I would like to use again my Gigabyte 6600 GT card with 256 MB of VRAM memory (utilizes silent pipe cooling technology, no fan installed, but a big two sided copper gill) , because I have only 2 GB of system memory, which often proves low, often heavy swapping begins to the hard disk and the system becomes unresponsive for minutes. But I read somewhere that Linux can utilize a part of video RAM as a fast swap memory, so I think I can get about 180-200 MB fast swap memory by using this card again. Right now I am using an even older 128 MB NVidia GeForce FX5200 because I thought it consumes lower energy, and I didn't need 3D grahics.
My problem is when I put it in the AGP slot, and try to boot, then I can see scrambled text on the screen. Looks similar when bit planes are skewed in a BMP file. Original post messages and graphics are only barely visible, here is a gif showing the phenomenon (17 MB gif!) :

And a youtube video too: [video="https://www.youtube.com/watch?v=jP0OzPD2XKY"]https://www.youtube.com/watch?v=jP0OzPD2XKY[/video]
A slightly brigther version:
[video="https://www.youtube.com/watch?v=SC9v5tMyFKk"]https://www.youtube.com/watch?v=SC9v5tMyFKk[/video]
My problem is when I put it in the AGP slot, and try to boot, then I can see scrambled text on the screen. Looks similar when bit planes are skewed in a BMP file. Original post messages and graphics are only barely visible, here is a gif showing the phenomenon (17 MB gif!) :

And a youtube video too: [video="https://www.youtube.com/watch?v=jP0OzPD2XKY"]https://www.youtube.com/watch?v=jP0OzPD2XKY[/video]
A slightly brigther version:
[video="https://www.youtube.com/watch?v=SC9v5tMyFKk"]https://www.youtube.com/watch?v=SC9v5tMyFKk[/video]