sudo sane-find-scanner.out

This is sane-find-scanner from sane-backends 1.0.23

  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

searching for SCSI scanners:
checking /dev/scanner... failed to open (Invalid argument)
checking /dev/sg0... failed to open (Invalid argument)
checking /dev/sg1... failed to open (Invalid argument)
checking /dev/sg2... failed to open (Invalid argument)
checking /dev/sg3... failed to open (Invalid argument)
checking /dev/sg4... failed to open (Invalid argument)
checking /dev/sg5... failed to open (Invalid argument)
checking /dev/sg6... failed to open (Invalid argument)
checking /dev/sg7... failed to open (Invalid argument)
checking /dev/sg8... failed to open (Invalid argument)
checking /dev/sg9... failed to open (Invalid argument)
checking /dev/sga... failed to open (Invalid argument)
checking /dev/sgb... failed to open (Invalid argument)
checking /dev/sgc... failed to open (Invalid argument)
checking /dev/sgd... failed to open (Invalid argument)
checking /dev/sge... failed to open (Invalid argument)
checking /dev/sgf... failed to open (Invalid argument)
checking /dev/sgg... failed to open (Invalid argument)
checking /dev/sgh... failed to open (Invalid argument)
checking /dev/sgi... failed to open (Invalid argument)
checking /dev/sgj... failed to open (Invalid argument)
checking /dev/sgk... failed to open (Invalid argument)
checking /dev/sgl... failed to open (Invalid argument)
checking /dev/sgm... failed to open (Invalid argument)
checking /dev/sgn... failed to open (Invalid argument)
checking /dev/sgo... failed to open (Invalid argument)
checking /dev/sgp... failed to open (Invalid argument)
checking /dev/sgq... failed to open (Invalid argument)
checking /dev/sgr... failed to open (Invalid argument)
checking /dev/sgs... failed to open (Invalid argument)
checking /dev/sgt... failed to open (Invalid argument)
checking /dev/sgu... failed to open (Invalid argument)
checking /dev/sgv... failed to open (Invalid argument)
checking /dev/sgw... failed to open (Invalid argument)
checking /dev/sgx... failed to open (Invalid argument)
checking /dev/sgy... failed to open (Invalid argument)
checking /dev/sgz... failed to open (Invalid argument)
  # No SCSI scanners found. If you expected something different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

searching for USB scanners:
checking /dev/usb/scanner... failed to open (Invalid argument)
checking /dev/usb/scanner0... failed to open (Invalid argument)
checking /dev/usb/scanner1... failed to open (Invalid argument)
checking /dev/usb/scanner2... failed to open (Invalid argument)
checking /dev/usb/scanner3... failed to open (Invalid argument)
checking /dev/usb/scanner4... failed to open (Invalid argument)
checking /dev/usb/scanner5... failed to open (Invalid argument)
checking /dev/usb/scanner5... failed to open (Invalid argument)
checking /dev/usb/scanner7... failed to open (Invalid argument)
checking /dev/usb/scanner8... failed to open (Invalid argument)
checking /dev/usb/scanner9... failed to open (Invalid argument)
checking /dev/usb/scanner10... failed to open (Invalid argument)
checking /dev/usb/scanner11... failed to open (Invalid argument)
checking /dev/usb/scanner12... failed to open (Invalid argument)
checking /dev/usb/scanner13... failed to open (Invalid argument)
checking /dev/usb/scanner14... failed to open (Invalid argument)
checking /dev/usb/scanner15... failed to open (Invalid argument)
checking /dev/usbscanner... failed to open (Invalid argument)
checking /dev/usbscanner0... failed to open (Invalid argument)
checking /dev/usbscanner1... failed to open (Invalid argument)
checking /dev/usbscanner2... failed to open (Invalid argument)
checking /dev/usbscanner3... failed to open (Invalid argument)
checking /dev/usbscanner4... failed to open (Invalid argument)
checking /dev/usbscanner5... failed to open (Invalid argument)
checking /dev/usbscanner6... failed to open (Invalid argument)
checking /dev/usbscanner7... failed to open (Invalid argument)
checking /dev/usbscanner8... failed to open (Invalid argument)
checking /dev/usbscanner9... failed to open (Invalid argument)
checking /dev/usbscanner10... failed to open (Invalid argument)
checking /dev/usbscanner11... failed to open (Invalid argument)
checking /dev/usbscanner12... failed to open (Invalid argument)
checking /dev/usbscanner13... failed to open (Invalid argument)
checking /dev/usbscanner14... failed to open (Invalid argument)
checking /dev/usbscanner15... failed to open (Invalid argument)
trying libusb:

