Hi Pascal, I found a news group posting where someone was trying to find out the differences between those ps-files that get duplex printed and those that don't. Here's the link: http://www.linuxprinting.org/pipermail/brother-list/2005q4/001174.html Maybe this is of some use to you...
I hope it's OK that I send this as a personal mail. I didn't want to spam the bug report with information that may be worthless or unwanted... Best regards, Frank -- unable to print duplex on Brother HL-5150D printer https://launchpad.net/bugs/21306 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs