I haven't tried it yet as I've yet to install the Linux release, but I believe that WeiDU and the Widescreen mod will work.

http://forums.gibberlings3.net/index.php?s=6f0ee27d993c520f653f38bd67bc8aad&app=downloads&showfile=869

http://gibberlings3.net/readmes/readme-widescreen.html

[url=http://www.weidu.org/~thebigg]http://www.weidu.org/~thebigg[/url]/