I noticed this problem while trying to print something today. Even though the page was formatted to landscape, the printer would still print it in portrait mode.

My printer is a Brother HL-2170W using the Foomatic/hpijs-pcl5w (recommended) driver.

The fix:

In LibreOffice, go to File > Printer Settings > (select printer) > Properties > Device.

Change ‘Printer Language Type‘ from ‘PDF’ to ‘PostScript (Level from driver)’

The page now prints in the correct orientation.

Futher reading:

• problems printing landscape with libreoffice and suse 12.1
• cups landscape woes with pdf: printer truncates Landscape orientation pages to Portrait dimensions