[sane-devel] Mac OS X: sane pixma (not) scanning via network

[m. allan noah]

FYI- most other backends seem to have usb timeouts on the order of 30
seconds, unless it is a command that routinely fails, in which case it
is often set quite short.

allan

On Tue, Mar 31, 2009 at 3:13 PM, Nicolas Martin
<nicolas.martin at freesurf.fr> wrote:
> Hi,
>
> Yes, We can try to change the USB timeout used in the usb read/write
> statements.
>
> It is currently set to 1s, a default standard value that probably never
> got tuned.
>
> I can change it to 10s at least for Peter to give a try.
> Will look at this and propose a test file to Peter.
>
> Nicolas
>
> Le mardi 31 mars 2009 à 20:54 +0200, Louis Lagendijk a écrit :
>> hi Peter
>> finally some good news then! This proves that the backend basically
>> works on the Mac as well. I an only suprised to see that I had to
>> increase timeouts from the 10 seconds I used after Raoul had problems on
>> his mp620.
>> It would be good to see the logfiles of the failing attempts again. I
>> would like to check if there is a similarity in the places where the
>> failures occur. It may be a case that a timeout on USB is set too short
>> as well. Nicolas, could that be possible? On bjnp a read_bulk apparently
>> took more than 10 seconds to return. If something similar happens on
>> USB, would it be possible for the backend to loose synchronization with
>> the scanner?
>>
>> Peter, can you check a normal scan without -T:
>> scanimage --resolution=300 --format=tiff> test.tiff and confirm that
>> this works ok too?
>>
>> I  will anyhow commit the changes to the pixma_bjnp.c
>>
>> best regards,
>> Louis
>>
>> On Tue, 2009-03-31 at 11:08 -0700, Peter Schoenrank wrote:
>> > > Could you please
>> > > replace the pixma_bjnp.c in the backend directory with the attached
>> > > one,
>> > > recompile  and try again over the network?
>> >
>> >
>> > Note: since my last posting, I have installed the ScanGear software. I
>> > did, after all, buy this MX850 because I need to scan and print. If
>> > this is a problem, let me know and I can remove the Canon software
>> > temporarily for testing.
>> >
>> > I saved the attached pixma_bjnp.c to
>> > ~/Desktop/scanning_from_the_command_line/sane-scm-2009-03-27/sane-
>> > backends/backend/pixma_bjnp.c
>> >
>> > then
>> >
>> > $ cd ~/Desktop/scanning_from_the_command_line/sane-scm-2009-03-27/sane-
>> > backends/
>> > $ sudo make uninstall
>> > $ make distclean
>> > $ export BACKENDS="canon pixma"
>> > $ ./configure
>> > $ make
>> > $ sudo make install
>> >
>> > Disconnected MX850 from USB; connected to Ethernet; confirmed self-
>> > assigned IP.
>> >
>> > $ export SANE_DEBUG_SANEI_USB=255
>> > $ export SANE_DEBUG_PIXMA=20
>> > $ export SANE_DEBUG=255
>> > $ scanimage -T &> scanimage-T.log
>> >
>> > That was so successful, that I tried
>> >
>> > $ scanimage --format=tiff > image.tiff 2> scanimage.log
>> >
>> > and ended up with an actual scan in image.tiff.
>> >
>> > The logs are in
>> > http://members.shaw.ca/schoenrank.ca/2009-03-27_sane_testing.6/
>> >
>> > Many thanks to you, Louis.
>> >
>> >
>> > Peter
>> > -----
>> > Peter Schoenrank
>> > mailto: peter at schoenrank.ca
>> > phone: 250-655-6753
>>
>
>
>
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