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SubjectRe: usb device not showing up
On Tue, 4 Nov 2008, Norbert Preining wrote:

> On Di, 04 Nov 2008, Alan Stern wrote:
> > > > If you can't boot with the modem off, then try this instead: Unload
> > > > ehci-hcd, uhci-hcd, and ohci-hcd, then start up usbmon (copy the 0u
> > > > file) and reload whichever driver the modem attaches to.
> Ok, here it is. Booted with init=/bin/bash, no modules loaded, mounted
> /sys and debugfs, cat u0 > usbmon.txt. Then load uhci-hcd, then load hso
> modules.
> Finally, kill the cat process.
> Output is the attached usmon.txt file.

Well, this is a little odd. The trace shows the modem was detected and
enumerated correctly. But there's nothing corresponding to when you
loaded the hso driver. In fact, there's nothing after uhci-hcd
finished starting up and the unconnected root hubs were suspended.

Did you look in /proc/bus/usb/devices at this point? And what about
the files in /sys/bus/usb/drivers/hso/?

This suggests the problem may lie in the hso driver itself, or in a
failure to bind the driver to the device.

Alan Stern

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