我已经将Ubuntu16.04更新为Ubuntu18.04.1 LTS，现在扫描仪EPSON Perfection v33存在问题。我尝试像对ubuntu 16.04（http://www.mogilowski.net/lang/en-us/2014/05/14/install-epson-perfection-v33-scanner-on-ubuntu-14-04/）一样进行安装，但是“图像扫描”看不到扫描仪（无法向扫描仪发送命令。检查扫描仪的状态）。
“ sudo sane-find-scanner”找到了扫描仪：
found USB scanner (vendor=0x0bda [Generic], product=0x0129 [USB2.0-CRW]) at libusb:001:004
found USB scanner (vendor=0x04b8 [EPSON], product=0x0142 [EPSON Perfection V33/V330]) at libusb:001:011
但是“ scanimage -L”看不到：
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
Ubuntu18中的usb-scanner遇到类似的问题，或者有任何解决办法？