 (1p/1r channels duplex)
> 
   
>How-To-Repeat:
Compile the 4.2 Release kernel on the IBM T20 (model 2647 44U)
(which IBM claims is a CS4624/CS4297a chip).  Then reboot,
and play an mp3 file.  You should hear nothing and see 

pcm0: play interrupt timeout, channel dead

in your /var/log/messages.  

The mixer seems to work fine (contolling volume on the 
CD player) and I can play CD's and 
hear the music. 
>Fix:
None that I know of.  I've asked on freebsd-questions and 
freebsd-mobile and the consensus is that it's a bug.

(let me know if you need a tester).
Regards,
Sam
>Release-Note:
>Audit-Trail:
>Unformatted:
 >dmesg
 
 ...
 pci0: <unknown card> (vendor=0x115d, dev=0x000c) at 3.1 irq 11
 csa0: <Crystal Semiconductor CS4614/4622/4624 Audio accelerator/4280 Audio controller> mem 0xe8000000-0xe80fffff,0xe8122000-0xe8122fff irq 11 at device 5.0 on pci0
 pcm0: <CS461x PCM Audio> on csa0
 ...
 
 
 

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