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<H1>Re: epson 1200photo survey + freezing on certain conditions</H1>
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<STRONG>From:</STRONG> <A HREF="mailto:jc254@newton.cam.ac.uk?Subject=Re:%20epson%201200photo%20survey%20%2B%20freezing%20on%20certain%20conditions&In-Reply-To=<200009051043.LAA25294@klein.newton.cam.ac.uk>"><EM>jc254@newton.cam.ac.uk</EM></A><BR>
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<STRONG>Date:</STRONG> Sat Sep 02 2000 - 15:46:11 PDT
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0078.html">Milan Zamazal: "Re: epson 1200photo survey + freezing on certain conditions"</A>
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[ Resent for Milan -jhnc ]
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----------------------------------------------------------------------------
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<P>I'm replying to the mailing list, because the details can be interesting
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<BR>
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for tracking my problem with Epson Perfection 1200 Photo that I describe
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<BR>
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below.
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<BR>
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<P><EM>>>>>> "JHNC" == Jonathan H N Chin <<A HREF="mailto:jc254@newton.cam.ac.uk?Subject=Re:%20epson%201200photo%20survey%20%2B%20freezing%20on%20certain%20conditions&In-Reply-To=<200009051043.LAA25294@klein.newton.cam.ac.uk>">jc254@newton.cam.ac.uk</A>> writes:
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</EM><BR>
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<P> JHNC> To anyone who is succesfully using an Epson 1200 Photo
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<BR>
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JHNC> (including the TPU) under Linux with USB on a "PC":
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<BR>
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<P>Well, the scanner mostly works, including TPU.
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<BR>
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<P> JHNC> 1) version of linux kernel 1a) any kernel patches you have
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<BR>
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JHNC> applied 1b) is it SMP?
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<BR>
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<P>2.2.17pre6 compiled from Debian 2.2 sources, USB backport
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<BR>
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usb-2.4.0-test2-pre2-for-2.2.16-v3.diff.gz, ReiserFS patch, no SMP.
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<BR>
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<P> JHNC> 2) version of SANE epson backend 3) version of SANE
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<BR>
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<P>sane 1.0.3 with the included Epson backend.
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<BR>
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<P> JHNC> 4) version of xsane, if you use it
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<BR>
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<P>0.61 with a hack not to get the list of devices but to use Epson driver
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<BR>
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directly. This is because SANE freezes on an attempt to list devices
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<BR>
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(yes, I'm going to send an xsane patch to Oliver Rauch sometimes).
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<BR>
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<P> JHNC> 5) motherboard model 5a) processor(s) model 5b) if USB is
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<BR>
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JHNC> not built-in, what additional hardware you use
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<BR>
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<P>TopGun Pentium board with AMD K6/200, general USB PCI card, UHCI.
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<BR>
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<P> JHNC> 6) any problems you had (USB or SANE related) 6a) and how
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<BR>
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JHNC> you overcame them
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<BR>
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<P>I have two problems:
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<BR>
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<P>1) The insignificant one is `scanimage --help -d epson' freezes after
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<BR>
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writing out the appropriate information, as well as `sane --list-devices'.
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<BR>
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I have to switch off/on the scanner. I overcame this by saving the
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<BR>
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help into a file for future reference, specifying the epson driver
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<BR>
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to SANE always directly and hacking xsane, the problem doesn't appear
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<BR>
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anymore. :-)
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<BR>
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<P>2) The significant one is that in most cases (but not always) scanimage,
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<BR>
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the driver and the scanner all freeze during scan at higher
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<BR>
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resolutions. I have to switch off the scanner and reboot my computer
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<BR>
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(killing scanimage doesn't help, the `scanner' module remains busy)
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<BR>
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to fix the problem. My current observations of the problem are:
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<BR>
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<P> - It never happens during 600 dpi (or lower) scans.
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<BR>
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- It happened once during 1200 dpi scan; it very often happens with
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2400 dpi.
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<BR>
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- It seems to happen only when using TPU (I tried about 5 scans with
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<BR>
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flatbed and it never happened).
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<BR>
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- It seems to happen only when gamma correction is used
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<BR>
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(--gamma-red-table etc.) but I'm not sure about this.
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<BR>
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- If TPU is used and resolution is 2400 dpi and gamma correction is
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<BR>
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specified, then:
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<BR>
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* If it is the very first scan after switching on the scanner, it's
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<BR>
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very likely to succeed. It has frozen only once, when I had
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<BR>
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switched off the TPU, but specified it as a source (it switched
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<BR>
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on automatically and the scan has frozen).
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* Otherwise it always freezes.
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<BR>
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- It always freezes at the beginning of the scan, without outputting
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<BR>
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any image data.
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<BR>
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<P> Note these observations aren't based on large amount of statistical data.
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<BR>
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<P> The following information from drivers is available:
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<BR>
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<P> - SANE report with SANE_DEBUG_EPSON=1:
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<BR>
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<P> [epson] error in receive - status = 5
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<BR>
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scanimage: sane_read: Invalid argument
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<BR>
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[epson] error in receive - status = 5
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<BR>
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[epson] error in receive - status = 5
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<BR>
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... <many times repeating>
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<BR>
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<P> - Kernel log:
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<BR>
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<P> Sep 3 00:02:42 blackbird kernel: usb_control/bulk_msg: timeout
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<BR>
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Sep 3 00:02:52 blackbird kernel: usb-uhci.c: interrupt, status 3, frame# 804
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<BR>
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Sep 3 00:02:52 blackbird kernel: scanner.c: read_scanner(0): funky result:-32. Please notify the maintainer.
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<BR>
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Sep 3 00:02:52 blackbird kernel: scanner.c: read_scanner(0): funky result:-32. Please notify the maintainer.
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<BR>
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<P> - On the very first scan after switching on the TPU (and using it)
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<BR>
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SANE reports:
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<BR>
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<P> [epson] fatal error - Status = 92
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<BR>
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[epson] retrying ESC G - 1
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<BR>
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[epson] fatal error - Status = 92
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<BR>
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[epson] retrying ESC G - 2
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<BR>
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[epson] fatal error - Status = 92
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<BR>
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[epson] retrying ESC G - 3
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<BR>
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[epson] fatal error - Status = 92
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<BR>
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[epson] retrying ESC G - 4
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<BR>
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[epson] fatal error - Status = 92
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<BR>
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[epson] retrying ESC G - 5
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<BR>
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<P> After reporting these messages the performing scan continues
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<BR>
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happily.
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<BR>
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<P> I'd appreciate any help, because the vision of rebooting before each
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<BR>
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high resolution TPU scan isn't much fine. :-(
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<BR>
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<P>Milan Zamazal
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<BR>
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<P><PRE>
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--
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"Having GNU Emacs is like having a dragon's cave of treasures."
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Robert J. Chassell
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<P>--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20epson%201200photo%20survey%20%2B%20freezing%20on%20certain%20conditions&In-Reply-To=<200009051043.LAA25294@klein.newton.cam.ac.uk>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0046.html">Kai S. Loebel: "Re: glib-gtk"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0078.html">Milan Zamazal: "Re: epson 1200photo survey + freezing on certain conditions"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue Sep 05 2000 - 03:43:26 PDT</EM>
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