SusaNZ1972
Level 1 (0 points)

Q: I just downloaded an OS upgrade to my imac pro and now trouble connectiing to tv screen display

I can't see the macbook pro screen and the tv screen at the same time - it's one or the other - when the cable is in the macbook screen is not responsive - the menu bar is fuzzy - also I notice my display preferences are do not allow me to choose samsung etc.

help?

iPhone 4S

Posted on Apr 7, 2014 11:07 PM

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SusaNZ1972

Q: I just downloaded an OS upgrade to my imac pro and now trouble connectiing to tv screen display

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  • by sterling r,

    sterling r sterling r Apr 10, 2014 2:46 PM in response to SusaNZ1972
    Community Specialists
    Apr 10, 2014 2:46 PM in response to SusaNZ1972

    Hey there SusaNZ1972,

     

    It sounds like you are having trouble using your tv as an external monitor after a recent update. I recommend these troubleshooting steps from the article named:

     

    Apple computers: Troubleshooting issues with video on internal or external displays

    http://support.apple.com/kb/ht1573

    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. Try unplugging the video adapter or cable and then plug it back in.
    5. 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.
    6. If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).

    Reset the system
    You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:

    1. Start up in Safe Mode.
    2. From the Apple () menu, choose System Preferences.
    3. Choose Displays from the View menu to open the preferences pane.
    4. Select any resolution and refresh rate that your display supports.
    5. Restart your computer.

     

    Thank you for using Apple Support Communities.

    Regards,

    Sterling