How To Fix External Display Issues On Macs 1. BetterDisplay (Free) 2. SwitchRes X 3. RDM 4. Display Menu 5. macOS Display Settings 6. Reset External Display Settings Why External Monitors Look Blurry On M1, M2, M3 & Retina Macs On many non Apple displays with 1080p, 1440p, 4K and 5K resolutions, Macs do not scale them well. External webcam only works on a specific USB-C port Hello, I have a MacBook Air 2020 M1 and an external USB-C monitor that has a built-in webcam. Everything was working fine until about a week or so ago. My laptop stopped detecting the external monitor's webcam. I tried cold-booting hardware (inc. external monitor) to no avail. Connect your Mac with the external monitor. Go to the Apple on your top left corner. Click System Preference. Click Display. Hold Option and Click Detect Display. Hold "Option" then you will If your Mac can't detect your external display, your external display will be dark. Follow one or more of these steps to try again to detect your display. Disconnect the display from your Mac, then reconnect it. It may help to turn off the display first. Put your Mac to sleep, then wake it. 1. after booting the macbook pro, or 2. after "awakening" or entering screen lock password after the external display (connected via T3/USB-C cable) has auto-turned off (from Energy Saver settings), or 3. after connecting or powering-on the external monitor connected to the MBPro via T3/USB-C cable. Connect your iPhone to a monitor via USB-C. Chris Davies/SlashGear. The iPhone 15 is compatible with two types of external monitors: USB-C and HDMI. On displays that support USB-C DisplayPort .

mac not working with external monitor