problems with Pro Tools


Subject: problems with Pro Tools
From: Rainer Bürck (Rainer.Buerck@gmx.de)
Date: Tue May 03 2005 - 16:36:48 EDT


Hi,

Some weeks ago I purchased a Mac G5 (2x1.8 GHz) computer and Pro Tools 6.7
LE with MBox. I encountered a problem several times when I played a
session or recorded to it. The process then would stop and issue the
following message:

"CPU usage is holding off USM audio. Remove some plug-ins, delete some
tracks, or increase the "H/W Buffer Size" in the Playback Engine dialog (
-9130)".

1. I am not using any plug-ins so far

2. the problem occurs even if I use only 2 tracks ( so this shouldn't be a
problem for a G5!!!!!)

3. I changed the "H/W Buffer Size" to several values, but this didn't
seem to have any impact.

This problem seems to occur arbitrarily. Sometimes I can playback a
session without any problem; another time the mentioned problems occur
when doing exactly the same. The same thing happens when recording or
bouning a session to disk: sometimes it works, sometimes it crashes.

Does anybody have an idea what could be the reason and how I could fix the
problem?

Thanks,

Rainer

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