I am also running into the same problem in Ubuntu 14.04. The error message is
the same in dmesg
[ 5313.032199] usb 1-3.3: new high-speed USB device number 24 using xhci_hcd
[ 5313.064156] usb 1-3.3: New USB device found, idVendor=04c5, idProduct=11a2
[ 5313.064161] usb 1-3.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[ 5313.064163] usb 1-3.3: Product: ScanSnap S1500
[ 5313.064165] usb 1-3.3: Manufacturer: Fujitsu
[ 5313.064317] usb 1-3.3: ep 0x81 - rounding interval to 128 microframes, ep
desc says 255 microframes
[ 5313.064322] usb 1-3.3: ep 0x2 - rounding interval to 128 microframes, ep
desc says 255 microframes
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
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https://bugs.launchpad.net/bugs/1102797
Title:
04c5:11a2 Fujitsu ScanSnap S1500 does not work on USB3 ports
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