Calibration problem on UMAX Astra 1220S

Dean Martin Townsley (townsley@physics.ucsb.edu)
Tue, 23 Mar 1999 00:21:03 -0800

Hi all,
My problem with the calibration is simple: I can't get it to perform the
calibration. I'm using sane 1.00 with the build-1 patch for the umax drivers
and xsane 0.18 for the frontend (tried xscanimage too).
I stuck a debug message in the code to supplement the messages already
there and found that dev->do_calibration was zero when the scan process went
through the do_calibration() function even when the box for "Quality
Calibration" was checked in the interface. The code checks and to me seems
to only perform the calibration if this is nonzero. I don't know if this is
a problem in the driver itself or somewhere else but both xsane and
xscanimage exhibit the same problem. That's as far as I got, I have final
exams for the next two days (take homes) so I won't be able to fiddle again
until after that probably, but I figured I'd say something so someone with
better knowledge of the code can maybe investigate.

oh, btw, /proc/scsi/scsi says
Host: scsi0 Channel: 00 Id: 05 Lun: 00
Vendor: UMAX Model: Astra 1220S Rev: V1.1
Type: Scanner ANSI SCSI revision: 02

Which I presume means it's firmware 1.1, (out of a possible 1.5, ugh).

Thanks,
-Dean Townsley

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