[sane-devel] A couple issues with genesys HP G4010

m. allan noah kitno455 at gmail.com
Sat Jan 29 16:30:15 UTC 2011

brian- I did not write the genesys backend, but I did write the
sanei_magic library that it uses to provide the swdespeck option. It
would be interesting to see a low resolution version of the two
images, and a log with:


combined with whatever the highest debug level genesys will give
without crashing.


On Fri, Jan 28, 2011 at 8:19 AM, Brian Shaver <shakerlxxv at gmail.com> wrote:
> I'm using the Lineart mode and trying the --swdespeck option and I've
> noticed its leaving a black band along the bottom of the image.
> The 2nd issue, is that when I turn the debug up ( SANE_DEBUG_GENESYS=10 )
> and try the same scan, the process seg faults. The following is the stack
> from the core:
> (gdb) bt
> #0  0x00007fa3e4ce35c8 in sanei_genesys_write_pnm_file
> (filename=0x7fa3e4cec479 "unprocessed.pnm",
>     data=0x7fa3e2267000 <Address 0x7fa3e2267000 out of bounds>, depth=1,
> channels=1, pixels_per_line=2360, lines=3188)
>     at genesys_low.c:144
> #1  0x00007fa3e4caa60f in genesys_buffer_image (s=0x99e340) at
> genesys.c:6895
> #2  0x00007fa3e4caccab in sane_genesys_start (handle=0x99e340) at
> genesys.c:7864
> #3  0x00007fa3eae33ae2 in sane_dll_start (handle=0x99b2a0) at dll.c:1263
> #4  0x00007fa3eae20d38 in sane_start (h=0x99b2a0) at dll-s.c:48
> #5  0x0000000000406d1c in main (argc=13, argv=0x7fffe2b73a08) at
> scanimage.c:2283
>  The code is trying to write out a file ( unprocessed.pnm ) containing ... I
> think the Lineart converted data before performing the despeck process.
> I'd be happy to help with a fix for this, or provide further information or
> testing.
> Thanks,
> Brian ..
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