[CentOS] What is connect-debounce wrt usb?

William L. Maltby CentOS4Bill at triad.rr.com
Mon Jan 14 20:29:19 UTC 2008


On Mon, 2008-01-14 at 14:55 -0500, Robert Moskowitz wrote:
> I get the following message on a Centos 5 system (really a Trixbox 2.4 
> build on Centos 5):
> 
> Jan 14 00:12:28 sip2 kernel: hub 1-0:1.0: connect-debounce failed, port 
> 1 disabled
> 
> 
> What does this mean?

In this context, I'm not sure. But nback in the day of electro-
mechanical switches for the phone system, there were a lot of circuits
involved in suppressing the electrical "jitter" that occurs as
electrical contacts "make". Maybe there is some setting you need in some
piece of software to extend the suppression time? Maybe your usb port is
"sloppy" and the contacts are making to much "noise" when you plug
things in?

Have you tried having everything all plugged in when you fire the box
up? Does there seem to be excessive "wiggle" in the connectors?

I know absolutely nothing else I can volunteer.

> <snip>

HTH
-- 
Bill




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