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@UgRoss
Created May 21, 2020 09:09
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How to change refresh rate on an external display on macOS
# install homebrew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
# install cscreen
brew cask install cscreen
# list displays
cscreen -l
# find your external screen in the list and write the number (not the ID) down somewhere
# in the following instructions, use that number instead of <SCREEN>
# list display modes for your external screen
cscreen -s <SCREEN> -v
# find a display mode you like and run
cscreen -s <SCREEN> -x <HEIGHT> -y <WIDTH> -r <REFRESH_RATE>
# enjoy!
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