Absolutely. I just alternate between "Wide" and "4:3" and it alternates each and every time with doing nothing else at all.
In fact at 1440p when I press that button to alternate the monitor does a slight flicker in its attempts to alternate.
I have used 800x600 and it works a treat going from a "spare" box to a completely filled screen. I have also tried another 4:3 of 1600x1200 and that works fine also.
Hope that helps.
FWIW - I'm using a Asus GTX670 NVidia card with the latest drivers.
What GPU and method of connection are you using...?
I'm using an NVIDIA 9800GT at the moment over DL-DVI. Tried my laptop also over Displayport. i also get the brief flicker when running at 2560 x 1440 but changing that setting which did also suggest it was trying to do something
there's something weird going on though. it does work with some resolutions but i dont think it's controlling 4:3 aspect at all:
- 1920 x 1440 = does nothing, always fills the screen
- 1920 x 1200 (16:10) = does nothing, always fills the screen
- 1920 x 1080 (16:9) = does nothing
- 1680 x 1050 (16:10 aspect) = it does control it, either wide or with borders down the side
- 1600 x 1200 (4:3) = does nothing, always fills the screen
- 1600 x 1024 = works in that it adds borders down the sides, but not the right aspect
- 1600 x 900= even though this is 16:9, the 4:3 mode does add borders down the sides
- 1440 x 900 (16:10) = works
- 1366 x 768 = even though this is 16:9, the 4:3 mode does add borders down the sides
- 1360 x 768 (16:9) = works
- 800 x 600 = works
so it seems very random, working at some resolutions but not really maintaining a 4:3 aspect ratio like it suggests. it seems to be like it just puts black borders down the sides, always the same width, when operating at certain resolutions