The FX5500 works great in Linux. In Ubuntu (unless you've installed/compiled a kernel other than the one included), just put the card in, open a terminal and:
Code:
sudo -i
apt-get install nvidia-glx
nvidia-xconfig
/etc/init.d/gdm restart
and you're be on your merry way with 3D acceleration. :classic:
But I can't stress this enough:
GET AN NVIDIA CARD FOR LINUX