On Tue, 22 Nov 2005, Steve Bangert wrote: > Ok, here's the two raw text files sent directly to the device node, > this one a repost of the non-working printer: > > 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 > > > and here's of the same two files on a _working_ printer > > de154200 2248153721 S Bi:003:02 -115 8192 < > de154200 2248155385 C Bi:003:02 0 0 > d3e62100 2248168752 S Bo:003:01 -115 9 = 31313131 31313131 0a > d3e62100 2248169374 C Bo:003:01 0 9 > > de154200 2269831979 S Bi:003:02 -115 8192 < > d3e62100 2269832840 S Bo:003:01 -115 17 = 31313131 31313131 31313131 > 31313131 0a > de154200 2269833877 C Bi:003:02 0 0 > d3e62100 2269833882 C Bo:003:01 0 17 >
Presumably the two lines of text got printed out as the second trace ended. I hate to say it, but these two traces are essentially the same. > and here's a repost of the same files through cups on a non-working > printer: > same files through cups on a working printer: These two are basically the same also, although there are some apparent differences. A data block of size 3819 in the first trace was sent in the second as three blocks of size 963, 2136, and 720. Likewise, a block of size 4347 was sent instead as two blocks of size 4096 and 251. However the way the data gets divided up into blocks shouldn't matter to the printer. These traces show that the same data is getting sent to the printer in the same way each time. So there's nothing wrong with the printing procedure itself. Whatever is going wrong must happen earlier, during the device detection and setup. Do you think you can trace that? Alan Stern ------------------------------------------------------- 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
