mini displayport to hdmi not working mac

Your DisplayPort to HDMI Adapter or cable you are using may be damaged, causing the issue.Ĭheck for any breakage in the Adapter or any tampering with the cable. Damaged DisplayPort to HDMI Adapter/Cable This is a quick and easy fix, and you need to check before moving to any advanced troubleshooting steps.

You need to adjust the settings of your monitor or your TV to fix this. This is due to the wrong input type selection. Though your connection of DisplayPort to HDMI is proper, still there may be no output coming to your TV/Monitor, whatever your output device is. The connection between the wires may be loose, and it may cause issues in DisplayPort to HDMI connectivity.Īlso, if you are using an adapter, check both ends of the Adapter if they are hooked in properly, and one of the two connectors connected to the Adapter may be loose. This is a common type of issue that happens to cause the connectivity not to work and can be fixed easily. Several causes cause DisplayPort to HDMI cable not to work: 1.

There are times you will find a no signal error, particularly during the connection of the monitor or PC DisplayPort on the HDMI adapter. The DisplayPort and the HDMI connector offer the most incredible connection to the different HDMI devices.Īlso, it provides the greatest type of support to a variety of monitors. How’d it work for you? Let us know in the comments.Why does my DisplayPort to HDMI cable not work? (Causes) Using the above steps, I got HDMI sound working on my MacBook Air as well as my girlfriend’s MacBook. Your sound should now hopefully be working through HDMI under OS X Lion. Plug in your Mini DisplayPort or Thunderbolt to HDMI adapter, make sure that HDMI is selected as your Sound output in System Preferences and give your Mac a whirl. Once you’ve flushed both the SMC and PRAM, allow your Mac to boot properly. The instructions on doing this vary from computer to computer, but Apple’s got a great support document that explains how to reset the SMC on any Mac you own. If you do this correctly, your Mac will restart and you’ll hear the startup sound a second time.Ĭongrats, your PRAM’s reset! Now let’s reset the SMC for good measure. This must be done before you see the gray boot up screen.ĥ) Hold down the keys. Put your fingers over them, but don’t press them yet.Ĥ) Immediately after turning on your computer, hold down Command+Option+P+R. What you need to do are flush out your Mac’s PRAM and SMC, resetting them.Ģ) Locate (but don’t press) the following keys on your Mac’s keyboard: COmmand, Option, P and R. The fix is fairly simple, but it might take a few times.

Mini displayport to hdmi not working mac