One issue that needs to be addressed is driver support, particularly around multi-monitor setups. Nvidia apparently now has at least partial support for Optimus

One issue that needs to be addressed is driver support, particularly around multi-monitor setups. Nvidia apparently now has at least partial support for Optimus laptops as of driver 319+ (currently 325). The biggest PITA with multi-monitor Linux based systems is dealing with forced max power state (read: constant heat generation and fan noise). Optimus should allow Intel graphics chip to drive say, your laptop display and one external monitor via VGA, and then the Nvidia chip drives an external via HDMI and Display Port. On Fedora 18 so can't yet upgrade to Nvidia driver >= 319. When I initially connected 2 external monitors to my laptop, the laptop GPU fan kicked on _every single minute_ click-whirrrr, click-whirrr, click-whirrrr, total madness. Was forced to mod the VBIOS, undervolting the Nvidia chip and slightly reducing GPU fan speed, a risky though rewarding operation. Now the laptop stays quiet since the GPU is constantly in adaptive/power saving state. Hardware undervolting is obviously a no-op for gamers; hopefully with Optimus the multi-monitor heat generation situation will improve to the point where users don't have to risk bricking their graphics card in order to have a sane Linux work environment when not gaming.