А теперь вообще бред
$ scanimage -L
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).
# scanimage -L
device `v4l:/dev/video0' is a Noname AverMedia AverTV Studio 305 virtual device
это мой тв тюнер
. прерывания не при чем ( в винде все норм работает. особенно если учесть то, что тюнер pci, а не usb)
# sane-find-scanner
found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x0a01 [hp scanjet scanner], chip=GL646_HP) at libusb:004:003
но в /proc/bus/usb/ пусто!