I'm building a Linux server with a board which doesn't have onboard graphics.
This system will be headless for the most part but I will connect a monitor to it as it doesn't have IPMI.
What PCIe graphics cards are known to have good native Linux support for text mode and basic X11? It doesn't have to be a modern card but low power is optimal to keep any added heat to a minimum.
The reason for asking this question comes down to finding a product that will have good driver support.
Here is an example of what I want to avoid:
You actually got burned by AMD/ATI.
That chipset is among those whose driver has now been branched to legacy support. Unfortunately, that driver will not work with X Server 1.13, which Quantal uses.
No chipset prior to Cedar (HD 54xx) is supported by drivers that will work with X Server from here on out. That means HD 2xxx - 4xxx are unsupported by AMD/ATI in any distro using X Server 1.13 or beyond.
AMD's website specifies that the driver for your card (using their search) is version 8.982.8.3, which will work up to Ubuntu 12.04.1
Surely there is no guarantee that any particular product won't suddenly be moved to a legacy branch. But then again, the G200 by Matrox came out in 1998 and is still well supported. It's too bad that it's not available in PCIe.