My personal scratchpad
- install Brother driver brscan2 (including adding the line brother2 to /etc/sane.d/dll.conf, see this guide)
- brsaneconfig2 -q worked but scanimage -L showed “no sane device found”
- Brother FAQ tells you to copy libs from /usr/lib64/sane to /usr/lib/sane but sane is looking in /usr/lib/x86_64-linux-gnu/sane
- Finally scanimage -L shows device `brother2:net1;dev0′ is a Brother MFC-7820N SCANNER
- Hint: for debugging of scanimage, use SANE_DEBUG_DLL=3 scanimage -L