[sane-devel] when scanimage suddenly returns only white pages

[Sane User]

Sorry I'm pretty new to SANE, but it's been working great for months, then at some point between a few weeks ago and today, my same-old scripted "scanimage" command is returning nothing but blank pages.

Can anyone suggest a direction for my bugfixing?  I'm stumped.  Thanks in advance.

THE COMMAND:
scanimage -d "genesys:libusb:002:003" --format=tiff --resolution=300 --mode=Color > scan.tiff

THE OUTPUT:
http://imgur.com/EVAj8zQ  (see the streaks in there? any ideas?)

I'm on Arch Linux, and do the usual "pacman -Syu" to keep software up to date.  I've rebooted, and run these diagnostics that all seem OK:

# sane-find-scanner
found USB scanner (vendor=0x04a9 [Canon], product=0x1909 [CanoScan], chip=GL124) at libusb:002:003

# scanimage --list-devices
[bjnp] create_broadcast_socket: bind socket to local address failed - Cannot assign requested address
device `genesys:libusb:002:003' is a Canon LiDE 110 flatbed scanner

# scanimage -d "genesys:libusb:002:003" -T
scanimage: scanning image of size 636x885 pixels at 8 bits/pixel
scanimage: acquiring gray frame, 8 bits/sample
scanimage: reading one scanline, 636 bytes...	PASS
scanimage: reading one byte...		PASS
scanimage: stepped read, 2 bytes... 	PASS
scanimage: stepped read, 4 bytes... 	PASS
scanimage: stepped read, 8 bytes... 	PASS
scanimage: stepped read, 16 bytes... 	PASS
scanimage: stepped read, 32 bytes... 	PASS
scanimage: stepped read, 64 bytes... 	PASS
scanimage: stepped read, 128 bytes... 	PASS
scanimage: stepped read, 256 bytes... 	PASS
scanimage: stepped read, 512 bytes... 	PASS
scanimage: stepped read, 1024 bytes... 	PASS
scanimage: stepped read, 1023 bytes... 	PASS
scanimage: stepped read, 511 bytes... 	PASS
scanimage: stepped read, 255 bytes... 	PASS
scanimage: stepped read, 127 bytes... 	PASS
scanimage: stepped read, 63 bytes... 	PASS
scanimage: stepped read, 31 bytes... 	PASS
scanimage: stepped read, 15 bytes... 	PASS
scanimage: stepped read, 7 bytes... 	PASS
scanimage: stepped read, 3 bytes... 	PASS

# lsusb -v -d 04a9:1909
Bus 002 Device 003: ID 04a9:1909 Canon, Inc. CanoScan LiDE 110
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass       255 Vendor Specific Subclass
  bDeviceProtocol       255 Vendor Specific Protocol
  bMaxPacketSize0        64
  idVendor           0x04a9 Canon, Inc.
  idProduct          0x1909 CanoScan LiDE 110
  bcdDevice            7.01
  iManufacturer           1 Canon
  iProduct                2 CanoScan
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           39
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass    255 Vendor Specific Subclass
      bInterfaceProtocol    255 Vendor Specific Protocol
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval               8
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass       255 Vendor Specific Subclass
  bDeviceProtocol       255 Vendor Specific Protocol
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)