[sane-devel] hp7400c won't work with latest sane ?

[René Rebe]

Hi,

Tymoteusz wrote:
> René Rebe pisze:
>> Tymoteusz wrote:
>>> Rene Rebe pisze:
>>>> Hi,
>>>>
>>>> On 04.04.2008, at 01:05, Tymoteusz wrote:
>>>>
>>>>> m. allan noah pisze:
>>>>>> On 4/3/08, Tymoteusz <tymoteusz.drozd at gmail.com> wrote:
>>>>>>
>>>>>>>> Yeah, just that X segfaulted, does not tell much.
>>>>>>>>
>>>>>>>>
>>>>>>>> However, you could test with scanimage in a xterm (or variant) 
>>>>>>>> or even
>>>>>>>> the console text terminal to check your basic image processing
>>>>>>>> functionality ...
>>>>>>>>
>>>>>>>> Yours,
>>>>>>>>
>>>>>>>> -- 
>>>>>>>>  René Rebe - ExactCODE GmbH - Europe, Germany, Berlin
>>>>>>>>  http://exactcode.de | http://t2-project.org | 
>>>>>>>> http://rene.rebe.name
>>>>>>>>
>>>>>>> Well scanimage doesn't  crashing xorg. In this moment i've 
>>>>>>> compiled old
>>>>>>> sane-backends 1.0.18
>>>>>>> and my scaner had return to previous state, it's working for now, 
>>>>>>> but i
>>>>>>> think that this situation is  not so fine. Is  there  anyway to 
>>>>>>> solve
>>>>>>> this problem ?
>>>>>>>
>>>>>> yes- get a debug log like i asked for previously....
>>>>>>
>>>>>> allan
>>>>>>
>>>>>> when i catch some more time i will try to investigate a
>>>>>>
>>>>>>> bit more this issue.
>>>>>>>
>>>>>>> Regards
>>>>>>>
>>>>>>>
>>>>>>> -- 
>>>>>>> sane-devel mailing list: sane-devel at lists.alioth.debian.org
>>>>>>> http://lists.alioth.debian.org/mailman/listinfo/sane-devel
>>>>>>> Unsubscribe: Send mail with subject "unsubscribe your_password"
>>>>>>>             to sane-devel-request at lists.alioth.debian.org
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>> oups sorry i had forgotten to add ur email adres to my previous post
>>>>> log is here http://atelier1.website.pl/N-A
>>>> It is just inf. waiting for light warmup. I just yesterday found a 
>>>> similar
>>>> problem with a newer hardware and will provide a workaround when done.
>>>>
>>>> Can you test if you can scan successfully if you let the scanner warm
>>>> it's light before you scan with the Avision SANE backend?
>>>>
>>>> Yours,
>>>>
>>> Well i have left scanner for warmup but this didn't give any difference.
>>> Regards.
>>
>> Where is the log to take a look?
>>
>> Btw. I just noticed in the source I have on the screen the 7400
>> is marked as AV_LIGHT_CHECK_BOGUS, which essentially ignores the
>> light warmup state in the code. Can you review if your backend
>> source you installed from contains this?
>>
>> Yours,
>>
> Hmm
> 
> AV_LIGHT_CHECK_BOGUS appears in:
> 
> /backend/
>    767:avision.c
>    2477:avision.c
>    107:avision.h
> 
> 
> log is here http://atelier1.website.pl/N-A
> 7400_old.log is previous log
> 7400.log is new one.
> 
> also i'm sure that something had triggered lamp warmup because after 
> 40min scanner was very hot (much warmer then after 30 scan's committed 
> with old version of avison).

So, still waiting for the light. Can you add a return SANE_STATUS_GOODM;
in the beginning of your wait_4_light() function in avision.c?

If I find some time I'll send you some workaround for testing, as
maybe the silicon would report a correct status if polled less often.

If you have free time you could also test upfront if changing the
sleep(1) that should be in your function to sleep(10) or sleep(20)
fixes light detection for your scanner.

Yours,

-- 
   René Rebe - ExactCODE GmbH - Europe, Germany, Berlin
   Geschäftsführer: Susanne Klaus, René Rebe
   Sitz: Berlin, Amtsgericht Charlottenburg HRB 105 123 B
   USt-IdNr.: DE251602478
   http://exactcode.de | http://t2-project.org | http://rene.rebe.name