526      iPhone_iPad_Mac_apple

External monitor problem iMac 2017 High Sierra.

I try to connect a Samsung external monitor to my new 2017 iMac, but the monitor isn´t being recognized. I used the same monitor with my 2012 Mac mini and it all worked fine (even with two monitors).

I use a new USB – C 3.1 to DVI adaptor, but my iMac isn´t recognizing my Samsung monitor.

I have just updated to Mac OS High Sierra and it still doesn´t work (it didn`t work with Mac OS Sierra either).

And yes, I have opened up system preferences and Displays. Using my Mac mini, the Samsung display showed up in preferences.

Searching the net, it seem to be a problem for many people, but I cannot find a solution.

Any suggestions?

Thank you.

Jesper

Reset the iMac's SMC and NVRAM

Reset the System Management Controller (SMC) on your Mac - Apple Support

How to reset NVRAM on your Mac - Apple Support

Try a different USB-C to DVI adapter.

Google Search: USB-C to DVI adapters

最後更新：2017-09-26 22:21:14

  上一篇： MAC running poor per Etrecheck

  下一篇： delete of pictures for free space of icloud acc...