coloredpencils, Dell agents will need to you to connect the Windows OS only P2721Q to a Windows OS PC and retest. * Go back to the top of this Monitors Forum* Open the Pinned posts, "Dell monitor, Apple FAQ" [IMAGE] Read through the existing P2721Q discussions on the Apple Forum.
Hello, When I started up my computer (2017 MacBook Pro) this morning, my Dell P2721Q monitor worked as normal for a second, and then it said "No USB-C signal from your device.". This is after having worked with my MacBook for more than a year. Looking at other support documentation, I unplugged and replugged everything in every possible configuration of doing that, restarted my computer, restarted in safe mode, etc. When I upgraded to the new macOS (Ventura 13.0), the monitor worked for just a second and then went back to displaying the "No USB-C signal from your device" message. I tried plugging the monitor into my other MacBook, which I've also done every day for over a year, and that also did not work.I also tried to reset my monitor  to factory settings, but the button on the back of my monitor is only letting me see the menu where you can select an input (Auto, USC-C 65W, DP, and HDMI). No amount of holding down the button is letting me get to the main menu where I could do a hard reset. This is leading me to believe it's a problem with the monitor itself. Any help would be much appreciated. Thank you in advance!
P2721Q, MacBook Pro, No USB-C signal from your device