On 07/11/10 17:39, lee wrote:
> Hi,
> 
> my UPS (HP T750 intl) which is plugged into an USB port with the
> supplied USB cable is not detected. Nothing happens when I plug it out
> or in, and I tried different USB ports. It´s the only USB device
> connected, and lsusb only shows the host controllers but no USB
> devices.
> 
> Other USB devices like card readers and USB disks work. Am I missing
> some module?
> 
> 
> r...@yun:~# lsmod |grep usb
> usbhid                 14977  0
> hid                    32891  1 usbhid
> usbcore               103361  3 usbhid,ehci_hcd,xhci
> 
> 

lsusb gives you a bus number and a device number eg.
Bus 005 Device 002: ID 0463:ffff MGE UPS Systems UPS

what is the resukt of ls -l /dev/bus/usb/<bus number>/<device number>
(for preceding example, I get
crw-rw-r-- 1 root nut 189, 513 Nov  7 20:39 /dev/bus/usb/005/002, and it
is the only device for my UPS).


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