Hello. My printer is Epson LQ-300. Being unfamiliar with a lot of western people, this printer is one of the very widely used dot-matrix printer in China. This device is supported by Linux with omni driver, in ghostscript-omni package (which I installed). The problem is now I cannot find this printer appear in printer list (gnome-control-center -> add printer -> choose Epson -> no "LQ 300" in the list). Actually, none of the printers supported by ghostscript-omni is in the list. So, where should I check? What can I do to install this printer? There are too few documents about omni driver on the Internet, besides I didn't find anyone with same experience. FYI: LQ 300 printer in omni database is in my local file: /usr/share/ghostscript/Omni/Epson LQ-300.xml P.S. I tried both LQ-24 (ghostscript) driver (being a general driver) and LQ-570+ (ghostscript) driver (being a driver with closest model number). Both driver print incorrectly.