As you may recall I was kind of having a bad time with Xorg X server configuration for my really old SIS6215 graphic card.
After digging a lot of google, I was not able to get it to work correctly, and found out that it was not supported by Xorg anymore here.
I went to use another
crap old graphic card, a Cirrus, this one. I got this one to almost work, but only for a resolution of 800×600. It took me some time, and if you need I can give you the adequate Xorg.conf file. But this resolution was too small for any relevant usage.
I then got to wonder whether Xorg was really supporting old PCI graphic cards ? It turned out with more google searches that the legitimate answer to the question is NO.
So I decided to order some old AGP cards on PriceMinister (Ebay did not get me what I needed ;-)), and got them two days later.
After that, a clean install of Gutsy, aka Ubuntu 7.10, gave me a working machine, with a decent resolution (1280 wide).
The conclusion of all that ? As Clowny said “With X, if it works, it works … If not, then there is no magic !”. And I would add, that if you want to use an old PCI card… Don’t expect it to be a smooth road !!!