Hi all.  I have a Radeon FireMV 2400.  I'm attempting to upgrade from Fedora 13
(kernel 2.6.33) to Fedora 20.  More recent kernels have not worked for me; I
recently discovered that if I use the nomodeset option, then I can book, but
xorg no longer functions.  Since it seems that using the nomodeset option is no
longer going to be supported, I need to make this work without the nomodeset
option.  Unfortunately, the computer hangs (no ping via network) during boot. 
I tried to give it the netconsole option, but this did not seem to produce any
results.  What else can I try to help resolve this problem?  

Thanks,