On Wed, 3 Oct 2007, Dominique Dumont wrote:

> Alan Stern <[EMAIL PROTECTED]> writes:
> 
> > You may find it helps to turn off HAL before running your tests, 
> > because HAL does constant probing of USB storage devices.
> 
> Is this probing limited to storage devices or does it occur to any usb
> device ? (say a dvb-t device ;-) )

As far as I know, HAL probes only storage devices.  It does so because 
it is looking for media changes.

> If the latter, how can I trace this probing ? With usbmon or is there
> a simpler mechanism ?

You can always use usbmon.  For storage devices there is a simpler 
alternative: enable CONFIG_USB_STORAGE_DEBUG.

Alan Stern


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