[sane-devel] scanimage: sane_start: Out of memory - Umax Astra 600S

[m. allan noah]

On 11/15/07, Mattias Ellert <mattias.ellert at tsl.uu.se> wrote:
> 15 nov 2007 kl. 22.14 skrev Mattias Ellert:
>
> > 15 nov 2007 kl. 20.57 skrev m. allan noah:
> >
> >> On Nov 14, 2007 5:19 PM, Alexander Melhuish
> >> <awm106 at ecs.soton.ac.uk> wrote:
> >>> Hello,
> >>>
> >>> I am attempting to make my scanner work. It is a Umax Astra 600S
> >>> attached via a SCSI-Firewire interface to my MacBook, which is
> >>> running
> >>> Mac OS X 10.5. I'm using the latest version of the TWAIN-SANE
> >>> packages, which includes sane-backends 1.0.18. I tested this
> >>> configuration with a demo of SilverFast, which functioned properly.
> >>>
> >>> So far, the only way to have a complete response is using the --mode
> >>> LineArt option - anything else and the scanner and/or interface
> >>> 'crash'. Even in this mode though, no image is produced.
> >>>
> >>> Using SANE_DEBUG_SANEI_SCSI=255 and SANE_DEBUG_UMAX=255, I produced
> >>> the attached log file. I have tried experimenting a little with the
> >>> buffer options for sane_umax, but I'm not convinced that the back-
> >>> end
> >>> is at fault.
> >>>
> >>> Anyone with experience of 'Out of memory' errors or sane_umax,
> >>> please
> >>> respond. Any suggestions are welcome to just get basic functionality
> >>> to start with.
> >>
> >> looks like a threading issue, and the 'eom' errors are just a side
> >> effect. I dont know anything about threading on OSX- but i bet mr
> >> ellert does. If he does not respond to this mail, you should email
> >> him
> >> directly.
> >>
> >> allan
> >
> > Could you add SANE_DEBUG_SANEI_THREAD=255 to the set of debug values?
> >
> >       Mattias
>
> Looking at the umax backend, I think the problem is line 7993 in
> umax.c that says:
>
>    if (scanner->reader_pid < 0)
>
> This line should be
>
>    if (scanner->reader_pid = -1)
>

i assume you mean '=='?

allan

> I have compiled a test package where I have applied this change, which
> is available here:
>
> http://www.ellert.se/PKGS/test/sane-backends.pkg.tar.gz
>
> Let us know if it works for you.
>
>         Mattias
>
>
>
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