There have been varying reports around the net about Linux support for the
Asus M2A-VM motherboard (socket AM2, AMD 690G chipset + SB600 southbridge). It took me a while to verify all this information, mostly from forum and mailing list posts, before buying the board, so I'm posting this to save time for anyone else who might consider it. I'm running Gentoo ~amd64 kernel 2.6.22-gentoo-r6.
Update: the integrated graphics (Radeon X1250) can be used with three drivers:
* The x11 'vesa' generic driver. This, of course, provides no acceleration/XV/etc., but it works fine otherwise.
* The new free 'radeonhd' driver. I've tried the current sources and it, too, works in 2D mode with no acceleration, but at least it ought to improve with time. (If you don't know, radeonhd is the new free driver for modern ATI cards being developed mostly by Novell people using the complete, free specs ATI/AMD released recently. Just made me love that company a whole lot more.) BTW, it refuses to work with the DVI link. Just connect an RGB cable to the same monitor and it'll work (displaying on DVI too), so it's only a problem if you want dualhead.
* The binary ATI driver (fglrx). Version 8.42.3 worked and provided good OpenGL acceleration, but still no XV. However, when I put the board into dual channel mode with 4 RAM modules, trying to run X with fglrx resulted in a hard lockup. I didn't try too hard to make it work again.