[sane-devel] Fujitsu 5120C

[m. allan noah]

On Tue, 30 May 2006, Jim McQuillan wrote:

> I'm trying to get a Fujitsu 5120C working with SANE.
>
> I've tried version 1.0.17 of the backends, and i've also tried a fresh 
> checkout from cvs today (5/30/2006).

use the cvs checkout.

>
> The scanner is detected just fine under both versions of the backends.
>
> I'm using a SCSI interface.
>
> When I try to scan with the scanimage command, I get:
>
>   scanimage: sane_read: Invalid argument
>
> I turned on debugging with SANE_DEBUG_FUJITSU=128
> and I see in the logfile:
>
>
> [fujitsu] sane_get_parameters: finish
> [fujitsu] sane_read: start
> [fujitsu] read_from_scanner: start
> [fujitsu] read_from_scanner: ERROR side:0 want:4203144 room:528/65536 doing:0 
> done:7656
> [fujitsu] sane_read: finish
> [fujitsu] sane_close: start
> [fujitsu] do_cancel: start
>

hmm- the issue is that 'room:528' part. what front-end are you using, and 
why does it give us such a tiny buffer? we cannot request such a small 
piece from the scanner, we have to request whole scanlines. your scanning 
params must be such that a single line is larger than that?

if you read the code, you will see this, right above that error message:

/* this should never happen */

which tells you something: expect the unexpected :)

> So, is the fujitsu driver at a point, where I should expect the 5120C to 
> work?
> I'm just trying to figure out if i'm looking at a driver problem, or a 
> configuration problem on my end.
>

yes- you have excellent timing, the backend has just been nearly 
completely re-written, and the 5120 should work quite well. the problem is 
your frontend. though there are some speed issues, which are hopefully 
about to be resolved...

allan
fujitsu backend maintainer

> Thanks,
> Jim McQuillan
> jam at Ltsp.org
>
>
>

-- 
"so don't tell us it can't be done, putting down what you don't know.
money isn't our god, integrity will free our souls" - Max Cavalera