On 30/07/2012 12:47, Aleksandr Dezhin wrote:
> On 07/29/2012 10:35 AM, stef wrote:
>> Le 29/07/2012 08:22, Aleksandr Dezhin a ?crit :
>>> On 07/28/2012 12:46 PM, Stef wrote:
>>>> On 27/07/2012 23:25, Aleksandr Dezhin wrote:
>>>>> Dear developers,
>>>>>
>>>>> I am trying to develop another web-based interface for sane. Faced
>>>>> with a problem, and do not know how to avoid it or solve it.
>>>>>
>>>>> I have Canon LiDE 210 scanner, it works fine with genesys backend.
>>>>> Locally scanimage works in all modes: color, gray, lineart.
>>>>> However, if I scan through the network using net backend, it stops
>>>>> work in lineart mode.
>>>>>
>>>>> Scanimage freezes, until I kill the process. I attached stderr of
>>>>> scanimage --mode Lineart with SANE_DEBUG_NET=9. Process freezes
>>>>> after "[net] sane_read: reading packet length", "scanimage:
>>>>> received signal 15" appears after killall scanimage.
>>>>>
>>>>> Unfortunately I can not check whose problem it is: genesys or net
>>>>> backends. Test backend does not support lineart mode.
>>>>>
>>>>> Has anyone encountered a similar problem? How can I try solve it?
>>>>>
>>>>> Thanks.
>>>> Hello,
>>>>
>>>> what would be handy to solve this issue, would be to run saned
>>>> with SANE_DEBUG_GENESYS environment varaible set to 255, and get
>>>> the debug messages. This way, I'll have the scan parameters given
>>>> to the genesys backend in order to test this here.
>>>> You may try to play with 'emulated lineart' option.
>>>> And last, what is your SANE version ? It doesn't show up in the
>>>> log file.
>>>>
>>>> Regards,
>>>> Stef
>>> SANE version is 1.0.22, device connected to 32-bit OS Thinstation
>>> 5.1 (sane build from sources), client where I strart scanimage -
>>> 64-bit Ubuntu 12.04. Results SANE_DEBUG_GENESYS I'll send - as soon
>>> as I get to the device. By the way, is there a simple way to capture
>>> stderr, if saned used together with xinetd? Today I tried the same
>>> (but both 64-bit Ubuntu) thing with a another scanner (HPLIP
>>> backend) - lineart mode works.
>>
>> Hello,
>>
>> I expect saned is exposing a bug in the genesys backend for the
>> settings you use, surely some issue with the amount of bytes to send.
>> I remember fixing such a bug for lide100/200 after 1.0.22 release,
>> but this may be another one.
> Seems I should try trunk version.
>> Test with emulated lineart disabled.
> Yes, it works with --disable-dynamic-lineart=yes
>> Using a wrapper script (redirecting stderr to file) could be enough,
>> and telling xinetd to use it instead of the current program.
> Wrapper script for some reason does not work. A feeling that saned
> ignores the environment variables. But I ran it in standalone mode :)
> Log attached.
>>
>> Regards,
>> Stef
>>
>
Hello,
I cannot reproduce your bug running directly scanimage with the
same parameters than you :
scanimage -d genesys --resolution 75 --width 213.2 --mode Lineart
2>rl.log >rl.pnm
I am now going to set up saned.
Regards,
Stef
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