[sane-devel] Pulstek OpticBook 3800 - problems with openning device on 1.0.23+

[Nikolay Shaplov]

All my previous efforts I did with libsane 1.0.22 that comes with debian.

I've tried to do the same trick with git version and with 1.0.23 and did not 
managed to do it.

For some reason sane reports about not being able to open usb device. The more 
strange thing, it that it reports it on different stages of the initialization:

=======================
 sudo SANE_DEBUG_GENESYS=256  scanimage -d genesys:libusb:002:006 -v -v -v -v 
-v >12345


[sanei_debug] Setting debug level of genesys to 256.
[genesys] SANE Genesys backend version 1.0 build 2302 from sane-backends 
1.0.23
[genesys] SANE Genesys backend built with libusb
[genesys] sane_init: authorize != null
[genesys] sane_init: little endian machine
[genesys] probe_genesys_devices start
[genesys] attach: start: devp != NULL, may_wait = 0
[genesys] attach: trying to open device `libusb:002:006'
[genesys] attach: device `libusb:002:006' successfully opened
[genesys] attach: found PLUSTEK flatbed scanner OpticBook 3800 at 
libusb:002:006
[genesys] attach completed
[genesys] probe_genesys_devices completed
[genesys] sane_genesys_init completed
[genesys] sane_open: start (devicename = `libusb:002:006')
[genesys] sane_open: found `plustek-opticbook-3800' in devlist
[genesys] WARNING: Your scanner is not fully supported or at least 
[genesys]          had only limited testing. Please be careful and 
[genesys]          report any failure/success to 
[genesys]          sane-devel at lists.alioth.debian.org. Please provide as many
[genesys]          details as possible, e.g. the exact name of your
[genesys]          scanner and what does (not) work.
[genesys] init_options start
[genesys] init_options completed
scanimage: open of device genesys:libusb:002:006 failed: Invalid argument
Calling sane_exit
[genesys] sane_genesys_exit start
[genesys] sane_genesys_exit completed
scanimage: finished
nataraj at lenovo:/.data/home/nataraj/Projects/pulstek/tests$ 
nataraj at lenovo:/.data/home/nataraj/Projects/pulstek/tests$ sudo scanimage -L
device `v4l:/dev/video0' is a Noname Lenovo EasyCamera virtual device
device `genesys:libusb:002:007' is a PLUSTEK OpticBook 3800 flatbed scanner

==========================================
$ sudo SANE_DEBUG_GENESYS=256  scanimage -d genesys:libusb:002:006 -v -v -v -v 
-v >12345


[sanei_debug] Setting debug level of genesys to 256.
[genesys] SANE Genesys backend version 1.0 build 2302 from sane-backends 
1.0.23
[genesys] SANE Genesys backend built with libusb
[genesys] sane_init: authorize != null
[genesys] sane_init: little endian machine
[genesys] probe_genesys_devices start
[genesys] attach: start: devp != NULL, may_wait = 0
[genesys] attach: trying to open device `libusb:002:007'
[genesys] attach: device `libusb:002:007' successfully opened
[genesys] attach: found PLUSTEK flatbed scanner OpticBook 3800 at 
libusb:002:007
[genesys] attach completed
[genesys] probe_genesys_devices completed
[genesys] sane_genesys_init completed
[genesys] sane_open: start (devicename = `libusb:002:006')
[genesys] sane_open: couldn't find `libusb:002:006' in devlist, trying attach
[genesys] attach: start: devp != NULL, may_wait = 1
[genesys] attach: trying to open device `libusb:002:006'
[genesys] attach: couldn't open device `libusb:002:006': Invalid argument
scanimage: open of device genesys:libusb:002:006 failed: Invalid argument
Calling sane_exit
[genesys] sane_genesys_exit start
[genesys] sane_genesys_exit completed
scanimage: finished


Does anybody know about this issue? It does not seems for me to be chipset 
related...

Also it manages to open a device once, and then can not... I do not understand 
what is the matter. :-( 
1.0.22 from sources with two debian patch that were already applied in 1.0.23, 
works well...(at least it tries to scan)