# Re: Epson Perfection 1200 Photo USB crashes

From: Karl Heinz Kremer (khk@khk.net)
Date: Wed Dec 27 2000 - 16:43:56 PST

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  Per,

  the problem is very likely caused by a USB timeout. The USB
  scanner driver does not wait long enough for data - or the
  EPSON scanners are a little to slow to send the first byte
  of data after a "Start scan" command.

  You can fix this yourself if you are willing to recompile your
  kernel: Edit the file linux/driver/usb/scanner.h and look for
  a line that starts with

  #define RD_NAK_TIMEOUT (10*HZ)

  Change the 10 to 20 and everything should work.

  You can find this information also on my FAQ page at
  http://www.freecolormangement.com/sane/faq.html

  Karl Heinz

  On Thu, Dec 28, 2000 at 12:21:06AM +0100, Per Aalrust wrote:
  > Hi everybody,
  >
  > I have been working for a while with sane 1.0.3 (epson backend V0.1.35)
  > and the above named scanner. If scanning full size in color mode the
  > scanner
  > and/or the usb-port sometimes crashes?! On the command line I get the
  > message
  > "[epson] error in receive - status = 5" (sometimes 9 instead of 5).
  > After that error I have to do a reset, because there is no way to do any
  > further scanning. Linux is still alive, but the scanner and sane hangs.
  > Scanning in gray and binary mode works fine so far.
  >
  > Anybody out here who has a good idea that helps?
  >
  > Best regards
  > Per
  >
  > --
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