I updated to sonoma 14.4.1 right now. Before updating, I connected to the monitor(DELL), which was working. However, as I've completed the updated, mac(m3) does not recognize it. Does anyone have the same problem?
MacBook Air 13″, macOS 14.4
SOLVED. I have 2 monitors that are daisy chained and ends into laptop. Same cable also provides power to my computer. So I disconnected that cable, and plugged the USB-C power cable that's connected to my brick into computer. Then I plugged the cable from the monitors into laptop and both monitors were immediately recognized. Unplugged the power cable from the brick and now everything is working normally. 🤦🏻♀️
I have the same problem with my M2 Pro and a Philips 345B1C 34 inch Curved WQHD Monitor, connected by HDMI through an adapter. All worked fine until the re-start after installing 14.4.1 this morning and the Mac now completely fails to recognise the monitor.
I also had this problem. I am using a MacBook Air, 15-inch, M2, 2023. Installing Sonoma 14.4.1 bricked my display support. I could no longer detect my LG UHD 32UP83A-W which was connected via USB-C cable.
My solution was to reset my monitor back to factory conditions. Upon doing so, my MacBook instantly recognized the monitor like it used to.
Same. LG UltraFine 4k on MacBook Pro 14" M1. 2 monitors daisy chained and connected to laptop via USB-C. Monitors dont even turn on unless connected to the computer so no idea how to factory reset them.
Same issue with M2 Ultra Mac Studio. LG C3 via HDMI worked fine before 14.4.1. Now it isn't recognized.
problem with recognizing an external monitor on sonoma 14.4.1
