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

[Karl Heinz Kremer]

Do you really get the "funky result" messages? This should be fixed
in 2.4.7. 

I know of one instance where similar problems were fixed by using a 
new hub. Is you scanner connected directly to the mother board, or
via a hub? 

Karl Heinz

On Sun, Aug 05, 2001 at 03:09:54PM +0200, Stephan Feder wrote:
> 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= 1.00 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
> > >
> > 
> > --

-- 
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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