Has anybody got any idea what would be needed to have a working external GPU system (eGPU) under Linux? I've just seen this post of a DIY eGPU system:
I found this mentioned which I think is also relevant:
My system has switchable graphics. Can I still do a eGPU?
Yes you can. Setup 1.x's (Video card->Hybrid Graphics.dedicated=off) allows the dedicated graphics component to be completely disabled on Series-5 or older chipsets, freeing up 32-bit resources to host the desktop eGPU. If your primary video card is a Intel 4500MHD, HD or HD3000 then can even do a x1.Opt NVIDIA setup.