Re: Jackd Problems -- alsa_pcm: xrun of at least 1227061150613.504 msecs

[Paulo Cavalcanti]

On Sat, Jan 3, 2009 at 5:13 AM, Jonathan Ryshpan <jonrysh(a)pacbell.net&gt;wrote:

>  On Wed, 2008-11-19 at 18:49 -0200, Paulo Cavalcanti wrote:
>
>  > On Wed, Nov 19, 2008 at 1:28 AM, Jonathan Ryshpan <jonrysh(a)pacbell.net&gt;
>  wrote:
>  >         In the past I've never had any problems running jackd.  Now I'm
>  getting
>  >         a very large number of messages reading:
>  >                **** alsa_pcm: xrun of at least 1227061150613.504 msecs
>  >         I'm running F9 on an x86_64 system with all updates installed.
>  >         Pulseaudio is not running.  Jackd is started via qjackctl.  No
>  past
>  >         problems with audio beyond the usual conflicts between pulseaudio
>  and
>  >         firefox.
>  >
>  >         Questions:
>  >         (1) What exactly does this message mean?  An "xrun" is a buffer
>  under-
>  >         or over-run -- but what does the time interval represent?
>  >
>  >         (2) Whatever the time interval means, it looks rather large.
>  >         1227061150613.504 msec is many days (or maybe years if msec means
>  >         millisec and not microsec)  This looks like a misconfiguration of
>  some
>  >         kind or a missing component.  Any idea what it might be?
>  >
>  >
>  > The solution depends on your card (I have an Intel onboard card).
>  > But this material may give you an idea on what you can try:
>  >
>  >
>
> http://people.atrpms.net/~pcavalcanti/alsa-1.0.15rc2_snd-hda-intel.html#j...
>
>  Thanks for the very useful pointer.  Now I am stuck on what ought to be
>  a very simple problem:  What "option"s can be given to my own driver (or
>  generally any alsa driver)?  My own driver appears to be snd_intel8x0,
>  which is documented at
>         http://www.alsa-project.org/main/index.php/Matrix:Module-intel8x0
>  Unfortunately the "parm:"s (supposing these the possible arguments to an
>  "option" statement in modules.conf) don't seem to include all possible
>  options to be applied to this module.
>
>  Sorry for being so dense - jon
>
>  
 modinfo snd_intel8x0


-- 
Paulo Roma Cavalcanti
LCG - UFRJ