I was looking at the mobo yesterday (and the 5000).
According to the pdf for using the cu in the bios.
configure and then initialize. Did you initialize the configured arrays?
According to the read.txt file, the drv is only for specific Linux distros, with a note to add for others.
(It also explain how to use the drv during installation of various ways (floppy - linux dd),
It does not say it will work in F8, but you could check the kernel log or lsi site for support added for lsi 3000 sever board intl, etc. It may be in the 24 kernel or F9 rawhide?)
good luck and make a note if you make any progress.