Comment 1 for bug 60454

This morning when I installed the Kernel Upgrade for version 2.6.15-26.47-k7, I started having exactly the same problem.

There is no way the Nvidia driver will load, and you end up with a blank screen. After doing a "dmesg" appears the same as above:
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nvidia: disagrees about version of symbol boot_cpu_data
nvidia: Unknown symbol boot_cpu_data
nvidia: disagrees about version of symbol boot_cpu_data
nvidia: Unknown symbol boot_cpu_data
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I had to manually change the "/etc/X11/xorg.conf" file, in the section of the driver, from "nvidia" to "nv", to be able to start the X Server.

When I saw this bug i guessed i'm not the only one with this problem, so maybe it's not my fault for a misconfiguration.