The native resolution of my monitor is 1440x900.
My graphics card is in VESA mode.
When I run screenmode 1440x900 I get:
screenmode: Could not set screen mode 1440x900x32: General system error
In VESA, the video card BIOS provides a list of videomodes, and we can’t use any videomode that’s not in the list. There is no way for us to set up a custom video mode.
So, until someone writes or ports a driver for nVidia cards, there is no solution.
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Don’t we have a mechanism for trying to patch NVIDIA BIOSes?
Not on any modern boards, I think.
The VESA patching mechanism itself is generic, it could work for any card, but we need to figure out where the card stores its modelines (hopefully in a single place) and in which format, so we can inject the custom modeline.
I don’t think anyone has done that research for modern NVidia cards.
How hard would it be to find out?