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external monitors not being recognized

  1. R

    Another USB-C external monitor post--sorry!

    I have searched and can't find a definitive answer to this (maybe there isn't one?). I have a 2020 MacBook Pro with four Thunderbolt 3 ports. I bought an external monitor that has both HDMI and USB-C ports. If I use HDMI (with a USB-C to HDMI dongle and regular USB-C cable) it works fine, so the...
  2. Jshie123

    External Monitor's won’t turn on

    Just upgraded to Monterey on my 13” M1 MacBook Pro and now my external monitor will not work. However if I go to preferences it does see the monitor. This is going to be hard using a 13” monitor for editing pictures.
  3. fpb

    11.6 and external monitors with lid closed

    Hi After upgrading to Big Sur 11.6 yesterday, I'm no longer able to close my MacBook Pro Lid and wake the external monitor connected via USB-C to HDMI. It was working just before the upgrade on 11.5.x and I've satisfied the requirements (connected to power and external keyboard and mouse)...
  4. J

    Another External Monitor Issue

    I have not been abler to get my external monitor to work after upgrading yesterday. I've spent way too long with Apple's chat and trying various things such as setting up a new account, safe booting, reloading the operating system and have come away that they really don't know how to fix it...