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" >
