My MacBook Pro has a *fun little quirk* where it detects the external monitor, arranges the windows accordingly, and neglects to actually send a signal to the monitor. Sometimes I just need to wait, sometimes I need to fiddle with menus and wires for five minutes before it’ll work properly. And it’s getting worse with time.
My monitor’s fine; I tried a different cable; it happens on USB and HDMI ports so I doubt it’s a hardware issue.
And I’m not alone 😡
M1 MacBook Air: External display not recognized after waking from sleep
Having the same issue, I found that the problem doesn’t occur on HDMI via my Mac Studio. However, any USB-C to HDMI/DisplayPort adapter that I’ve tried has issues. The Mac not sending power to the USB-C port when it wakes up quickly seems to be an issue. However, if I unplug it, then plug it…
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