1 Reply Latest reply: May 11, 2013 2:24 PM by sterling r
ckkzzzle Level 1 Level 1

13 inch macbook air mid 2011 dvi to hdmi to samsung le37a551, reading "no signal" but i see samsung in display preferences


Was working and but if i move or tap laptop it would lose signal

i tried different hdmi ports on samsung tv and now tv says no signal

i am playing around with the display setting on my macbook air but still no luck what is the proper setup or how do i reset the display options on my macbook air mid 2011 and try again PLEASE HELP Thanks

MacBook Air, OS X Mountain Lion (10.8.3)
  • sterling r Community Specialists Community Specialists

    Hello ckkzzzle,


    I was looking into the issue you are describing and think I have a great article to help troubleshoot it. The article is called Apple computers: Troubleshooting issues with video on internal or external displays found here: http://support.apple.com/kb/ht1573.


    Start here, and work your way down as needed:



    Check connections

    When using an external display be sure to check the following:

    1. If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
    2. Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
    3. Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
    4. If more than one video adapter is in use—or "daisy-chained"—troubleshoot by using only one adapter.
      • Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
    5. If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).


    All the very best,