If you're using a USB-C, Thunderbolt hub or HDMI adapter to connect your monitors to your Mac, unplug and disconnect the device and then reconnect it again. The most reliable hub to use with an external monitor connected to Macs is the Apple USB-C Digital AV Multiport adapter. 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. Ιt seems macbooks can not function properly (at least not with HP G5 docking station and not without the multiple external monitors been detected as one) with only one usb-c cable connected. I used one cable to the docking station and another one HDMI to usb-c. So it worked with 2 cables on 2 usb-c ports. Step 1: Right-click your desktop and select the Display Settings option on the resulting pop-up menu. Step 2: The Settings app opens with the Display panel loaded by default. Scroll down and click Release the keys and press the power button to turn on your Mac. Unplug the power chord and wait for 15 seconds. Then plug the cord back in. This should be able to resolve the Thunderbolt display not working. Solution #2. Update both Thunderbolt Firmware and Mac. Hi. I'm waiting for a Macbook Pro M2. Could I work with the laptop closed and two external monitors?. I've read some discussions about multiple external monitors through Displaylink, but I´ve never heard about this option. My purpose is to have one external monitor mirroring the laptop, and the second one as second display. Thanks in advance. Right-click USB Audio device and select Set as default. USB ports are not functioning on the dock. Unplug from the power, wait 10 seconds, and then reconnect. Download and install the latest USB 3.0 host controller from Dell Drivers & Downloads page. HDCP content is not able to display on the attached monitor. I faced the same issue few days back after being able to successfully close the laptop lid with my external monitor connected all the while. For me it started working back after connecting the power cord to the laptop. Without power, laptop does not seem to mirror the display to the external monitor with the lid closed. hope this helps. 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 Monday July 3, 2023 5:44 am PDT by Tim Hardwick. Apple is working on a new external monitor for Macs that also functions as a kind of smart home display while not in use, according to Bloomberg koqL5qW.