HT201177: Get help with video issues on external displays connected to your Mac
Learn about Get help with video issues on external displays connected to your Mac
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Helpful answers
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Apr 29, 2014 4:01 PM in response to Pa Nhiaby Barry Hemphill,Have you made any changes (software or hardware)?
In any event, try resetting the SMC.
Barry
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Apr 29, 2014 4:32 PM in response to Barry Hemphillby Pa Nhia,Barry,
How do I reset the SMC and what is SMC? I haven't made any changes to the software or hardware lately. Was working fine last night and all of sudden, it is not working today.
Thanks,
Pa
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May 1, 2014 6:02 PM in response to Pa Nhiaby Barry Hemphill,SMC=system management controller.
Put reset SMC into the search box.
Barry
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