External USB HDD Not Working

[Antun Matanovic]

As it is visible from dmesg the device doesn't get attached at all. In 
addition, the computer freezes briefly as I turn the device on.

Perhaps it is worth mentioning that the device works just fine on Linux.

dmesg:
ugen6.2: <Sunplus Technology Inc.> at usbus6
umass0: <Bulk Only Interface> on usbus6
umass0:  SCSI over Bulk-Only; quirks = 0x4000
umass0:0:0:-1: Attached to scbus0
(da0:umass-sim0:0:0:0): AutoSense failed
(da0:umass-sim0:0:0:0): got CAM status 0x10
(da0:umass-sim0:0:0:0): fatal error, failed to attach to device
(da0:umass-sim0:0:0:0): lost device
(da0:umass-sim0:0:0:0): AutoSense failed
(da0:umass-sim0:0:0:0): removing device entry

usbconfig -u 6 -a 2 dump_curr_config_desc:
ugen6.2: <USB to Serial-ATA bridge Sunplus Technology Inc.> at usbus6, cfg=0 
md=HOST spd=HIGH (480Mbps) pwr=ON


 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x0020 
    bNumInterfaces = 0x0001 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0004  <Bulk Only Configuration>
    bmAttributes = 0x00c0 
    bMaxPower = 0x0001 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x0008 
      bInterfaceSubClass = 0x0006 
      bInterfaceProtocol = 0x0050 
      iInterface = 0x0005  <Bulk Only Interface>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0002  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0200 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

usbconfig -u 6 -a 2 dump_device_desc
ugen6.2: <USB to Serial-ATA bridge Sunplus Technology Inc.> at usbus6, cfg=0 
md=HOST spd=HIGH (480Mbps) pwr=ON

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x0000 
  bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x04fc 
  idProduct = 0x0c15 
  bcdDevice = 0xc683 
  iManufacturer = 0x0002  <Sunplus Technology Inc.>
  iProduct = 0x0003  <USB to Serial-ATA bridge>
  iSerialNumber = 0x0001  <Maxtor 6V2V599R1GG            >
  bNumConfigurations = 0x0001