Same here with Lide 25.
Additionally the scanner was not recognized by udev and I had to add the following to /etc/udev/rules.d/45-libsane.rules: # Canon CanoScan N670U/N676U/LiDE20 SYSFS{idVendor}=="04a9", SYSFS{idProduct}=="2220", MODE="664", GROUP="scanner"
Same here with Lide 25.
Additionally the scanner was not recognized by udev and I had to add the following to /etc/udev/ rules.d/ 45-libsane. rules: =="04a9" , SYSFS{idProduct }=="2220" , MODE="664", GROUP="scanner"
# Canon CanoScan N670U/N676U/LiDE20
SYSFS{idVendor}