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> wrote: > Sorry, which program? > > On Jan 17, 2013, at 12:19 PM, Rolf Bensch <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> 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 >>>>>> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20130117/3017ffaa/attachment.html>
