Reading around it appears that the Marvell chipset wireless cards are
more of a pain than the Broadcom ones to get working in Linux :-(
Might be as well just replacing it with a Realtek chipset one that you
can be sure is 'plug and go' ?

If you wish to pursue getting this one working the links below may
help, or may not ....

https://help.ubuntu.com/community/WifiDocs/Driver/mrv8k

ubuntuforums.org/archive/index.php/t-96059.html