Why is my LG monitor not showing up on my Mac?
Running 10.14.6 Mojave on a MacBook Air. My LG monitor no longer appears in the display options. It remains dark even though it has power.
[Re-Titled by Moderator]
What model of monitor and what sort of connector are you using to connect it to your Mac? Are you able to test that monitor with another computer to verify that the monitor is still working?