From mikea@norfolk.nf

S3 Virge is an old, PCI based chipset (86C375) with 2meg memory expandable to 4 meg. It was a very popular
cheap card in it's day and lies around in many Linux installs.

I have only ever been able to get this card to work under 3.3.5 as follows

XF86Setup

Select CARD->Detailed setup

Select SVGA, NOT S3V

Select 2 or 4 meg NOT autoprobe

Choose your monitor as 1024x768 at 60Hz

Choose your config as 1024x768 16bpp

The only other config I know to work is standard 640 x 480 8bpp