How to debug USB hardware issues

[Hans Petter Selasky]

On Saturday 05 November 2011 15:19:14 Alberto Mijares wrote:
> > What does dmesg say when this failure occurs?
> > 
> > Do you see the following sysctl:
> > 
> > sysctl hw.usb.no_cs_fail
> > 
> > I would start turn on debugging in the modem driver, compile kernel with
> > options USB_DEBUG, and then see what is printed at the time of failure.
> 
> Hi,
> 
> I already have USB_DEBUG option in kernel running and u3g debug. What
> info can I send you? I don't see anything relevant.
> 
> Thanks

Hi,

Have you tried:

sysctl hw.usb.u3g.debug=15

--HPS