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

Paulo Cavalcanti promac at gmail.com
Wed Nov 19 20:49:45 UTC 2008

On Wed, Nov 19, 2008 at 1:28 AM, Jonathan Ryshpan <jonrysh at pacbell.net>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:


Paulo Roma Cavalcanti
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