Mac can't detect TV OR TV can't detect Ma? - Apple Community
...2) Turn off the HDMI device while your Mac is turned on Unplug the HDMI cable from your Mac, then plug it in again. Turn on the HDMI device. 4) Connect my other computer (Macbook Pro) to the TV. That didn't work either. 5) Hold ALT in System Preferences - Displays, and press Detect Displays....
https://discussions.apple.com/thread/252793271
External Monitor Not Detected After macOS? - Apple Community
...My setup: MacBook Pro 14" M2 Pro, macOS Tahoe 26.5, Samsung monitor over HDMI plugged directly into the Mac's built-in HDMI port. Classic symptom, the monitor powers on but stays black, and the Mac doesn't see it at all. Nothing in System Settings, nothing in system_profiler SPDisplaysDataType, nothing in IORegistry....
https://discussions.apple.com/thread/256135940
Samsung Odyssey Neo G9 57" monitor with M? - Apple Community
...I am trying to connect my Samsung Odyssey Neo G9 57-inch monitor (S57CG952NU) to my Macbook Pro M1 14-inch 2021 (NKL4L4TXRW) as an external display. The monitor supports resolutions up to 7680 x 2160 @ 240 Hz but in the display settings of my Mac I can only see resolutions up to 5120 x 1440 even though "Show all resolutions" is enabled....
https://discussions.apple.com/thread/255307883
Samsung M8 Monitor, connecting to Macbook - Apple Community
...Samsung M8 Monitor, connecting to Macbook Hello, I have a new Macbook Pro and i purchased a Samsung M8 Monitor to pair with it for work. Upon setting up, I can only see one option for connecting the two which is screen mirroring and there is a SERIOUS lag on the mouse, applications etc on the M8 Monitor....
https://discussions.apple.com/thread/253987610
My Mac will not connect to a new samsung ? - Apple Community
...Here's how to connect an external display. Connect the display to power and your Mac 1. Use your display's power cable to connect the display to power. 2. Use your display's video cable to connect the display to your Mac, such as to a Thunderbolt or HDMI port. Different ports might look similar, so it's important to identify the port correctly. 3....
https://discussions.apple.com/thread/255122298
External 4k monitor stuck at 30hz on m1 m? - Apple Community
...External 4k monitor stuck at 30hz on m1 macbook pro I've got an external monitor, 43UN700-B, connected to my m1 macbook pro (2021, running Sonoma 14.2.1) via hdmi cable. I've used hdmi cables that have "Cable with Ethernet" on them....
https://discussions.apple.com/thread/255506051
TV mirroring not working - Apple Community
...TV mirroring not working Want to mirror my MacBook Pro to (android) TV. When go to Screen Mirroring - there is NO drop Down menu. I have (new) iPhone, an iPad, and an Android Jetstream AGT418 box for TV (Bluetooth says TV is connected). NOTHING SHOWS UP. All are on the same Wi-Fi network, and are working fine....
https://discussions.apple.com/thread/255221658
Connecting my MacBook pro to Samsung TV - Apple Community
...Connecting my MacBook pro to Samsung TV My Mac Book pro does not appear on my smart TV. I am using an HDMI cable with Thunderbolt connection. I saw that others have this same problem when upgrading to a new OS. I have MacOS Catalina 10.15.4. Any help would be appreciated. Thanks....
https://discussions.apple.com/thread/251277487
Can't connect MacBook-Samsung smart TV vi? - Apple Community
...Can't connect MacBook-Samsung smart TV via AirPlay Just two days ago I was easily able to connect my MacBook Pro to my Samsung Series 6 Smart TV. I would click the AirPlay icon in the top menu bar and a code would appear on the TV screen that I would type in on the MacBook Pro keyboard, and I would be connected. No longer the case....
https://discussions.apple.com/thread/252044936
connecting MacBook Air to Samsung TV with? - Apple Community
...MacBook Air to my Samsung TV using the Apple adapter and an HDMI cord, it works fine as a second screen. When I do the same set up to connect to my mother's Samsung (newer than mine) TV, I can see what is on my MBA screen, but it jumps constantly....
https://discussions.apple.com/thread/252432742