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I have a laptop with hybrid Intel/AMD graphics. As far as I know, the configuration is muxless. This causes not-detection of discrete graphic card. And now my problem: I don/t know how to turn the discrete card completely off. I think it is powered all the time, because of critically short battery work time(approx. 3 hours instead of windows 7-8). Tlp and adjusting the brightness do not bring expected effect. I would really appreciate any help.

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what distro of linux do you have? is it ubuntu? which version? –  NKN Aug 20 '13 at 20:49
    
I have Ubuntu 12.04. –  daburu Aug 20 '13 at 22:02
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marked as duplicate by Web-E, Eliah Kagan, Jorge Castro, guntbert, Eric Carvalho Aug 28 '13 at 0:44

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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Here is an answer: How to disable the discrete AMD graphics card in Linux

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Welcome to Ask Ubuntu! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. –  Eliah Kagan Aug 27 '13 at 12:01
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