Switchable graphics. Find out which one is in use?

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http://forums.fedoraforum.org – I have a separate thread open regarding battery life, but I have this other off-topic question. My laptop has an ATI and intel card and I'd like to know how I can determine which graphics card is currently in use. I can run this command: Code: cat /sys/kernel/debug/vgaswitcheroo/switch and it'll output Code: 0:IGD:+:Pwr:0000:00:02.0                                                                        &n (HowTos)