Похоже где-то рядом бегает белый пушистый зверёк. :(
В учреждении есть три сканера, и со всеми:
[root@rigkina ~]# sane-find-scanner -q
found USB scanner (vendor=0x04e8 [Samsung], product=0x3419 [SCX-4x21 Series]) at libusb:003:002
[root@rigkina ~]# scanimage -L
*** glibc has detected an error in scanimage: double free or corruption (out): 0x0805aea0 ***
^C
[root@rigkina ~]# sane-find-scanner -q
found USB scanner (vendor=0x05d8, product=0x4002, chip=GT-6801) at libusb:003:003
[root@rigkina ~]# scanimage -L
*** glibc has detected an error in scanimage: double free or corruption (out): 0x0805aea0 ***
^C
[root@rigkina ~]# sane-find-scanner -q
found USB scanner (vendor=0x04a9 [Canon], product=0x1904 [CanoScan], chip=GL843) at libusb:001:003
[root@rigkina ~]# scanimage -L
*** glibc has detected an error in scanimage: double free or corruption (out): 0x0805aea0 ***
^C
[root@rigkina ~]
sane в репозитории 5.1 точно в рабочем состоянии?