<device descriptor of 0x0bda/0x0139 at 001:005 (Generic USB2.0-CRW)>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          255
bDeviceSubClass       255
bDeviceProtocol       255
bMaxPacketSize0       64
idVendor              0x0BDA
idProduct             0x0139
bcdDevice             57.60
iManufacturer         1 (Generic)
iProduct              2 (USB2.0-CRW)
iSerialNumber         3 (20100201396000000)
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         39
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       4 (CARD READER)
 bmAttributes         160 (Remote Wakeup)
 MaxPower             500 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      3
   bInterfaceClass    255
   bInterfaceSubClass 6
   bInterfaceProtocol 80
   iInterface         5 (Bulk-In, Bulk-Out, Interface)
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x01 (out 0x01)
    bmAttributes      2 (bulk)
    wMaxPacketSize    512
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 1>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x82 (in 0x02)
    bmAttributes      2 (bulk)
    wMaxPacketSize    512
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 2>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x83 (in 0x03)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    3
    bInterval         10 ms
    bRefresh          0
    bSynchAddress     0
found USB scanner (vendor=0x0bda [Generic], product=0x0139 [USB2.0-CRW]) at libusb:001:005

<device descriptor of 0x064e/0xf300 at 001:004 (SuYin USB 2.0 UVC 0.3M Webcam)>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          239
bDeviceSubClass       2
bDeviceProtocol       1
bMaxPacketSize0       64
idVendor              0x064E
idProduct             0xF300
bcdDevice             2.17
iManufacturer         1 (SuYin)
iProduct              2 (USB 2.0 UVC 0.3M Webcam)
iSerialNumber         3 (HF031B-J13C-SE02-VS-R02.01.07)
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         391
 bNumInterfaces       2
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         128 ()
 MaxPower             150 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      1
   bInterfaceClass    14
   bInterfaceSubClass 1
   bInterfaceProtocol 0
   iInterface         4 (USB 2.0 UVC 0.3M Webcam)
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x83 (in 0x03)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    12
    bInterval         16 ms
    bRefresh          0
    bSynchAddress     0
  <interface 1>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   1
   bAlternateSetting  0
   bNumEndpoints      0
   bInterfaceClass    14
   bInterfaceSubClass 2
   bInterfaceProtocol 0
   iInterface         0 ()
   <altsetting 1>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   1
   bAlternateSetting  1
   bNumEndpoints      1
   bInterfaceClass    14
   bInterfaceSubClass 2
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      5 (isochronous)
    wMaxPacketSize    512
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0
   <altsetting 2>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   1
   bAlternateSetting  2
   bNumEndpoints      1
   bInterfaceClass    14
   bInterfaceSubClass 2
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      5 (isochronous)
    wMaxPacketSize    1024
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0
   <altsetting 3>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   1
   bAlternateSetting  3
   bNumEndpoints      1
   bInterfaceClass    14
   bInterfaceSubClass 2
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      5 (isochronous)
    wMaxPacketSize    2816
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0
   <altsetting 4>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   1
   bAlternateSetting  4
   bNumEndpoints      1
   bInterfaceClass    14
   bInterfaceSubClass 2
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      5 (isochronous)
    wMaxPacketSize    3072
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0
   <altsetting 5>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   1
   bAlternateSetting  5
   bNumEndpoints      1
   bInterfaceClass    14
   bInterfaceSubClass 2
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      5 (isochronous)
    wMaxPacketSize    4864
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0
   <altsetting 6>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   1
   bAlternateSetting  6
   bNumEndpoints      1
   bInterfaceClass    14
   bInterfaceSubClass 2
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      5 (isochronous)
    wMaxPacketSize    5120
    bInterval         1 ms
    bRefresh          0
    bSynchAddress     0

