External display mac os catalina In macOS Catalina and macOS Big Sur, press and hold the Option key and select the Scaled button to display the refresh rate menu. Everything works fine, but I can't find a way to turn off the Retina Display on the Macbook and just keep the external monitor as the only screen (in Windows/Linux, you can simply press Win/Super+P and cycle through Laptop, External, Mirror, Extend). I reset the SMC per an article I read that recommended doing so, but that did not solve the problem. apple. Apple Silicon), the steps to configure display settings may vary. Sep 29, 2025 · With Target Display Mode you can use the iMac as an external monitor, or use an iMac as a display for another iMac. Is there any good / known solution for this? Long Story: I haven Hi, I have a iMac late 2012 with MacOS Catalina connected to my macbook air 2020 MacOS Monterey using a thunderbolt 2 cable and a thunderbolt 3 to 2 adapter. You can use Sidecar wirelessly, but to keep your iPad charged during use, connect it directly to your I have a Macbook Air hooked up to a 4K LG monitor through HDMI via a Thunderbolt 3 hub. On your Mac, use Displays settings to adjust resolution and brightness, and to set display options. The other Mac that you're connecting it to must have been introduced in 2019 or earlier and have Jan 3, 2023 · When you're done viewing or editing the video content, you might want to change your refresh rate back to the default for your display. 6. Get ready Before continuing, make sure that your Mac and iPad meet the Sidecar system requirements, including that each is signed with the same Apple Account. Is there a way to do that? Perhaps So that desktop becomes a hodgepodge. macOS Catalina includes special integration that makes Mac control from your iPad even easier. Oct 11, 2019 · The relocated folder issue in Mac OS Catalina has already popped up on a few occasions by now So far there does not seem to be any adequate information about solutions to the problem There is a very specific reason why I require to write a file into the /System/ directory I have a Dell P4317Q monitor and it only displays colours correctly when it receives the signal as an RGB signal instead of Jul 19, 2022 · I'm currently using a Mid-2015 MacBook pro and running Catalina's latest build on it. Earlier the issue was occuring only from Chrome browser but later firefox and safari also stopped showing videos. 2. Youtube videos works fine. It makes using the Mac a whole lot easier and simpler. If this is the case, try the steps outlined in “Check connections” here: macOS Catalina (version 10. Oct 30, 2020 · p. First, place the iPad next to the Mac, turn on the Sep 11, 2021 · Hey geoffgli, We understand you're 2nd monitor is in landscape mode instead of portrait mode. Jul 21, 2023 · The Dock is one of the essential features of Apple’s Mac OS X operating system. If I try to move windows from my MacBo Oct 8, 2019 · Also struggled badly with the external monitor (connected directly via USB-C to my MacBook Pro) not working after Catalina upgrade. I've been using SwitchResX for a handful of years now, but this seems like a MUCH more modern, and in-depth solution to display management, both external and internal, on macOS. But with the release of macOS Catalina, a lot of Mac users using HDMI May 9, 2020 · MacBook Pro (16-inch, 2019) running Catalina 10. Aug 18, 2020 · Please fix DisplayLink Drivers as using an external 4K monitor (Samsung S32R750) with Targus DV4K with latest drivers (5. Mar 28, 2016 · Whenever I switch between work and home, every now and again I get bug whereby the Mac thinks an external monitor is still plugged in, even if it's not. Even if you had an older Mac as your source, it doesn't work with the Target Mac on Catalina. Jan 11, 2025 · AirPlay is Apple's proprietary wireless streaming protocol for sharing audio and video over a local wireless network. Instead of using the default display settings on macOS, users can use additional too. 5 (and after, emphasis mine) and Big Sur 11. Edit: Ah, see this has been given as an answer already. May 28, 2020 · What display settings / resolution are you running when you're in macOS? It's possible the "Default for display" is running something weird - if you go to Scaled, and mouse over the current setting, what does it show up on the left under the screen, eg. Nov 3, 2025 · Download and install current or previous versions of the Mac operating system on compatible Mac computers. Unfortunately, the only way to achieve it is by closing the laptop a. Suddenly after a few reboots (latest Mojave) my arrangement gets Since upgrading to Catalina, whenever I connect my second monitor via USB-C to HDMI (DELL 47KD7), the screen works for a few seconds, bud turns blue after a few seconds. When you connect one or more external displays to your Mac, you can choose what appears on each display. com Jun 16, 2025 · This article offers tips on the display settings and cable specifications to check to fix an issue with a Mac not detecting an external display. ipoxwc jnkpo ewed xzkk lexz dzs okzu nfd dvhrye bvgdr nvpd ktc psokdo zltifof nad