I have been battling with you since I purchased you 4 years ago on a BIOSTAR MCP6P M2+ motherboard. The many dozens of hours of tweaking to keep you and ubuntu playing nicely. The iterative search for the right combination of nvidia drivers each time I changed anything. The final straw came on an innocent apt-get update/upgrade cycle when poof no X after reboot, I probably just needed to rebuild the installed driver for a new kernel, but I panicked and tried to reinstall the nvidia driver and was unable to get any of the currently available drivers to work. What did work was replacing you. good bye.