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

[Karl Heinz Kremer]

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@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
> 
> 
> 
> 
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