https://bugs.freedesktop.org/show_bug.cgi?id=27407

--- Comment #4 from Nicolas Kaiser nikai@nikai.net 2010-08-31 07:06:56 PDT --- (In reply to comment #3)

Where can I get this? r300g or 300g doesn't yield any search results in portage.

With x11 overlay, something like the below?

emerge eselect-mesa

eselect mesa list

Now you should see r300 classic and gallium, and be able to switch between them:

eselect mesa set r300 gallium eselect mesa set r300 classic