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<TITLE>sane-devel: Re: HP 5100C and SANE</TITLE>
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<META NAME="Author" CONTENT="Adam Warner (mailing_lists@consulting.net.nz)">
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<META NAME="Subject" CONTENT="Re: HP 5100C and SANE">
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<H1>Re: HP 5100C and SANE</H1>
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<!-- received="Mon Feb 26 00:39:08 2001" -->
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<!-- isoreceived="20010226083908" -->
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<!-- sent="26 Feb 2001 21:47:55 NZDT" -->
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<!-- isosent="20010226084755" -->
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<!-- name="Adam Warner" -->
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<!-- email="mailing_lists@consulting.net.nz" -->
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<!-- subject="Re: HP 5100C and SANE" -->
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<!-- inreplyto="HP 5100C and SANE" -->
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<STRONG>From:</STRONG> Adam Warner (<A HREF="mailto:mailing_lists@consulting.net.nz?Subject=Re:%20HP%205100C%20and%20SANE&In-Reply-To=<200102260839.f1Q8d6S15722@panda.mostang.com>"><EM>mailing_lists@consulting.net.nz</EM></A>)<BR>
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<STRONG>Date:</STRONG> Mon Feb 26 2001 - 00:47:55 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0223.html">Christoph Knauer: "xsane 0.72 and big color scans"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0221.html">Christoph H.: "Re: always Segmentation Fault"</A>
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<P>
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Hi Peter Kirchgessner,
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<BR>
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<P>Thank you for your reply. It helped motivate me to keep persisting. I tried all
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<BR>
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your advice and unfortunately it did not help. You may be still right about
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<BR>
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buffer overruns. My guess is that the scanner wouldn't pause for some reason
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<BR>
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when the buffer filled up, leading to the I/O errors.
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<BR>
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<P>But the remarkable fact is that the scanner is now working. I tried different
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<BR>
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kernel combinations until one worked.
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<BR>
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<P>And the even more mind-boggling fact is that a newly compiled SMP kernel works
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<BR>
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as well without CPU lockups appearing in the message log!!!
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<BR>
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<P>The success must be the result of some combination of these factors:
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<BR>
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(a) Experimental FIFO and DMA kernel support enabled for the parallel port
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<BR>
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connected to the scanner.
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<BR>
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(b) chmod 666 /dev/sg0 (had done this earlier as well).
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<BR>
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(c) judicious use of make mrproper in kernel recompiling instead of just make
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<BR>
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clean (kernel compiling bombed once with just make clean).
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<BR>
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[(d) pixie dust.
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<BR>
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(e) gamma radiation changing a few bits on my hard disk.]
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<BR>
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<P>BTW here's the new kernel messages:
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<BR>
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<P>kernel: SCSI subsystem driver Revision: 1.00
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<BR>
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kernel: Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...
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<BR>
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kernel: Winbond chip at EFER=0x3f0 key=0x87 devid=52 devrev=f4 oldid=ff
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<BR>
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kernel: Winbond chip type 83977EF / SMSC 97w35x
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<BR>
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kernel: Winbond LPT Config: cr_30=01 60,61=0378 70=07 74=03, f0=03
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<BR>
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kernel: Winbond LPT Config: active=yes, io=0x0378 irq=7, dma=3
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<BR>
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kernel: Winbond LPT Config: irqtype=pulsed low, high-Z, ECP fifo threshold=0
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<BR>
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kernel: Winbond LPT Config: Port mode=ECP and EPP-1.9
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<BR>
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kernel: SMSC Super-IO detection, now testing Ports 2F0, 370 ...
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<BR>
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kernel: 0x378: FIFO is 16 bytes
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<BR>
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kernel: 0x378: writeIntrThreshold is 16
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<BR>
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kernel: 0x378: readIntrThreshold is 16
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<BR>
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kernel: parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,COMPAT,EPP,ECP]
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<BR>
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kernel: parport0: irq 7 detected
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<BR>
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kernel: parport1: PC-style at 0x278 [PCSPP,TRISTATE,EPP]
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<BR>
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kernel: ppSCSI 0.92 (0.92) installed
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<BR>
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kernel: parport0: epst.1 already owner
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<BR>
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kernel: parport0: epst.1 tried to release parport when not owner
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<BR>
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kernel: epst.1: epst 0.92 (0.92), Shuttle EPST at 0x378 mode 2 (PS/2) dly 1
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<BR>
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nice 0 sg 16
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<BR>
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kernel: scsi0 : epst
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<BR>
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kernel: Vendor: HP Model: C5190A Rev: 3740
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<BR>
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kernel: Type: Processor ANSI SCSI revision: 02
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<BR>
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kernel: Detected scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 3
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<BR>
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<P>Linux seems a quite a bit slower in transferring the data compared to a test I
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<BR>
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did in Windows 2000. In Win2k I scanned a colour document at 150DPI in 12
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<BR>
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seconds. It worked out the be a transfer rate or 600kB/s (not bad for a
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<BR>
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parallel port).
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<BR>
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<P>I might be able to play around with the buffer size to improve the results.
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<BR>
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<P>Regards,
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<BR>
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Adam
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<BR>
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<P><P><P><PRE>
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--
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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:%20HP%205100C%20and%20SANE&In-Reply-To=<200102260839.f1Q8d6S15722@panda.mostang.com>">majordomo@mostang.com</A>
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</PRE>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Mon Feb 26 2001 - 00:41:55 PST</EM>
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