From sane-find-scanner I get:
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# 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.
# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a kernel SCSI driver for your SCSI adapter.
could not fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
# No USB scanners found. If you expected something different, make sure that
# you have loaded a kernel driver for your USB host controller and have setup
# the USB system correctly. See man sane-usb for details.
# Not checking for parallel port scanners.
# Most Scanners connected to the parallel port or other proprietary ports
# can't be detected by this program.
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Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 004: ID 0416:5518 Winbond Electronics Corp. 4-Port Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 1241:1122 Belkin Typhoon Stream Optical Mouse USB+PS/2
Bus 001 Device 004: ID 045e:00dd Microsoft Corp. Comfort Curve Keyboard 2000 V1.0
Bus 003 Device 005: ID 04c5:11a2 Fujitsu, Ltd
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Bus 003 Device 005: ID 04c5:11a2 Fujitsu, Ltd
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x04c5 Fujitsu, Ltd
idProduct 0x11a2
bcdDevice 1.00
iManufacturer 1 Fujitsu
iProduct 2 ScanSnap S1500
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 98mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
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 0x0040 1x 64 bytes
bInterval 255
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 255
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
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Nov 19 12:17:01 Natasha kernel: [ 2969.228450] usb 3-4: >new high-speed USB device number 8 using xhci_hcd
Nov 19 12:17:01 Natasha kernel: [ 2969.260191] usb 3-4: >New USB device found, idVendor=04c5, idProduct=11a2
Nov 19 12:17:01 Natasha kernel: [ 2969.260196] usb 3-4: >New USB device strings: Mfr=1, Product=2, SerialNumber=0
Nov 19 12:17:01 Natasha kernel: [ 2969.260199] usb 3-4: >Product: ScanSnap S1500
Nov 19 12:17:01 Natasha kernel: [ 2969.260201] usb 3-4: >Manufacturer: Fujitsu
Nov 19 12:17:01 Natasha kernel: [ 2969.260476] usb 3-4: >ep 0x81 - rounding interval to 128 microframes, ep desc says 255 microframes
Nov 19 12:17:01 Natasha kernel: [ 2969.260481] usb 3-4: >ep 0x2 - rounding interval to 128 microframes, ep desc says 255 microframes
Any ideas?