I've been trying get the fglrx driver running on my custom 2.6.21(256mb FireGL card) and after all the googling and breaking my head, I'm still unable to get it going.
To begin with, I installed the driver using yum and it goes fine, but the only problem is that I cannot use my custom 2.6.21 kernel. I then cleaned this up and got the latest 8.36.5 driver from from ATI and tried two approaches both of which failed in the same place(aticonfig: munmap_chunk()).
1. Using ATI's install GUI
2. I built the RPM and try to install them.