I'm following this tutorial in an attempt to install the drivers for my ATI Mobility Radeon HD 3400 on Fedora 11.

I am using the 2.6.29.4 kernal, and so I skipped step 1. I installed this driver from AMD's site: http://support.amd.com/us/gpudownloa...5&lang=English

Then I check the /usr/share/ati/fglrx-install.log file like the tutorial said, and found that there were a few errors. Here is the exact contents of the file, from beginning to end:

Unloading radeon module...
Unloading drm module...
[Message] Kernel Module : Trying to install a precompiled kernel module.
[Message] Kernel Module : Precompiled kernel module version mismatched.
[Error] Kernel Module : Kernel module build environment not found - please consult readme.

Does anyone know what to do from here?

P.S. I tried this before and continued on, ignoring the error, which resulted in Fedora not even being able to start up (in other words, I didn't even see the blue bars go across the bottom of the screen, it was just black).

You need the C compiler and kernel source headers to build the module. You can install this through yum, I believe its the kernel-devel package.

Is that what the second half of the first part is? ([root@fedora ~]$ yum install kernel-devel)

I tried that the first time I did this, and got the same error.

And I just tried it again, and I reinstalled the drivers, but the log file still contains the same error.

Don't know about the tutorial, but FWIW the benefit of my experience...

The best way to install a driver module is to build it from source first. Otherwise you will probably get 'kernel mismatch'. You need to install the kernel source (or at least the kernel headers). Then download the driver source code including the makefile. See http://lwn.net/Kernel/LDD3/ for instructions on the new kernel build system for 2.6.

I met with the same problem, the ati driver file I use is ati-driver-installer-10-7-x86.x86_64.run, OS is CentOS 5.5, the problem solved finally:
1.you must ensure the following things are installed:
gcc
2.run "uname -r" to get the accurate version of the kernel, like the OS of mine, the result is "2.6.18-194.el5"
3.install the accurate version of the kernel header files, which commonly be included in "kernel-devel" package, like OS of mine,it would be "kernel-header-2.6.18-194.el5.i686.rpm", the slightly newer or older versions cannot be done!(like mine, the package installed by yum online is newer -"kernel-header-2.6.18-194.11.1.el5.i686.rpm", which I replaced finally with the older one on my system installation DVD)
4.you must ensure that the directory "/lib/modules/｀uname -r｀/build" directs to the directory that contains the kernel header files, like mine, it's "/usr/src/kernels/2.6.18-194.el5-i686", if not, you should make a link to it. After that, it should be done. Good luck.

I get the same problem on my Debian Lenny with Radeon HD 4570 M and finally solved it thanks to galaxy_fish. When I tried to compile kernel module it complained about not having kernel sources despite that they have been installed. I looked in the directory /lib/modules/2.6.26-2-amd64 and found out that I had there link to /usr/src/linux-headers-2.6.26-2-amd64 named "build.save" instead of "build". So I renamed it. After that module was compiled successfully.