Utilizing nouveau's fb console driver and nvidia's blob

[Noncorporeal]

I'm loooking for help to come up with a way to use nouveau's drivers for when I'm at the console, but if I need to fire up X, utilize the nvidia proprietary blob. I know it's not 'supported' but I've heard its not possible, and that doesn't make sense to me. I don't know everything there is to know about X, gentoo, nvidia's blob, or nouveau, so I conceit that I could easily be wrong. However, it seems to me that with eselect or a chroot, I should be able to accomplish what Im after.

I've read on nouveaus site that I can unload nouveau and it will switch back to vga text mode if my hardware supports it, so I see that as proof that I can remove the noveau modules. That seems like the smaller half of the battle.
The larger part I feel I'd need the most help with would be having both drivers exist on the same system. I see lib conflicts being an issue, and I'm not sure if Im right in thinking I can either a) crate a custom open-gl slot i can eselect back and forth bewteen, or b) chroot the whole xorg build, and only install the nvidia blob in the chroot.

If I'm right, which I have doubts about being, it's mesa and libdrm that need to change, and I think that can be handled by eselect opengl if I knew how to make my own slot. Would I need to create a private ebuild that somehow installed nvidia's proprietary drivers for me into it's own slot so symlinks can be handled by eselect, or can I somehow accomplish this by unpacking the blob somewhere and building it a directory structure i'd manually point symlinks too, or is this just a crazy idea that cannot work?

The only obstacle that would really make sense to me, aside from my lack of knowlege, would be anything I have to build into the kernel for nouveau to work that would prevent nvidias blob from working. Everything else seems like it should be easy to handle. just unload the nouveau module, load the nvidia one, switch mesa/drm libs, and fire up x.

Any ideas or help would be great. Even a positive 'IMPOSSIBLE" will save me from my currently none too promising scouring of the internet, but I really have a hard time believing that I can switch actively running kernels without a reboot, but cannot switch video drivers.

Thanks in advance, for either help or an explanation of what would prevent this from working.

[Gusar]

If you "heard it's possible" then go the that place you've heard it and ask. The only possibility I see is what you've already mentioned - unload nouveau and drm modules before starting X. Mesa and stuff isn't a problem, 'eselect opengl set xorg-x11' gives you nouveau, 'eselect opengl set nvidia' gives you the proprietary gl libs.

[chithanh]

It is possible to unload nouveau by unbinding it from framebuffer console. The exact commands are described in http://nouveau.freedesktop.org/wiki/KernelModeSetting

While you are on the console, mesa is not used so you don't need to switch eselect opengl.

[Noncorporeal]

Thanks for the help chithanh, I wasn't sure if any of the mesa stuff was used or not, or really what all was used by either driver. As I said, I'm a bit of a novice. Gusar, thanks to you as well, I appreciate the input. I thought I was on somewhat the right track thinking it was pretty simple, but I didn't want to try something that wouldn't work if I could just ask in a forum and get an educated answer. Notice that I heard it was _not_ possible. I didn't think going back to the people who said it wasn't would get me much farther than the first time.

[FaeLLe]