> Surely 99.999% of graphics implementations will be one of Intel, Nvida,
> AMD/ATI and Via (I've not come across anything else for years now, and
> certainly not one which allows you to use multiple adapters).
Some of us still have Matrox cards, which were a well supported card if you liked Open Source drivers, not so long ago and thus reccomended. I don't know if the dual monitor output still works, but it'd be bad form to drop support of cards that were FOSS favoured, only five years ago.