I never spoke about non official kernels. I used always sources from linux-source-2.6.15 from ubuntu dapper repository. Try to make the modules with a precompiled kernel with module-assistant. You will find that it will fail in the same way as with other kernels.
It's a packaging problem, not a problem in fglrx module code! -- Build of fglrx module fails https://launchpad.net/bugs/45563 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs