Problem with LCD television scaling

[GraveUypo]

Hi,

I got this little problem i can seem to fix. I use a 32" LCD television as a monitor, via RGB (vga) and i'm getting a really weird problem in windows vista.

This screen has very few supported resolutions modes and among them all, the one that works/looks best using the RGB cable is 1600:900. Alright, after i installed all the drivers for my computer, that resolution showed fine. BUT my television, instead of the usual 1600x900 mode, went right to 1600x1200 mode. That makes the image really blurry, not pratical at all. So i thoght maybe the desktop resolution didn't really change to 1600x900, and i took a screenshot to check the file size. it was indeed 1600x900.

Long story short: desktop is really at 1600x900, but my TV seems to think its 1600x1200 so it switches to this mode instead, making everything blurry. Only happens on windows seven, works fine on windows xp.

I tested it with other 16:9 screen resolutions and they all got the same problem: they set my television to the 4:3 or 5:4 mode counterpart (for example, 1280x720 sets it to 1280x1024)

As for my video card, it's a nvidia geforce 8800GT.

I have absolutely NO idea how am i going to fix this, since this did not happend on windows XP. I sure hope i don't have to roll back to xp just because of this.

Can anyone lend a helping hand?

ps: unfortunately the suport for PCs via hdmi on this television sucks and the only port is being used by my xbox360, so i can't use dvi/hdmi instead of RGB.

 

[GraveUypo]

alright, i figured the cause of the problem.

seems newer nvidia drivers for windows seven have some issues with scaling. so i dropped back to forceware 182,50 and 16:9 worked (mostly).

thing is now i can't set the screen to 1600x900 anymore, and when i try to add it as a custom resolution using nvidia control panel, it fails the test.
also when i check "show resolutions not suported by this screen", 1600x900 shows up but windows fails to switch to it. that's basically the same problem i had initially with windows XP (which i fixed by installing the "Compaq p1610 color monitor" driver instead of generic pnp device).

didn't work out so well on windows 7, still can't do 1600x900 or 1920x1080

at least i got some 16:9 resolutions to work, and they're not nearly as blurry as anything i was getting before.