What do you mean "YMMV depending on your motherboard chipset"?
Yesterday, I did try to install this driver on RH9, but I got followings:
Preparing... ########################################### [100%]
1:fglrx-glc22 ########################################### [100%]
*** Trying to install a precompiled kernel module.
*** WARNING ***
Tailored kernel module for fglrx not present in your system.
You must go to /lib/modules/fglrx/build_mod subdir
and execute './make.sh' to build a fully customed kernel module.
Afterwards go to /lib/modules/fglrx and run './make_install.sh'
in order to install the module into your kernel's module repository.
(see readme.txt for more details.)
As of now you can still run your XServer in 2D, but hardware acclerated
OpenGL will not work and 2D graphics will lack performance.
failed.
*** Found kernel module build environment, generating kernel module now.
ATI module generator V 2.0
==========================
probing for VMA API version...
cleaning...
patching 'highmem.h'...
skipping patch for 'drmP.h', not needed
patching 'drm_os_linux.h'...
doing script based build for kernel 2.4.x and similar
compiling 'agpgart_be.c'...
compiling 'agp3.c'...
compiling 'i7505-agp.c'...
compiling 'nvidia-agp.c'...
compiling 'firegl_public.c'...
linking of fglrx kernel module...
duplicating results into driver repository...
done.
==============================
- creating symlink
- recreating module dependency list
- trying a sample load of the kernel module
Warning: loading /lib/modules/2.4.20-8smp/kernel/drivers/char/drm/fglrx.o will taint the kernel: non-GPL license - Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY
See
http://www.tux.org/lkml/#export-tainted for information about tainted modules
/lib/modules/2.4.20-8smp/kernel/drivers/char/drm/fglrx.o: init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
You may find more information in syslog or the output from dmesg
/lib/modules/2.4.20-8smp/kernel/drivers/char/drm/fglrx.o: insmod /lib/modules/2.4.20-8smp/kernel/drivers/char/drm/fglrx.o failed
/lib/modules/2.4.20-8smp/kernel/drivers/char/drm/fglrx.o: insmod fglrx failed
failed.
Installed: qt3 (gcc 3.2) based control panel application
===
ATI display drivers successfully installed
please run 'fglrxconfig' now
===
Any idea?