Re: Problem with scan quality using UMAX Astra 1220S

From: Rod Pike (rodneyp@utanet.at)
Date: Thu Nov 16 2000 - 15:13:27 PST

  • Next message: Oliver Rauch: "Re: Problem with scan quality using UMAX Astra 1220S"

    On Mon, Nov 13, 2000 at 10:44:16PM +0100, Oliver Rauch wrote:
    > Rod Pike wrote:
    >
    > > > 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.
    >
    > Hi Rod,
    >
    > some ideas:
    > 1) did you change the order of the pci devices (swap the scsi controller
    > with another pci device?)

    I'm currently using an ISA interface but I got the same results from a
    SCSI interface

    >
    > 2) do you use the most recent bios for the 550MHz Mainboard?

    I'm using the most recent supported BIOS update ( 1007.A for my P5A )
    there are beta BIOS available but I prefer to stay away from them.

    >
    > 3) Is the voltage of the 550MHz CPU correct?
    > Does the mainboard list the Amd K6-2/550 as supported CPU?

    Yes and yes.

    >
    > Are you able to put the 330MHz CPU into the 550 Mhz Board?
    > (Be careful, the my work with different voltage settings)!!

    I would like to avoid doing this but I used to have the 330 MHz CPU in
    this motherboard and I believe the scanning behaved the same way.

    As I can get good scans running TWAIN, I'm doubtful that I have a
    hardware problem.

    Are there any ways of tweaking the SCSI driver properties?

    Cheers,
    Rod 

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