Re: System hang (and other problems) with cdc_acm

From: Oliver Neukum
Date: Mon Jan 26 2009 - 03:45:34 EST

Am Monday 26 January 2009 09:19:04 schrieb Michelle Konzack:
> > > to debug this; the Caps Lock light isn't flashing, so I'm not sure if
> > > it's a panic or just a hang. ÂSecond, if I read one of the TTYs using
> > > "cat", I get a ton of blank lines. ÂTo make any sense of the data
> > > stream, I have to do cat /dev/ttyACM0 | grep -v "^$".
> > >
> > > If anyone could help me debug this, I'd be greatly appreciative.
> Same problem here...
> My Router is based on Debian Etch with
> Linux router 2.6.18-6-686 #1 SMP Fri Dec 12 16:48:28 UTC 2008 i686 GNU/Linux
> and even if I install 2.6.26 it is the same effect.
> I am using a cell-phone "Nokia 6120 classic" and my german GSM ÂProvider
> is O2/Telefonica. ÂI get without any problems Â550 kByte/Sec, Âbut Âthen
> from one second to another 2-5 kByte/Sec.

What makes you think that it is the same problem? It doesn't hang your
system, does it? If so, can you please post "dmesg" of one of the incidents
and "lsusb -v"?


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