# Re: Mustek MFS-6000SP and ava-1505 just scans in Black...

From: Henning Meier-Geinitz (hmg-ml@gmx.de)
Date: Thu May 25 2000 - 09:44:58 PDT

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  Hi,

  > I have Suse 6.3 with kernel 2.2.13, a mustek MFS-6000SP scanner (it's
  > labelled trust imagery 1200SP on the front, but on the back mfs-6000sp), a
  > adaptec ava-1505 scsi card and a zip drive attached to that. it's all
  > recognized well by the system (cat /proc/scsi/scsi:
  > Host: scsi0 Channel: 00 Id: 04 Lun: 00
  > Vendor: MUSTEK Model: MSF-06000SP Rev: 2.02
  > Type: Scanner ANSI SCSI revision: 01

  Looks ok. I have tested a MFS-6000SP, too, but its firmware version was 3.12.
  This one didn't have the problem mentioned below.

  > But if i want to scan a picture with color or grayscale with xsane or
  > scanimage it just gives me a black picture back. lineart works.

  Interesting. I am pretty sure that this is related to gamma correction. Have
  you tried to use the "use custom gamma table" option? Does this change
  anything? If this helps I can set the MUSTEK_FLAG_FORCE_GAMMA for this
  scanner (at least for these versions).

  I have read one report back in 1998 about similar problems with a firmware
  version 2.10. Maybe all scanners below 3.0 show this behaviour.

  The debug output doesn't show anything unusual except the firmware version,
  which I haven't seen before.

  Ciao,
  Henning

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