[Nouveau] Problem for change the resolution of the screen

[Rm Beer]

Hello, i wanted change the resolution of the screen to 320x240, but
now it seems an impossible task, even configuring the resolution
characteristics to create a new resolution, even for the resolution
created by default, in no way is it possible to configure this
resolution without the screen remaining in black as an undetected
mode.
I know that it is possible to use 320x240, my monitor can even support
it, I have had the opportunity to use it many years ago, but over time
it is like the controllers, Xlib, nouveau or wherever they have
forgotten how to use it.
I need help to re-use the resolution.