Can you try out the following? If you are on Feisty, update foomatic-db to the newest version and then create a print queue for your printer where you choose the Brother HL-1040 as your printer model and "hl7x0" as the driver.
If you are on an older Ubuntu version, download the following PPD http://openprinting.org/ppd-o-matic.cgi?driver=hl7x0&printer=Brother- HL-1040&show=0 and set up a queue for your printer using this PPD file. Can you print all files in duplex now? Can you print in HQ1200 resolution (2400x600 dpi)? -- unable to print duplex on Brother HL-5150D printer https://launchpad.net/bugs/21306 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
