Isn't VESA graphics handled by the card itself? Or is that the motherboard?
It's the card itself, but unfortunately trying the "hard" way (dumping the video bios, finding the vesa tables location, hex editing and re-flashing) gives no significant results, having still the same, unaltered, modes after the whole procedure. Tried a few times, then gave up, then tried out of curiosity Clover, with a tutorial full of encoded strings for the search and replace, and it worked
Looks like on the new GeForce bioses they're encrypted or encoded somewhere, and the only way is the on-the-fly search and replace like Clover does with the PatchVBiosBytes option, as the guy said on his tutorial:
* For NVidia adapters series 400 or newer, the original VBIOS image is not identical to the content of the C0000-DFFFF area. It seems that in these series the resolution matrices are either compressed or encoded in the original VBIOS image. Therefore, for these newer cards, you will not see the described matrices when analyzing an original Nvidia VBIOS image, only when analyzing the C0000-DFFFF area.
I have found that certain types of cables will change the native resolution and allow more graphics resolutions and some have less. Make sense?
That's correct, probably it uses two or more different tables depending on the output interface.
This is for instance a picture I took moments ago, using the analog output (DVI-VGA adapter), more modes, and higher resolution than digital DVI (it goes up to 1600x1200, instead of the 1280x800 available in DVI)
Unfortunately I can't find my DisplayPort-DVI adapter at the moment, but I suspect it would give me the same modes I get from the DVI output.