#66 Epson 1670 I/O Error

[Steve Butterfield]

I am running on SUN Solaris 8 / SunRay device with
libusb ( Pre-release ) The write of the firmware for
the scanner fails part way in on a usb_write ( debug
info in file fwwrite ) . If I comment out the firmware
field in snapscan.conf the xsane front end starts fine
but aquire preview results in failed to start scanner (
debug info in failed_scan )

[Steve Butterfield]

Debug output

[Oliver Schwartz]

Logged In: YES
user_id=89371

The interesting part of the log is here:

[snapscan] download_gamma_tables
[snapscan] download_gamma_tables: Sending gamma table
for 14 bpp
[snapscan] send
[snapscan] snapscan_cmd
[snapscan] snapscani_usb_cmd(0,0xd9ed0,16394,0x0,0x0 (0))
[snapscan] atomic_usb_cmd(0,0xd9ed0,16394,0x0,0x0 (0))
[snapscan] usb_cmd(0,0xd9ed0,16394,0x0,0x0 (0))
[snapscan] usb_cmd: cmdlen=10, datalen=16384
[snapscan] usb_write: writing: 0x2a 0x00 0x03 0x00 0x00
0x96 0x00 0x40 0x00 0x00
[snapscan] usb_read: reading: 0xf8 0x00 0x00 0x00 0x00
0x00 0x00 0x00
[snapscan] usb_write: writing: 0x00 0x01 0x02 0x02 0x03
0x03 0x03 0x03 0x04 0x04 ...
[snapscan] usb_write Only 2048 bytes written
[snapscan] send: snapscan_cmd command failed: Error during
device I/O
[snapscan] download_gamma_tables: send command failed:
Error during device I/O
[snapscan] sane_snapscan_start: download_gamma_tables
command failed: Error during device I/O
[snapscan] sane_snapscan_cancel

It seems that only 2048 of 16384 bytes could be sent to the
scanner. Since the same code works on Linux I assume it's
something to do with libusb. Maybe there's a limitation on the
transfer buffer size?

Can you send (oliverschwartz@users.sf.net) or attach
another log for the failed firmware upload?

-Oliver

[Nobody/Anonymous]

Logged In: NO

I am trying to install my Epson 1670 and I am having
troubles finding the firmware file. Where is it supposed to be?

I have the sane-backend version 1.0.13

Many thanks,

Jeff Silverman
jeff@commercialventvac.com

[Oliver Schwartz]

Logged In: YES
user_id=89371

The firmware file is delivered with the windows driver. It can
be foundsomewhere under your windows directory after you
installed the driver.

/Oliver

[Nobody/Anonymous]

Logged In: NO

I'm running ALT Linux Msater 2.2 (Russian version of
Mandrake). scanimage -L works fine and detects scanner at
snapscan:libusv:001:010
Firmware is also present and good. The problem appears that
when i start xsane it hangs up until i disconnect scanner
from computer or power supply.
sane-backends 1.0.14 and sane-frontends 1.0.12 packages were
build from sources.

BUT! On ASP Linux 9.2 (Russian RedHat 9.2 i think) after
compiling and installing backends (because originally it
have 1.0.12 version) all works fine.