tiina@tiina-desktop:~$ sudo scanimage -L
[umax_pp_low] sync610p failed (got 0x78 expected 0x38)! (umax_pp_low.c:3733)
[umax_pp_low] sync610p failed! Scanner not present or powered off ...  (umax_pp_low.c:6363)
[umax_pp_low] initTransport610p() failed (umax_pp_low.c:6673)

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).
tiina@tiina-desktop:~$