Re: Unable to set correct resolution for GEFORCE 9400GT in Ubuntu 9.04
The nvidia driver is unable to interpret the EDID from your monitor.
(WW) NVIDIA(GPU-0): The EDID read for display device DFP-0 is invalid: the
(WW) NVIDIA(GPU-0): checksum for EDID version 1 extension is invalid.
You have the following possibilities:
1) Get a valid EDID file for your monitor and pass it to the driver as described in Appendix B of the nvidia Readme
2) Overwrite the EDID data with manual specified values (resolutions, frequencies, dpi) and by disabling edid based modes. You find the options needed for that as well in the Appendix B of the readme.