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This does not indicate a problem with the Mac or with the external screen you wish to use, you simply have to toggle the Option key to make the detect feature visible and then be able to run the detection as usual. Nonetheless, sometimes you have to forcibly detect an external display, which is why this feature is a little curious to hide by default.

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Macbook Pro to HDMI External Monitor Fix HACK *After Updating

Subscribe to the OSXDaily newsletter to get more of our great Apple tips, tricks, and important news delivered to your inbox! Enter your email address below:. Is there a way to make the [detect displays] button show by default? I use this quite a bit connecting to various displays for presentations. He explains the assistance he got from Mac. It worked for me. Beware, there are things that may get cleared out, for example the one I know about is clearing the wifi setup.

I needed to reconnect to my wifi and needed my password.

How to Detect Displays on a Mac with OS X El Capitan, Yosemite, Mavericks

I found that the instructions above could be more clear, so here we go:. Switch off Mac 2. Disconnect HDMI 3. Reconnect HDMI 4. You should see a screen with a picture of a hard drive and a dropdown asking for you to choose your WIFI. If you do not see this, you should start the process over 6.

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Select your router and enter your WIFI password. I was about to burn the bloody thing but did what you suggested and it worked a treat. If you use and detect an external display on your Mac it has no impact on wi-fi and vice versa.

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  4. Does this not work if you use a wireless keyboard because the detect keyboard is late in the boot cycle? Or do I still not understand either version of instructions? If I also quickly add command F1, same result. F1 after login simply beeps. My monitor sees my iMac telling me signal is received, but indicates weak signal and displays black. Reboot used to fix.

    Turning TV off and on also fixed, as did selecting another input and then back to Mac. Changing cable no effect. TV is brand new and it worked flawlessly until the last Mac security update was installed, and now once I manage to get it to work, if the computer goes to sleep, it wakes up without the second monitor. The only other symptom is that my mac randomly blanks out the main display as if power saver kicked in, and I have to touch the power button to get it back, though the second screen continues to work fine.

    Now the next day, no luck. So now you have to hold a keyboard key to make a feature visible that was always visible before? Do the software developers just want to torture us? Tell me again why Apple is superior to PCs. I do this all the time in my job but with the new Mavericks I get the menu bar across the top on the external screen.

    Is there a way to get rid of this. Yes you can hide the menu bar from the external screen as described here: This is such a good tip. Before I read this tip, I would have to restart my MacBook in order to get it to detect my external monitor. Thank you! Using the option button does display the hidden display button but nothing happens when I click it. Macbook still does not connect to Sony Bravia. Any other suggestions? Ditto, connecting to Denon receiver then to Sony projector.

    Everything worked great until I installed El Capitan. The only audio output listed is internal speakers or Airplay. Clicking Detect Display does nothing. If anyone has any hints about fixing or working around this they would be much appreciated. Using Yosemite and El Capitan right now with external screens, use this frequently.

    I followed your direction and could click Detect Displays button. Odd that the detect display is hidden. Why would Mac do this? That is the question. Steve Jobs would not approve. His point was to make things easy.

    Configuring the TV display

    This reminds me of the days of cntrl alt delete on PCs! Possibly computer scientists have finally gone off the deep end of the digital world since Jobs is not there now to slap them back into reality. This is one of the best examples. The space is still there, nothing else changed, they just removed the button. Same problem here. Now it may as well be a dead monitor. Pretty frustrated about this, I need this landscape monitor for Eclipse — coding on a Macbook Pro even if the screen is pretty big is still a bit cramped. Having the same issue.

    After making the connection

    Monitor worked fine until now, really need it for work. Any update on other ways to make this work? This is great info as I had one display which would not detect all the time but this made it work. Occasionally I can make the 2nd monitor work by unplugging cable from monitor at the mac and plugging it into the other thunderbolt port.

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    5. Otherwise, 5 to 10 minutes later, the second monitor wakes up. Talk about speedy processors…. Tried the detect displays button, but no dice. Has anyone figured this out yet? Option key will allow me to see the detect displays but nothing after that?

      Find out how to connect your MacBook to a TV

      I need this to work for my class! Everything was all easy before upgrading! Hi there Still trying to connect my second screen which was working fine up until Christmas. Have restarted, updated etc. Incredibly frustrating. Thanks for your help so far!