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I have two GPU's in my laptop, both of which are AMD.

Whenever I use the Catalyst Control Centre to change the GPU, nothing changes after reboot. In fact, when I do the fglrxinfo command the terminal only reports seeing one GPU, the integrated one (HD 4250).

The dedicated one (Mobility HD5470) goes unnoticed and I can't seem to use that GPU at all. I really don't want to use the Open Source drivers because I've found there generally slower than the proprietary, but the proprietary doesn't seem to work either.

Any help is appreciated.

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I've got a laptop with these two too. Even in windows I had to use vendor-specific driver for them to work. Installing catalyst from amd always breaks it. So far I haven't found a solution for this. – ipip Jun 4 at 22:53

This might help eventhough it's for AMD/Intel. Also this has a lot of information in installing switchable graphics. Hope it helps.

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By the way, I'm running AMD/Intel hybrid graphics and when i run fglrxinfo I only see the AMD too nevertheless I can see both on the Catalyst Control Center so that might not be an error. – Este Sep 14 '12 at 1:23

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