While trying x86 driver, I have to keep x86_64 version of kipi-plugins-acquireimage and libksane0 because changing to 32 bits need to change many other things. I installed the 32 bits scanner driver. I still have a warning that the driver may failed on 64 bits system. It does not work. # lsusb Bus 002 Device 004: ID 04b8:0130 Seiko Epson Corp. GT-X770 [Perfection V500] OK # sane-find-scanner -v This is sane-find-scanner from sane-backends 1.0.24 # 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. found USB scanner (vendor=0x04b8 [EPSON], product=0x0130 [EPSON Scanner]) at libusb:002:004 # 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 OK # scanimage -L device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner device `epkowa:interpreter:002:004' is a Epson (unknown model) flatbed scanner OK # scanimage -vvv -T scanimage: open of device epkowa:interpreter:002:004 failed: Invalid argument Calling sane_exit scanimage: finished