[sane-devel] scanimage freezes for 3 minutes with Epson Perfection V200 [epkowa]

[emmanuel.michel at wanadoo.fr]

Hello,

The setup:
Scanner EPSON Prefection V200
OS Ubuntu Server 64 bits 10.04.3

libsane 1.0.20-13ubuntu2
sane-utils 1.0.20-13ubuntu2
iscan 2.28.1-3.ltdl7
iscan-data 1.14.0-1
iscan-plugin-gt-f670 2.1.2-1

The problem:
Everytime I scan a document with scanimage I have to wait _exactly_ 3 
minutes before it returns to the command line. Below are the end of the 
debug logs from dll and epkowa:

[DLL]
2012-02-05 20:48:31 scanimage: read 26780688 bytes in total
2012-02-05 20:48:31 [dll] sane_cancel(handle=0x1088da0)
2012-02-05 20:48:31 Closing device
2012-02-05 20:48:31 [dll] sane_close(handle=0x1088da0)
2012-02-05 20:51:31 Calling sane_exit
2012-02-05 20:51:31 [dll] sane_exit: exiting
2012-02-05 20:51:31 [dll] sane_exit: calling backend `epkowa's exit function
2012-02-05 20:51:31 [dll] sane_exit: finished
2012-02-05 20:51:31 scanimage: finished

[EPKOWA]
2012-02-05 20:58:42 scanimage: read 26780688 bytes in total
2012-02-05 20:58:42 epkowa.c:5955: [epkowa]{C} sane_epkowa_cancel
2012-02-05 20:58:42 device.c:536: [epkowa]{C} dev_unlock
2012-02-05 20:58:42 Closing device
2012-02-05 20:58:42 epkowa.c:2554: [epkowa]{C} sane_epkowa_close
2012-02-05 20:58:42 device.c:242: [epkowa]{C} dev_close (fd = 0)
2012-02-05 21:01:42 Calling sane_exit
2012-02-05 21:01:42 backend.c:251: [epkowa]{C} sane_epkowa_exit ()
2012-02-05 21:01:42 dip-obj.c:152: [epkowa]{C} dip_exit (0x1fe46b0)
2012-02-05 21:01:42 cfg-obj.c:468: [epkowa]{C} cfg_has (0x1fdf630, 4)
2012-02-05 21:01:42 cfg-obj.c:468: [epkowa]{C} cfg_has (0x1fdf630, 3)
2012-02-05 21:01:42 cfg-obj.c:468: [epkowa]{C} cfg_has (0x1fdf630, 2)
2012-02-05 21:01:42 cfg-obj.c:468: [epkowa]{C} cfg_has (0x1fdf630, 1)
2012-02-05 21:01:42 cfg-obj.c:411: [epkowa]{C} cfg_exit (0x1fdf630)
2012-02-05 21:01:42 model-info.c:209: [epkowa]{C} model_info_cache_exit 
(0x1fdf$
2012-02-05 21:01:42 scanimage: finished

As you can see, I always have this 3 minutes delay just after 
sane_close. I would be glad if someone could help me to understand what 
this temporal hole is about. Thanks in advance.

Bests,

Emmanuel MICHEL