Issue detecting with USB 3.0 device on USB 2.0 port

[Hans Petter Selasky]

On 09/11/13 08:01, Kannan Manickam wrote:
> Hello guys,
>
> I recently bought a Samsung D3 station 3 TB USB 3.0 external drive and
> tried to hook it up to my laptop which runs freebsd 9.1 and only has USB
> 2.0 ports. The device is not detected (shown as not configured) on my
> laptop. I see the following in the `dmesg`:
>
> ugen6.3: <Samsung> at usbus6
> umass1: <Samsung D3 Station, class 0/0, rev 2.10/2.00, addr 3> on usbus6
> umass1:  SCSI over Bulk-Only; quirks = 0x0100
> umass1:6:1:-1: Attached to scbus6
> ugen6.3: <Samsung> at usbus6 (disconnected)
> umass1: at uhub6, port 2, addr 3 (disconnected)
> (da1:umass-sim1:1:0:0): lost device - 0 outstanding, 2 refs
> (da1:umass-sim1:1:0:0): got CAM status 0xa
> (da1:umass-sim1:1:0:0): fatal error, failed to attach to device
> (pass3:umass-sim1:1:0:0): passdevgonecb: devfs entry is gone
>
>
> `camcontrol devlist` doesn't list this device.
>
> I tried disconnecting and reconnecting the device many times but no luck.
> This device works fine with other Operating systems with both USB 2.0 as
> well as USB 3.0. The device has a separate power supply so it doesn't rely
> on the USB power. I tried browsing through various forums but couldn't find
> any solution.
>
> Any thoughts on how to resolve this issue will be greatly appreciated.

Hi,

Try running:

usbdump -i usbus6 -f 3 -s 65536 -vvv

Before hooking up the device and see what is going on.

--HPS