[sane-devel] High res problem with Epson 1240U USBScanner

Sun Aug 12 10:19:15 BST 2001

Sorry but I do not know anyone near me who uses USB on Linux.

But I am almost convinced it is a USB related problem, as I pointed out
in my last posting to Bill Slade. There have been other reports of a
behaviour quite similar to what I experienced on the USB mailing lists
so maybe I should put up the problem there.

Thanks for your help

	Stephan

-- 

Karl Heinz Kremer wrote:
> 
> Do you have access to a different machine (different motherboard or
> at least different USB adapter) or a USB adapter card that you could
> try? I've seen similar problems go away with a different adapter.
> 
> Karl Heinz
> 
> On Tue, Aug 07, 2001 at 12:00:56AM +0200, Stephan Feder wrote:
> > Thanks for your suggestion, but I think scanner.c 0.4.5 (included in
> > kernel 2.4.7) is up to date. Which version of scanner.c do you refer to?
> > Did I overlook a new version on David Nelson's web site?
> >
> >       Stephan
> >
> > --
> >
> > Bill Slade wrote:
> > >
> > > Dear Stephan,
> > > Updating scanner.o to the latest version on the Sane site fixed the problem for me.....
> > > Now it works like a charm!
> > > Cheers,
> > > Bill
> > >
> > > >>> sf at stephan-feder.de 08/05/01 23:11 PM >>>
> > > Dear Karl Heinz,
> > >
> > > I had exactly the same problems as Bill. I now have a working
> > > 2.4.7-kernel which includes scanner.c 0.4.5. But every time while
> > > scanning I get USB timeout messages from usb.c. I tried usb-uhci.o as
> > > well as uhci.o for the Intel 82371SB USB controller in may Asus P55T2P4
> > > mainboard. I cannot pinpoint the troublemaker: sane-epson, scanner.o,
> > > usbcore.o, usb-uhci.o/uhci.o. Has anyone any idea?
> > >
> > > Just as an aside: The setup works with another well-known operating
> > > system, so it is no hardware issue.
> > >
> > > Thanks in advance
> > >
> > >         Stephan
> > >
> > > --
> > >
> > > Karl Heinz Kremer wrote:
> > > >
> > > > Bill,
> > > >
> > > > please read the FAQ for the EPSON backend on my site:
> > > > http://www.freecolormanagement.com/sane/faq.html
> > > >
> > > > You have to increase a timeout value in the kernel scanner driver -
> > > > or use a newer kernel that automatically increases this timeout for
> > > > EPSON scanners.
> > > >
> > > > Karl Heinz
> > > >
> > > > Bill Slade <bill.slade at rmit.edu.au> said:
> > > >
> > > > > Hi all,
> > > > > Perhaps someone can help me fix this problem.   I have an Epson 1240 U
> > > > Scanner.  After doing all the configuration mentioned in the USB scanner FAQ
> > > > and conecting the scanner to the USB port...I was all excited when it worked
> > > > straight away....until  I tried to scan at a resolution higher than 600dpi.
> > > > Xsane choked and a  dialog window "Error during read: Invalid argument"
> > > > popped up.
> > > > >
> > > > > Doing a <<cat /proc/bus/usb/devices >> yields
> > > > >
> > > > > :  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 2
> > > > > B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
> > > > > D:  Ver= 100 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
> > > > > P:  Vendor=0000 ProdID=0000 Rev= 0.00
> > > > > S:  Product=USB UHCI Root Hub
> > > > > S:  SerialNumber=3400
> > > > > C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
> > > > > I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
> > > > > E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=255ms
> > > > > T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  6 Spd=12  MxCh= 0
> > > > > D:  Ver= 1.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS=64 #Cfgs=  1
> > > > > P:  Vendor=04b8 ProdID=010b Rev= 1.14
> > > > > S:  Manufacturer=?????
> > > > > S:  Product=??????????????
> > > > > C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  2mA
> > > > > I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=usbscanner
> > > > > E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=  0ms
> > > > > E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=  0ms
> > > > >
> > > > > The kernel complains withthe maintainer.
> > > > > Jul 23 12:43:38 localhost kernel: scanner.c: read_scanner(0): funky result:-
> > > > 32.
> > > > > Please notify the maintainer.
> > > > > Jul 23 12:43:38 localhost last message repeated 50 times
> > > > > Jul 23 12:43:38 localhost kernel: sd_scanner(0): funky result:-32. Please
> > > > notify the maintainer.
> > > > > Jul 23 12:43:38 localhost kernel: scanner.c: read_scanner(0): funky result:-
> > > > 32.
> > > > > Please notify the maintainer.
> > > > > Jul 23 12:43:38 localhost last message repeated 1168 times
> > > > >
> > > > > What is happening and what fixes it?  Isit the backend or the USB driver
> > > > that is the problem?  Any help would be greatly appreciated.
> > > > >
> > > > > BTW -  I am using RedHat 7.1 on a Compaq laptop with kernel 2.4.2-2. The
> > > > scanner.o module  is dated April 9, 2001.
> > > > >
> > > > > Cheers,
> > > > > Bill
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > Sane-devel mailing list
> > > > > Sane-devel at www.mostang.com
> > > > > http://www.mostang.com/mailman/listinfo/sane-devel
> > > > >
> > > >
> > > > --
> > _______________________________________________
> > Sane-devel mailing list
> > Sane-devel at www.mostang.com
> > http://www.mostang.com/mailman/listinfo/sane-devel
> 
> --
> Karl Heinz Kremer                                  khk at khk.net
> PGP Key at http://www.freecolormanagement.com/download/khk.asc
> EPSON Sane Backend:         http://www.freecolormanagement.com
> 
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