# Re: Problem with scan quality using UMAX Astra 1220S

From: Rod Pike (rodneyp@utanet.at)
Date: Mon Nov 13 2000 - 15:56:50 PST

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  On Mon, Nov 06, 2000 at 09:34:12PM -0200, Rod Pike wrote:
  > On Sun, Nov 05, 2000 at 10:36:16PM +0100, Oliver Rauch wrote:
  > > Rod Pike wrote:
  > >
  > > > I get clean scans if I use Windows or another machine. I get dirty scans if I
  > > > use sane on this particular machine.
  > >
  > > Hi Rod,
  > >
  > > please can you give some more information about the machines:
  > > - Processor, Clock (Overclocked?)
  >
  > I never overclock, my life with computers is enough for me without adding to the complexity.
  >
  > > - RAM-Size
  > > - Linux kernel version
  >
  > In both computers kernel-2.2.14-5.0
  >
  > > - sg driver version if it did not come with the kernel
  >
  > Whatever sg driver came with kernel. I don't know the version.
  >
  > > - do you have ide2scsi emulation enabled?
  >
  > I have no idea about ide2scsi emulation. I'm not compiling my own kernel here
  > so it's configured however RH6.2 ships it.
  >
  > That's it for the common info between for the two machines.
  >
  > The computer that is giving problems is as follows
  > AMD-K6-2 550 ( 550 MHz )
  > 128M RAM
  >
  > The computer that is giving a cleaner scan is as follows
  > AMD-K6-2 333 ( 333 MHz )
  > 64M RAM
  >
  I throttled my 550 MHz computer back to a 333 MHz to match my other machine and
  isolated the scanner on the SCSI buss. I ensured both the scanner and the SCSI
  interface were the only terminated devices on the buss. I also scanned with
  two different cables. Still no improvement.

  Any suggestions on where I can go from here? I think I've ruled out a hardware
  problem.

  Cheers,

      --
      Rod Pike
      rodneyp @ utanet.at
      --
      Source code, list archive, and docs: http://www.mostang.com/sane/
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