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I just downloaded the developer driver from Nvidia's CUDA Zone. Executed it and typed in restart gdm and the it worked. However after rebooting X didn't come up (xorg log), to fix it I can simply rerun the installer and the restart gdm again.

What I don't understand is where it breaks and why X11 doesn't find the module?! I removed all (I think..) of the Nvidia packages which can with Ubuntu 10.10. I've also googled a bit and found some HOWTOs about manually installing the Nvidia driver. However all of them were for an earlier version of Ubuntu.

Please do not respond telling me I should use the proprietary Nvidia driver supplied by Ubuntu, because I need the development drivers.

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According to the log, the XServer is trying to load the module nvidia which you most likely removed. Maybe you can fix this by using a static xorg.conf, if the dev-driver-module has a different name. – Bobby Feb 15 '11 at 22:03
up vote 1 down vote accepted

I've written about it on the Ubuntu Forums: HOWTO: install or uninstall nVidia drivers.

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – Eliah Kagan Sep 8 '12 at 20:51

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