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I have a MSI FX420 with Intel HD Graphics 3000 and HD Radeon 6470M. on Windows I can switch the card, but on Ubuntu I think it only runs on Radeon and drain all the battery. is there a way to possible disable the Radeon and use only the Intel HD on Ubuntu?

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You can see these references for Hybrid graphics : Ubuntu supports hybrid graphics by means of the vga_switcheroo flag

Enabling vga_switcheroo

Further links :

Switching from integrated Nvidia to a Radeon card?

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It might be useful to consolidate the information and include the essential steps here. – Mahesh Oct 12 '12 at 13:09

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