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There is such a function. AMD/ATI calls it PowerPlay.
And Nvidia calls theirs PowerMizer. It is still inherently very difficult to design an manufacture something that can scale down really low while powering up very high. For example look at what ARM did with their new processor release. Even though they have been working on power and performance for years they they too use two different cores rather than managing to get one to cover the necessary range. Graph at the bottom of http://arstechnica.com/gadgets/news/...uperphones.ars
It's funny that Michael never reports the company I work for in Ubuntu articles :-), but other work I do gets mentioned as Red Hat does something, when really Red Hat is in no way "doing" it. It just happens to be a project I want to do and RH makes sure I can do.
Perhaps RH should offer a free-form survey for users to bitch about graphics on Linux.
I don't want/need the Geforce graphics. what happens when I run linux in an optimus enabled laptop?
Does the normal intel graphics driver work?
Is there any way of disabling the nvidia GPU, or is it disabled by default?
I think Bumblebee-project (not just Bumblebee) is more madured than Ironhide, at least it has a comunity behind it and is not maintaned just by one person.
I'm now running a optimus laptop with bumblebee installed, and it works.
@grigi: default the Intel is used and the nvidia driver (or nouveau) is not loaded. But the card still uses energy and you need to turn it off manually or with an application with the right acpi calls.