Re: Bluetooth on IBM T30 (USB device problem)

From: Bernd Walter <ticso_at_cicely9.cicely.de>
Date: Fri, 25 Apr 2003 20:31:22 +0200
On Wed, Mar 26, 2003 at 09:38:57AM -0800, Maksim Yevmenkin wrote:
> Hello Lee,
> 
> >I'm playing with Bluetooth on my T30 as well.  I've activated legacy
> >USB support in BIOS, but still get
> >
> >   Mar 26 08:41:03 tylendel kernel: uhub2: device problem, disabling port 1
> >
> >maybe 45-60 seconds after pressing the Bluetooth button.
> >
> >I'm running a kernel and world sup'd yesterday afternoon.  ugen is
> >included in the kernel config.   I will be heading to the archives 
> >of the mobile list in a second to see if I'm missing anything else.
> 
> just like i said, this is a USB issue, not Bluetooth.

Exactly - it's a hardware problem.

> could anyone from FreeBSD USB people *please* comment on that?

I've seen this kind of problem with several different hardware
combinations - it is not specific to Bluetooth.
One case known to me is a notebook internal MMC reader, which always
fails that way unless you connect any other device to any USB port.
In general it's a broken device which doesn't work within the specs
if triggered by EMV noise or whatever.
Very often this kind of problem is triggered by notebooks.
I've seen cases in which the oscillator design was just crap.
Normaly I would say: "drop it into your favourite wastebin", but Windows
shows us that it's possible to work around this kind of hardware bug.

> i still have all traces available at
> 
> http://www.geocities.com/m_evmenkin/usb/
> 
> in fact this option stop working for me today :( i do not know what
> happend but it worked a couple of times yesterday and now i'm back
> to "device problem, disabling port 1"
> 
> thanks,
> max
> 
> 
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-- 
B.Walter                   BWCT                http://www.bwct.de
ticso_at_bwct.de                                  info_at_bwct.de
Received on Fri Apr 25 2003 - 09:32:56 UTC

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