sudo SANE_DEBUG_EPJITSU=25 scanimage --resolution=300 --mode=Color > file_300_2.pnm

file_300_2.log

jonas@sane-scanner:~$ sudo SANE_DEBUG_EPJITSU=25 scanimage --resolution=300 --mode=Color > file_300.npm
[sanei_debug] Setting debug level of epjitsu to 25.
[epjitsu] sane_init: start
[epjitsu] sane_init: epjitsu backend 1.0.28, from sane-backends 1.0.25git
[epjitsu] sane_init: finish
[epjitsu] sane_get_devices: start
[epjitsu] sane_get_devices: reading config file epjitsu.conf
[epjitsu] sane_get_devices: firmware '/usr/share/sane/epjitsu/60f_0A00.nal'
[epjitsu] sane_get_devices: looking for 'usb 0x04c5 0x10c7'
[epjitsu] sane_get_devices: firmware '/usr/share/sane/epjitsu/300_0C00.nal'
[epjitsu] sane_get_devices: looking for 'usb 0x04c5 0x1156'
[epjitsu] sane_get_devices: firmware '/usr/share/sane/epjitsu/300M_0C00.nal'
[epjitsu] sane_get_devices: looking for 'usb 0x04c5 0x117f'
[epjitsu] sane_get_devices: firmware '/usr/share/sane/epjitsu/1300_0C26.nal'
[epjitsu] sane_get_devices: looking for 'usb 0x04c5 0x11ed'
[epjitsu] sane_get_devices: firmware '/usr/share/sane/epjitsu/65f_0A01.nal'
[epjitsu] sane_get_devices: looking for 'usb 0x04c5 0x11bd'
[epjitsu] attach_one: start 'libusb:001:010'
[epjitsu] attach_one: init struct
[epjitsu] attach_one: connect fd
[epjitsu] connect_fd: start
[epjitsu] connect_fd: opening USB device
[epjitsu] connect_fd: finish
[epjitsu] load_fw: start
[epjitsu] get_stat: start
[epjitsu] do_cmd: start
[epjitsu] cmd: writing 2 bytes, timeout 10000
[epjitsu] cmd: wrote 2 bytes, retVal 0
[epjitsu] in: memset 2 bytes
[epjitsu] in: reading 2 bytes, timeout 10000
[epjitsu] in: retVal 9
[epjitsu] in: return error 'Error during device I/O'
[epjitsu] get_stat: error checking status
[epjitsu] load_fw: read firmware file /usr/share/sane/epjitsu/65f_0A01.nal ok
[epjitsu] do_cmd: start
[epjitsu] cmd: writing 2 bytes, timeout 10000
[epjitsu] cmd: wrote 2 bytes, retVal 0
[epjitsu] in: memset 1 bytes
[epjitsu] in: reading 1 bytes, timeout 10000
[epjitsu] in: retVal 0
[epjitsu] in: read 1 bytes
[epjitsu] do_cmd: finish
[epjitsu] load_fw: bad stat on cmd 1
[epjitsu] destroy: start
[epjitsu] teardown_buffers: start
[epjitsu] teardown_buffers: finish
[epjitsu] destroy: finish
[epjitsu] attach_one: firmware load failed
[epjitsu] sane_get_devices: found 0 scanner(s)
[epjitsu] sane_get_devices: finish
scanimage: no SANE devices found
[epjitsu] sane_exit: start
[epjitsu] sane_exit: finish