There is an interesting article over on HTPCnews that shows some rather worrying problems that NVIDIA seem to be having with High-Definition TV resolutions.
The bug is a very strange one - there is interference all over the screen, in the form of a large number of small rectangles. It's as if the GPU is overheating, or the memory on the video card is slightly damaged. That is not the case, though, as the problem goes away when using progressive scan resolutions.
It occurs when you are attempting to use an interlaced resolution on to your display via either VGA or VGA to component using a transcoder. When a Direct3D game or 3D accelerated GUI, such as Windows XP Media Center Edition 2005.
Thus far, the bug has not been confirmed to be present when using the DVI port(s), as there are very few High-Definition televisions with a DVI input as standard.
The author of the article
went to great lengths to confirm that it wasn't a unique problem that was exclusive to the system they were using. The reports came back stating that the problem was present with both GeForce 6 series cards and GeForce FX video cards. In fact, the bug is present in every official driver that NVIDIA have released since the launch of the GeForce 6800 Ultra back in April 2004.
There is one leaked driver that seems to fix the problem for the most part. ForceWare version 71.81 that is available to download from Guru3D's download section
, where the display corruption experienced with official drivers is a very rare occurrence.
The bug is not an easy one to spot, so kudos to HTPCnews for picking up on it.