#Hdmi not working mac 2016 update
#Hdmi not working mac 2016 pro
#Hdmi not working mac 2016 tv

Delete the preferences files I listed above if necessary. Set your Energy Saver prefs so the computer doesn't go to sleep. Shutdown and power on again instead of restartingĢ. However, shutting down and cold booting seems to result in both monitors working (after I log in, anyway).ġ. This fixed the problem temporarily, but if I restart or let the computer sleep I will lose the 4k monitor again.Įven without the preferences files, restarting seems to always leave me with one monitor. Then, they had me shutdown and reset NVRAM (holding Option-Command-P-R for two chimes). Yesterday, I worked with Apple support on this and they had me delete my windowserver preferences files, located at: I think I finally have a more reasonable workaround, though. That got both monitors working, but was a real pain. I was able to workaround this by unplugging the USB-C-to-HDMI adapter, booting, logging in, then plugging the adapter back in. With both monitors plugged in, the 4k monitor stays black on boot and after I log in. Ever since upgrading to Big Sur, I've had problems getting both monitors to work. The other is an older Dell plugged in via a USB-C-to-HDMI adapter and an HDMI-DVI cable. One is a 4k Dell plugged in via HDMI cable to the HDMI port on the mini. I have a 2018 Mac mini (Intel, of course) with two monitors. Are Apple and LG up to something? Are there not internal logs that capture these events?

#Hdmi not working mac 2016 pro

Solution: was to power off the MacBook pro and clean out the MacBook display port with a can of compressed air which I purchased at Walmart. It turned out the adapter was not making a good contact with my MacBook Pro display port.

#Hdmi not working mac 2016 tv

A long way from the Mac we have used so effortlessly in the past. If the HDMI isn’t working on your MacBook, check to see which HDMI version your specific computer model supports, turn on the Direct Displays options from within the computer, or turn off the TV while keeping the MacBook on, unplug the cable, plug it back into your Mac, then turn the TV back on. My external display was not working with a Display port adapter. I can get the 2 monitors to coexist, but it takes some messing around which I should document but haven't. Incidentally, I bought a CLDAY TB to 2xHDMI splitter adapter to try and I get the same crappy video on the Dell. Of note, when I connect my Dell U2412Mb, the OS continues to report the LG, causing totally bad video. My Main is a basic 2018 i3, 8GB ram, 128GB SSD.

#Hdmi not working mac 2016 update

I just posted my earlier experience on this issue -, and basically can update that since the 11.4 update, I have one LG 27MP35 running successfully, well overnight, on HDMI to HDMI. Check the end that plugs into your Mac, not the end that plugs. I brought the unit home and have been running on TB to HDMI until yesterday. Right side of MacBook Pro (Retina, 15-inch, Mid 2015): SD card slot, HDMI, and USB-A. I ask asked what monitor, and the tech said it was just some low end Samsung unit to keep the testing close to customers real world. I took my Mini into the Genius Bar and they said it ran fine for 2 or 3 hours on their test bench. To bad there are two, maybe more, threads going on this.