Re: How is /dev/bus/usb created - /dev/bus/usb lost during system upgrade

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On Thu, Mar 18, 2010 at 11:03, Petr Kubánek <petr@xxxxxxxxxxx> wrote:
> udevadm test /bus/usb/devices/1-0:1.0

> e.g. DEVICE is missing. /proc/bus/usb is empty on Watcher and missing on
> my laptop (where lsusb works).

DEVICE is a property of the deprecated usbfs, it is not related to
udev and can be ignored.

You need to run "udevadm test" on a usb-device, not on a
usb-interface. Interfaces have no device nodes. There must be no ":"
in the device name.

Kay
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