At Fri, 21 Nov 2003 10:53:01 +0100,
wwp wrote:
> 
> Hi Ryan Underwood,
> 
> 
> On Thu, 20 Nov 2003 21:58:48 -0600 Ryan Underwood <[EMAIL PROTECTED]> wrote:
> 
> > 
> > Hi,
> > 
> > On Wed, Nov 19, 2003 at 10:10:43AM +0100, wwp wrote:
> > > Hi folks,
> > > 
> > > 
> > > I usually see the message below in /var/log/messages. Using alsa 0.9.8 over
> > > a SuSE 8.1's 2.4.19-4GB, modutils 2.4.26.
> > > It doesn't happen w/ all the played sounds. 
> > > 
> > > kernel: ALSA ../alsa-kernel/core/pcm_lib.c:216: Unexpected hw_pointer value
> > > (stream = 0, delta: -62, max jitter = 8192): wrong interrupt acknowledge?
> > > 
> > > Does this indicates a broken/incompatible .wav file, a bug or a config
> > > problem? AFAIR, I did see such msg w/ <0.9.6.
> > 
> > I receive lots of these too (hundreds of megs of logfiles) and have no
> > idea what causes them either.  Do you have any problems yourself with
> > stereo channels swapping/reversing sometimes, or some clicking in
> > playback?
> 
> Never tried. I don't play w/ sound features :-). No special bad behaviour
> except sound corruptions when accessing /proc/acpi stuff while a sound
> is played, or those hw_pointer errors in /var/log/messages w/ recent alsa
> stuff compiled from the sources (with <=0.9.6, no problem).

try 1.0.0pre version.  we'll no longer debug 0.9.x.

the above message is usually harmless.  it happens when the audio
interrupt isn't handled at the right time because of too long
interrupts block (such as ACPI access) or on sloppy hardwares.


Takashi


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