Have a #samsung #laptop with #AMD A6-3420M quad-core and radeon #HD 6520G dual GPU.  I've got #Kubuntu 12.04 running quite nicely with proprietary (12.4) drivers.. Problem is, this switch between discrete/integrated seems to make no difference,  and glxgears is mediocre at best.  Any idea what I'm (obviously!!) doing wrong?
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