Please send me a complete logfile from a sane scan. Then I'll compare it with the Windows scan.
You can send the logfile directly to my email address. Cheers, Rolf Am 18.01.2013 00:08, schrieb Dan Duvall: > I went ahead and used UsbSnoop to get a capture. > > http://www.mutual.io/tmp/UsbSnoop.log > > On Jan 17, 2013, at 12:25 PM, Dan Duvall <dan_duvall at lettersandlight.org > <mailto:dan_duvall at lettersandlight.org>> wrote: > >> Sorry, which program? >> >> On Jan 17, 2013, at 12:19 PM, Rolf Bensch <rolf at bensch-online.de >> <mailto:rolf at bensch-online.de>> wrote: >> >>> Hi Dan, >>> >>> It could be helpful if you sniff the usb protocols on a Windows machine. >>> Then I can compare them with Sane and patch it. Please use this program: >>> http://www.sane-project.org/README.linux and scan a small area of >>> approx. 5mm x 5mm @ 75 dpi to reduce the logfile size. >>> >>> Cheers, >>> Rolf >>> >>> >>> Am 17.01.2013 21:10, schrieb Dan Duvall: >>>> (Sorry, sent again. Forgot to CC the list.) >>>> >>>> I'm still seeing the same behavior after recompiling without pthread >>>> support (through, looking at `configure --help`, it says this is the >>>> default under OSes other than OS X). >>>> >>>> One other thing that I forgot to mention is that this >>>> first-scan-works-second-scan-hangs behavior is following a power >>>> cycle of the scanner. Also, if I power off the scanner while it's >>>> timing out on the second scan?which is what people in the office >>>> tend to do?it sends scanimage into an infinite loop. I've frequently >>>> seen several saned processes spiking the CPU on this server which I >>>> attribute to this. >>>> >>>> Could an strace or gdb session help diagnose the problem? I'm >>>> willing to really dig in given the right direction. >>>> >>>> Thanks for the help! >>>> Dan >>>> >>>> On Jan 17, 2013, at 7:33 AM, Rolf Bensch <rolf at bensch-online.de >>>> <mailto:rolf at bensch-online.de>> wrote: >>>> >>>>> Hi Dan, >>>>> >>>>> Maybe enabled pthread support is the problem, especially for linux. >>>>> >>>>> I would upgrade sane on your lenny system to 1.0.24 with pthread >>>>> support >>>>> disabled. >>>>> >>>>> Cheers, >>>>> Rolf >>>>> >>>>> >>>>> >>>>> Am 17.01.2013 14:32, schrieb Rolf Bensch: >>>>>> >>>>>> >>>>>> Am 16.01.2013 23:35, schrieb Dan Duvall: >>>>>>> Hey there, >>>>>>> >>>>>>> I'm having trouble scanning using the pixma backend with a Canon >>>>>>> imageClass MF4150 over USB. The first scan always seem to succeed >>>>>>> while subsequent attempts timeout. >>>>>>> >>>>>>> These are the commands I'm running. >>>>>>> >>>>>>> SANE_DEBUG_PIXMA%6 scanimage 2> pixma_debug-success.log >>>>>>> SANE_DEBUG_PIXMA%6 scanimage 2> pixma_debug-timeout.log >>>>>>> >>>>>>> stderr of each: >>>>>>> https://gist.github.com/4551560 >>>>>>> https://gist.github.com/4551574 >>>>>>> >>>>>>> I get this same behavior using sane-backends 1.0.22 on Debian >>>>>>> lenny, and 1.0.24 on OS X 10.8.2. >>>>>>> >>>>>>> Any suggestions on how to further debug? >>>>>>> >>>>>>> Thanks! >>>>>>> Dan >>>>>>> >> >