# Re: [epson] ident failed - Epson Perfection 636U

From: Torsten Howard (torsten@inetw.net)
Date: Sat Mar 18 2000 - 12:53:26 PST

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  Hello,

  This is a short addendum. I've noticed that when the scanner green light is on and steady, the scanner carriage light is also on. When I first power on/plug in/replug in the scanner, and all is ready,

  'scanimage -d epson' returns
  [epson] error in receive - status = 62
  [epson] error in receive - status = 5
  [epson] ident failed
  scanimage: open of device epson failed: Invalid argument

  the second time I run this command, before printing anything out, the green light changed red and flashed quickly, and the scanner carriage light goes out (!).

  The programs seems to never quit, and the printer indefinitely flashing the red light. I can now control-C out of the scanimage program (normally the scanimage program doesn't respond to control-C) and power off/on the scanner.

  Torsten

  Torsten Howard wrote:
  >
  > Hello,
  >
  > Please help. My epson scanner is more stubborn than Windows' registry. I'll try to
  > list everything I've tried and done very concisely and explicitly.
  >
  > Much thanks for any help,
  > Torsten Howard
  >
  > The Scanner
  > -----------
  > Epson Perfection 636U
  > USB interface
  > Supported by SANE backend
  >
  > The Computer
  > ------------
  > Sony VAIO 505TR laptop
  > 1 USB Port
  > UHCI (not alternate)
  > Kernels used: 2.2.13, 2.2.14, 2.3.99pre1
  > Distribution: Slackware 7.0
  >
  > The Problem
  > -----------
  > When I plug the scanner in, unplug and then replug it in, power-off then power-on,
  > 'scanimage --list-devices' returns
  > [epson] error in receive - status = 62
  > [epson] error in receive - status = 5
  > [epson] ident failed
  >
  > It takes ~2 min. 0.12 sec to run this command every time I run it.
  >
  > A couple of times, it just prints first and third, the second and third, or just the
  > third lines from above.
  >
  > After trying 'scanimage --list-devices' several times, eventually just
  > [epson] ident failed
  > is printed, and after a little while longer, and I'm not 100% on the error conditions
  > here, but it seems like one error is printed, the green ready light on the scanner
  > turns red and flashes quickly.
  >
  > Hereafter, I must power off/power on the scanner. It seems this red light started
  > flashing once after the second line was printed (but no the third), and all other
  > times it seems the red light started flashing sometime after the scanimage program
  > quits, but I'm not sure. Every time I check the scanner right after the program
  > quits, it's light is green. But often I look back after not having checked the
  > scanner for awhile, and the light flashes red. Hmmmph.
  >
  > What I Know
  > -----------
  > the scanner works. I can scan with printshop pro under windows 98.
  >
  > when the "plug n' play" is enabled in bios, nothing works. When disabled, I get the
  > error mentioned above. So it remains disabled. This was done under recommendation
  > from Karl's homepage usb setup.
  >
  > /dev/usbscanner0 was created with the command 'mknod /dev/usbscanner c 180 48'
  >
  > I've tried using sane v1.0.2 and save v1.0.2 modified with the epson files (version
  > 20000306) from www.khk.net (Karl Heinz Kremer's page) - don't worry, I deleted all the
  > old files before reinstalling the new version to make sure there were no duplicate
  > files anywhere.
  >
  > I have modified the file /usr/local/etc/sane.d/epson.conf to one have one line,
  > '/dev/usbscanner0'
  >
  > the output of /var/log/debug prints, when I connect the scanner
  > ... kernel: hub.c: port 1 connection change
  > ... kernel: hub.c: portstatus 101, change 1, High Speed
  > ... kernel: hub.c: portstatus 103, change 0, High Speed
  > ... kernel: hub.c: kmalloc IF c696d2c0, numif 1
  > ... kernel: usb.c: usbscanner driver claimed interface c696d2c0
  > so I know the scanner is being recognized and initialized, and it appears the scanner
  > driver is grabbing the interface(?)
  >
  > 'scanimage -d epson' command returns
  > [epson] error in receive - status = 62
  > [epson] error in receive - status = 5
  > [epson] ident failed
  > scanimage: open of device epson failed: Invalid argument
  >
  > 'xscanimage epson' returns a dialog box, something like 'failed to open epson' and
  >
  > 'scanimage /dev/usbscanner0' returns
  > [epson] ident failed
  > scanimage: no SANE devices found
  >
  > I have used the kernel 2.2.13 patched with the usb backport (for 2.2.14) and I have
  > used the 2.2.14 kernel with the usb-backport (for 2.2.14). Both have the exact same
  > errors and outputs. I have compiled both as modules, and directly in the kernel.
  > Kernels are compiled with usbcore, usbdevfs, usbscanner, and uhci (not "alternate").
  > Also, I was sure to make modules and make modules_install because I can insmod usbcore
  > and insmod usb-uhci and insmod scanner....
  >
  > I can mount /proc/bus/usb but it never ever shows any files (devices, etc).
  >
  > I have tried the 2.3.99pre1 kernel, but it failed to boot. It printed something like,
  > 'Uncompressing kernel......... OK, booting" and hung right there. I made very few
  > configuration changed, and even set 'vga=normal' in lilo.conf (and ran lilo) to make
  > sure kernel could use the display, but it still failed to boot.
  >
  > --
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