ClamShell Mode not working anymore

Discussion in 'MacBook Pro' started by lgwells1, Jan 25, 2012.

  1. lgwells1 macrumors regular

    lgwells1

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    #1
    I used to be able to hook up my 2011 MBP to my flat screen with the Rocketfish Thunderbolt to HDMI adapter. Now when I close the laptop to use in clamshell the Samsung TV says This Mode is Not Supported. Weird, because it worked fine a few weeks ago, now it doesn't. I even tried a few different settings in the Display Preferences...nothing. I tried plugging in the thunderbolt adapter before booting, and after booting and restarted the computer while it is already plugged in. Nothing. Yes I have the MagSafe attached.

    If I have the MBP open, it works fine. Soon as I close the lid it displays the error on the TV. I am using the BT Keyboard and Magic Mouse. I also have BT Devices can wake machine enabled.

    Any ideas?
     
  2. lgwells1 thread starter macrumors regular

    lgwells1

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  3. heisenberg123 macrumors 603

    heisenberg123

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    #3
    does it work with the screen open?

    i know that it should work with it closed but if it doesnt work either way you might have a defective cord or thunderbolt port

    also for calmshell mode there is a few rules that maybe your not following that you did weeks ago when it worked without realizing it

    for instance you need to be plugged into the magsafe charger, have a mouse and keyboard attached either with usb or bluetooth
     
  4. lgwells1 thread starter macrumors regular

    lgwells1

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    #4
    I stated in the original post, I am use a Apple Bluetooth Keyboard and Magic Mouse. I also mentioned I have the mag safe plugged in when I have the MBP hooked up to the TV.

    Guess I will have the recheck the cable, or mess around with settings again. :(
     
  5. heisenberg123 macrumors 603

    heisenberg123

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    #5
    since it works with the lid open its hard to think its the cable
     
  6. Mojo1 macrumors 65816

    Joined:
    Jul 26, 2011
    #6
    Make sure that the MagSafe is actually plugged-in and the light is on. I was having a similar problem recently and I didn't notice that the juice wasn't getting to my MBP. D'OH! :rolleyes: I was in the process of figuring out what was wrong when I finally noticed that the light was off...

    Since it isn't likely that is your problem, the easiest step to take in your trouble-shooting is to get another cable.
     
  7. lgwells1 thread starter macrumors regular

    lgwells1

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    #7
    I am still not having any luck with this dilemma. I bought this mac in late Aug or early Sept. Can I still call Mac Support for free? Or at least email them for free?
     
  8. chrisvee, Jan 30, 2012
    Last edited: Jan 30, 2012

    chrisvee macrumors regular

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    #8
    Assuming that is Aug or early Sept of last year, yes you can call. You have free support for a year.

    EDIT: Correction, it is actually 90 days of phone support.

    And, this.
     
  9. Mojo1 macrumors 65816

    Joined:
    Jul 26, 2011
    #9
    You get 90 days free phone support; to extend the time period you will need to buy extended AppleCare. The L.A. Computer Co. and B&H Photo tend to have the best prices.

    I suggest posting your problem on the official Apple forum. There is also a Samsung TV forum here: http://forums.cnet.com/samsung-forum/.
     
  10. iforbes macrumors 6502

    Joined:
    Dec 21, 2011
    #10
    I believe that included telephone support is 90 days. You are still under warranty so I would bring it in to a store if you can't figure out the cause of your issue.
     
  11. lgwells1 thread starter macrumors regular

    lgwells1

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    #11
    I live about 2 or so hours away from an Apple Store.
     
  12. D.T. macrumors 603

    D.T.

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    Sep 15, 2011
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    Vilano Beach, FL
    #12
    Weird, it's like clamshell mode is switching the external output mode (from something supported like 1920x1080 to something not).

    Is it a 15 or 17 with the discreet GPU?

    I only ask because that combined with something like gfxCardStatus can create some funky operation if you've tweaked the prefs in gfxCS (I sometimes forgot to re-enable the discreet mode for using my external after running on integrated).
     
  13. lgwells1 thread starter macrumors regular

    lgwells1

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    #13
    I have the 13" with HD 3000 Graphics.
     

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