![]() ![]() ![]() To use closed-display mode with your Mac notebook, here's what you need: That said, I believe these are the requirements ( Search for "closed lid" requirements): However, the link you provided in a previous post no longer leads to the original page (HT201834) - and the page that it redirects to does not include information about clamshell requirements. The dock provides connection to my keyboard, mouse, external drives, USB camera, microphone, speaker, Ethernet and two Philips 246E monitors.Ģ) As to the supply of power, you are correct that the dock is not supplying power. The MacBook Pro is connected to external power in addition to the dock. but to your points:ġ) I have a MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports) with an Intel processor and I'm using the Kensington USB 3.0 Dual Display Docking Station for Windows, Mac OS, Surface Pro & Surface Laptop (K33972US). Thanks, and my apologies for the delayed response. Closed-display mode is supported on Apple M1-based Macs as long as there is a power source connected.ĭisplayLink has more information here -> The details matter in this specific case, because at this time closed-display mode (clamshell mode) is not supported on Intel-based Macs when only a 'pure' DisplayLink-based device is connected to the host. That docking station does NOT provide power to the host laptop, which is a key element of the requirements Apple provides for closed-display mode to work.įurther to this, you do not mention if the Apple Mac laptop you are using has an Intel processor or Apple M1 processor. Presuming for the moment that this is the dock you are using -> You do not provide much detail about your specific setup, however on the surface there are differences as compared to the other post which references the CalDigit dock. Katarzyna, is there a work-around for this, other than leaving the lid of my MacBook Pro open? I had clamshell mode working before moving to DL Manager 1.2. So if you’re getting a flickering image when connecting your Mac to a TV, that could be the reason.Unfortunately, there's nothing there that would exclude the Kensington USB3.0 2X Video Dock with DL Manager 1.2.0 from working in clamshell mode. Few PC monitors have this feature, but it’s common on TVs. However, you should also check to see if Black Frame Insertion is enabled. Turning off variable refresh rate features on the monitor is one we’ve mentioned before. Your monitor settings themselves may be causing flicker and this doesn’t have to be Mac-specific. The main fix here seems to be forcing a “reboot” of the dongle. We’ve also found that if you’re using your power adapter via the adapter, simply unplugging the power adapter from the dongle and reinserting it, or using the power on an alternative Thunderbolt port seems to clear up image issues. Then plug the adapter in first, then attach the monitor. So unplug the adapter from the Mac, and then the monitor from the adapter. Most important seems to be power-cycling the adapter. We’ve seen some strange flicker and “crawling” screen pixels when using an external monitor with a Mac, and one reliable fix is to plug the various components in using a specific sequence. RELATED: Everything You Need to Run Multiple Monitors from Your M1 MacBook Try Different Plug-in Sequences You can try borrowing a different adapter to see if this resolved the issue or check with the manufacturer to see if there’s a firmware update or other fix available for known issues. This works fine in general, but if you’re experiencing screen flicker, it might be down to problems with your HDMI or DisplayPort dongle. Most modern Macs have a paucity of ports, relying on a handful of Thunderbolt ports and adapters to connect peripherals. The only permanent solution was to move from DisplayPort to HDMI, which doesn’t support the feature or to disable variable refresh rate on the monitor itself. ![]() We have been unable to find a way to permanently disable variable refresh rate in macOS and it defaults to this setting each time. Now your image should be perfectly stable, at least until you reboot or unplug and then reinsert the monitor cable. ![]()
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