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Having updated to Mojave my extended screens now show 3 monitors when I arrange, but I only have 2 attached. The 3rd shows "no monitor" but still extends my desktop to this non existent space. How do I remove it from the options. Have tried restarting.
Good evening Julieb2365,
Welcome to the Apple Support Communities!
I understand you are seeing 3 extended screens in Mojave, but you only have 2 attached. Did you have 3 monitors attached at one point? Try unplugging all of your peripheral devices and restarting your Mac to refresh it.
If the issue persists at startup, try pressing Command + F1 to switch between mirrored and extended desktop.
Also, check the Mission Control preferences in System Preferences. Toggle the "Displays have separate Spaces" setting to see if that makes a difference for you.
Use external monitors with your Mac
Take care.
Good evening Julieb2365,
Welcome to the Apple Support Communities!
I understand you are seeing 3 extended screens in Mojave, but you only have 2 attached. Did you have 3 monitors attached at one point? Try unplugging all of your peripheral devices and restarting your Mac to refresh it.
If the issue persists at startup, try pressing Command + F1 to switch between mirrored and extended desktop.
Also, check the Mission Control preferences in System Preferences. Toggle the "Displays have separate Spaces" setting to see if that makes a difference for you.
Use external monitors with your Mac
Take care.
Thanks, I tried everything. What worked was the Mission Control commands.
Hi Julieb2365,
Thanks for letting us know that adjusting the Mission Control settings resolved your issue.
Enjoy your day!
The problem is back and now nothing will sort it. I still have the phantom 3rd screen. The only thing I can do is mirror displays. Any another ideas?
Macbook Mojave - now extends to 3 monitors but I only have 2 commented
