Hi gmc
The Xorg.0.log file under /var/log should contain that information. Opening the file and searching for 1920 turned this
up in mine:
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "1920x1080"
(II) NVIDIA(0): "1280x1024"
(II) NVIDIA(0): "1024x768"
(II) NVIDIA(0): "800x600"
(II) NVIDIA(0): "640x480"
The first entry on the Modes line in your xorg.conf will be the resolution xorg defaults to when it starts. When Xorg is running,
you can use Ctrl-Alt-Numpad+ and Ctrl-Alt-Numpad- to switch to the other resolutions listed on that line. When you find
one you like, make it the first entry on the Modes line.
Great! I have used this information to set up the modes I want to use (all but one). I can now cycle between three resolutions - 1024x768, 8900x600 and 640x480. It is quick and easy to switch between those three. 1024x shows me everything on the screen at once, 800x gives me a better magnification and 640x better still, but requires more mousing around to see the entire screen (sometimes I miss pop-up windows because they are completely hidden).
The only mode listed that I want to use and can't is 320x240x4. I expect it is because of the 4 bit depth. No idea how to activate it. I tried putting it in the xorg.conf file but nothing new happened when I cycled through the different modes, just the three listed above. And yes, I did restart X!
Anyway, thanks for the added info - it proved most useful. I would have spent the last years of my life trying to decipher all that log file info and maybe never would have figured that out!