[sane-devel] Xerox DocuMate takes long to return BUSY when on standby

[Daniel Elm]

If I recall correctly, most of the DocuMate scanners should start come out of standby if it detects paper in the input tray.  I believe the DocuMate 152 will also start to come out of standby if you hit the function select button as well.



-----Original Message-----
From: sane-devel-bounces+delm=bulletscan.com at lists.alioth.debian.org [mailto:sane-devel-bounces+delm=bulletscan.com at lists.alioth.debian.org] On Behalf Of dabicho
Sent: Tuesday, June 15, 2010 6:43 PM
To: m. allan noah
Cc: sane-devel at lists.alioth.debian.org
Subject: Re: [sane-devel] Xerox DocuMate takes long to return BUSY when on standby

Thank you.
That helps a lot.
I don't know why I missed that option. I can now turn off power saving.
However the problem will remain if the power_save_time is set to
something other than 0.

btw, the scanner comes out of it's stand by mode if I unplug and plug
back in the usb cable.

On Tue, Jun 15, 2010 at 1:32 PM, m. allan noah <kitno455 at gmail.com> wrote:
> Well, at least it is short:
>
> TUR
> 5 byte INQ
> 0x60 byte INQ
> READ page code 0x69 (NVRAM data?)
> SEND page code 0xa2 (Power Save Timer? data: 0x000f)
>
> I would guess that the last command is the trick.
>
> backend/avision.c already has a set_power_save_time(), so perhaps that
> can be used during scanner startup?
>
> allan
>
>
> On Tue, Jun 15, 2010 at 12:46 PM, dabicho <tsukebumi at gmail.com> wrote:
>> Ok.
>> This Log is from twain (twacker)
>> Here I did the twain steps form Open Twain Source Manager, Open a
>> Source (at this point, the scanner came out of its stand by state),
>> Close the Source, Unload the Source Manager.
>>
>> I also did a scan preview, but the uncompressed log file is 13M aprox.
>> and 1.3 compressed with bzip2
>>
>> On Tue, Jun 15, 2010 at 10:17 AM, m. allan noah <kitno455 at gmail.com> wrote:
>>> No problem. Can you also leave the logger running, and let the scanner
>>> go to sleep, and then start it up again?
>>>
>>> allan
>>>
>>> On Tue, Jun 15, 2010 at 11:04 AM, dabicho <tsukebumi at gmail.com> wrote:
>>>> Sorry, I did not realize I was replying to you only.
>>>> After just opening a twain app, the scanner comes out of its stand by state.
>>>> This is what I got, but I can not make much sense off it.
>>>>
>>>>
>>>> On Mon, Jun 14, 2010 at 1:20 PM, m. allan noah <kitno455 at gmail.com> wrote:
>>>>> http://www.pcausa.com/Utilities/UsbSnoop/
>>>>>
>>>>> allan
>>>>>
>>>>> On Mon, Jun 14, 2010 at 2:19 PM, dabicho <tsukebumi at gmail.com> wrote:
>>>>>> What tool can I use to get a log of that?
>>>>>> I have an XP machine in which I can test.
>>>>>>
>>>>>> On Mon, Jun 14, 2010 at 1:03 PM, m. allan noah <kitno455 at gmail.com> wrote:
>>>>>>> No- there is generally one backend per scanner chipset. The avision
>>>>>>> backend is the only one that supports this machine.
>>>>>>>
>>>>>>> You could try to get a log of the windows driver in action, and see
>>>>>>> what it does to wake up the scanner. Perhaps it is something simple
>>>>>>> that can be replicated in sane.
>>>>>>>
>>>>>>> allan
>>>>>>>
>>>>>>> On Mon, Jun 14, 2010 at 2:01 PM, dabicho <tsukebumi at gmail.com> wrote:
>>>>>>>> On Mon, Jun 14, 2010 at 12:29 PM, m. allan noah <kitno455 at gmail.com> wrote:
>>>>>>>>> yes- avision. Unfortunately, this backend is unmaintained, so I'm not
>>>>>>>>> sure who can fix it.
>>>>>>>>>
>>>>>>>>> allan
>>>>>>>>>
>>>>>>>>
>>>>>>>> Is there any way in which I can force a different backend? (I don't
>>>>>>>> know how sane works internally, meaning I don't know how it chooses a
>>>>>>>> backend over the rest) To try and find something.
>>>>>>>>
>>>>>>>> the avision backend manpage did not help either
>>>>>>>>
>>>>>>>> Thank  you
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> "The truth is an offense, but not a sin"
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> "The truth is an offense, but not a sin"
>>>>>
>>>>
>>>> --
>>>> 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
>>>>
>>>
>>>
>>>
>>> --
>>> "The truth is an offense, but not a sin"
>>>
>>
>
>
>
> --
> "The truth is an offense, but not a sin"
>

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