<device descriptor of 0x07b3/0x0465 at 001:003 (600dpi USB Scanner)>
bLength               18
bDescriptorType       1
bcdUSB                1.10
bDeviceClass          0
bDeviceSubClass       0
bDeviceProtocol       0
bMaxPacketSize0       64
idVendor              0x07B3
idProduct             0x0465
bcdDevice             5.01
iManufacturer         0 ()
iProduct              1 (600dpi USB Scanner)
iSerialNumber         0 ()
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         32
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         160 (Remote Wakeup)
 MaxPower             500 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      2
   bInterfaceClass    255
   bInterfaceSubClass 255
   bInterfaceProtocol 255
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      2 (bulk)
    wMaxPacketSize    64
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0
    <endpoint 1>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x02 (out 0x02)
    bmAttributes      2 (bulk)
    wMaxPacketSize    64
    bInterval         0 ms
    bRefresh          0
    bSynchAddress     0

<device descriptor of 0x8087/0x0024 at 001:002>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          9
bDeviceSubClass       0
bDeviceProtocol       1
bMaxPacketSize0       64
idVendor              0x8087
idProduct             0x0024
bcdDevice             0.00
iManufacturer         0 ()
iProduct              0 ()
iSerialNumber         0 ()
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         25
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         224 (Self-poweredRemote Wakeup)
 MaxPower             0 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      1
   bInterfaceClass    9
   bInterfaceSubClass 0
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    2
    bInterval         12 ms
    bRefresh          0
    bSynchAddress     0

<device descriptor of 0x1d6b/0x0002 at 001:001 (Linux 3.13.0-62-generic ehci_hcd EHCI Host Controller)>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          9
bDeviceSubClass       0
bDeviceProtocol       0
bMaxPacketSize0       64
idVendor              0x1D6B
idProduct             0x0002
bcdDevice             3.13
iManufacturer         3 (Linux 3.13.0-62-generic ehci_hcd)
iProduct              2 (EHCI Host Controller)
iSerialNumber         1 (0000:00:1d.0)
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         25
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         224 (Self-poweredRemote Wakeup)
 MaxPower             0 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      1
   bInterfaceClass    9
   bInterfaceSubClass 0
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    4
    bInterval         12 ms
    bRefresh          0
    bSynchAddress     0

<device descriptor of 0x1d6b/0x0003 at 003:001 (Linux 3.13.0-62-generic xhci_hcd xHCI Host Controller)>
bLength               18
bDescriptorType       1
bcdUSB                3.00
bDeviceClass          9
bDeviceSubClass       0
bDeviceProtocol       3
bMaxPacketSize0       9
idVendor              0x1D6B
idProduct             0x0003
bcdDevice             3.13
iManufacturer         3 (Linux 3.13.0-62-generic xhci_hcd)
iProduct              2 (xHCI Host Controller)
iSerialNumber         1 (0000:03:00.0)
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         31
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         224 (Self-poweredRemote Wakeup)
 MaxPower             0 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      1
   bInterfaceClass    9
   bInterfaceSubClass 0
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    4
    bInterval         12 ms
    bRefresh          0
    bSynchAddress     0

<device descriptor of 0x1d6b/0x0002 at 002:001 (Linux 3.13.0-62-generic xhci_hcd xHCI Host Controller)>
bLength               18
bDescriptorType       1
bcdUSB                2.00
bDeviceClass          9
bDeviceSubClass       0
bDeviceProtocol       1
bMaxPacketSize0       64
idVendor              0x1D6B
idProduct             0x0002
bcdDevice             3.13
iManufacturer         3 (Linux 3.13.0-62-generic xhci_hcd)
iProduct              2 (xHCI Host Controller)
iSerialNumber         1 (0000:03:00.0)
bNumConfigurations    1
 <configuration 0>
 bLength              9
 bDescriptorType      2
 wTotalLength         25
 bNumInterfaces       1
 bConfigurationValue  1
 iConfiguration       0 ()
 bmAttributes         224 (Self-poweredRemote Wakeup)
 MaxPower             0 mA
  <interface 0>
   <altsetting 0>
   bLength            9
   bDescriptorType    4
   bInterfaceNumber   0
   bAlternateSetting  0
   bNumEndpoints      1
   bInterfaceClass    9
   bInterfaceSubClass 0
   bInterfaceProtocol 0
   iInterface         0 ()
    <endpoint 0>
    bLength           7
    bDescriptorType   5
    bEndpointAddress  0x81 (in 0x01)
    bmAttributes      3 (interrupt)
    wMaxPacketSize    4
    bInterval         12 ms
    bRefresh          0
    bSynchAddress     0
  # Your USB scanner was (probably) detected. It may or may not be supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary ports
  # can't be detected by this program.
done