On Tue, 2005-11-22 at 10:49 -0500, Alan Stern wrote: > On Tue, 22 Nov 2005, Steve Bangert wrote: > > > I made two text files, one file had 8 one's in it and the other has 16 > > one's in it, i sent those files to the printer device node one after the > > other while recording a usbmon trace, the printer _didn't_ print a > > single character, and nothing was printed to the system log, here's the > > usbmon trace: > > > > ddb97300 1765765675 S Bi:003:02 -115 8192 < > > ddb97800 1765766313 S Bo:003:01 -115 9 = 31313131 31313131 0a > > ddb97300 1765767176 C Bi:003:02 0 0 > > ddb97800 1765767181 C Bo:003:01 0 9 > > > ddb97300 1787606680 S Bi:003:02 -115 8192 < > > ddb97800 1787607293 S Bo:003:01 -115 17 = 31313131 31313131 31313131 > > 31313131 0a > > ddb97300 1787608643 C Bi:003:02 0 0 > > ddb97800 1787608648 C Bo:003:01 0 17 > > > Well, that's clear enough. It shows the two status reads returning 0 > bytes and it shows the two file contents, each followed by a newline. > > There's nothing to signal the printer that it should eject a page. It's > probably waiting for the computer to send more data. > > Alan Stern
Maybe the page eject signal is a function of cups, here's a usbmon trace with those same two files sent through cups instead of directly to the device node: ddb97300 1746092587 S Bi:003:02 -115 8192 < d8c4e100 1746092870 S Ci:003:00 s a1 01 0000 0000 0001 1 < ddb97300 1746093825 C Bi:003:02 0 0 d8c4e100 1746093831 C Ci:003:00 0 1 = 18 ddb97800 1747572137 S Bo:003:01 -115 3410 = 1b401b28 52080000 52454d4f 54453150 4d020000 00534e03 00000001 1b000000 ddb97800 1747622575 C Bo:003:01 0 3410 > ddb97800 1747622645 S Bo:003:01 -115 2852 = 03fffc00 fffc003f fffffcfa 00013ff0 c200c500 0203ffc0 fb000bff c000ffc0 ddb97800 1747665567 C Bo:003:01 0 2852 > ddb97800 1748029374 S Bo:003:01 -115 3455 = fc0003ff c000000f ff003ffc ff00f0fa 000103ff fa00013f fcfe0004 3ffc000f ddb97800 1748079498 C Bo:003:01 0 3455 > ddb97800 1748079632 S Bo:003:01 -115 1519 = c0003ff0 00000300 00ffc081 00810081 0081009f 00c30001 3ff0fc00 01ffc0fc ddb97800 1748103493 C Bo:003:01 0 1519 > ddb97300 1759874400 S Bi:003:02 -115 8192 < df0f2e00 1759874447 S Ci:003:00 s a1 01 0000 0000 0001 1 < ddb97300 1759875598 C Bi:003:02 0 0 df0f2e00 1759875603 C Ci:003:00 0 1 = 18 ddb97800 1760357775 S Bo:003:01 -115 2453 = 1b401b28 52080000 52454d4f 54453150 4d020000 00534e03 00000001 1b000000 ddb97800 1760394518 C Bo:003:01 0 2453 > ddb97800 1760394626 S Bo:003:01 -115 3819 = f000003f f000003f ff003ffe ff03f000 00fffe00 000ffcff 0a00003f ff000003 ddb97800 1760451505 C Bo:003:01 0 3819 > ddb97800 1760451591 S Bo:003:01 -115 4347 = fc0003ff c000000f ff003ffc ff00f0fa 000103ff fa00013f fcfe0004 3ffc000f ddb97800 1760516490 C Bo:003:01 0 4347 > ddb97800 1760818127 S Bo:003:01 -115 1987 = c0003ff0 00000300 00ffc081 00810081 008100d5 00c30001 3ff0fc00 01ffc0fc ddb97800 1760847433 C Bo:003:01 0 1987 > Would it help if i sent a usbmon trace with a working printer to see the contrast? Steve ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today Register for a JBoss Training Course. Free Certification Exam for All Training Attendees Through End of 2005. For more info visit: http://ads.osdn.com/?ad_id=7628&alloc_id=16845&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
