I just did a few successful scans! The patch does indeed make the scanner work, with two caveats:
1) Only every other call to scanimage results in a successful scan, the 2nd, 4th, 6th, etc scan fails the same way as before. 2) Even during successful scans the debug output contains an 'Error during device I/O', although I'm not sure if this is even a problem. Debug output from a successful scan (1st, 3rd, 5th, ... call to scanimage): https://gist.github.com/jonemo/489414e8bc5590998890 Debug output from an unsuccessful scan (2nd, 4th, 6th, ... call to scanimage): https://gist.github.com/jonemo/8a4cf7d13a50556b3c41 I also tried scanning at 600dpi and it worked successfully (every other time). -Jonas ---- On Mon, 16 Mar 2015 05:26:04 -0700 m. allan noah<kitno...@gmail.com> wrote ---- > I have attached a minor patch to the backend. The idea is to send > commands in the same order as the windows driver, starting with get > hardware status. If this does not fix it, I will move on to set > window, which looks like it should be after the initial coarse > calibration payload. > > allan > > On Mon, Mar 16, 2015 at 7:34 AM, m. allan noah <kitno...@gmail.com> wrote: > > Hmm- the scanner is upset that we tried to send window data. Perhaps > > it wants some other command to be sent first. I will look at your pcap > > again and come up with a patch > > > > allan > > > > -- > > "well, I stand up next to a mountain- and I chop it down with the edge > > of my hand" > > -- > "well, I stand up next to a mountain- and I chop it down with the edge > of my hand" > -- sane-devel mailing list: sane-devel@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-requ...@lists.alioth.debian.org