Results 1 to 5 of 5
  1. #1


    Member Since
    Dec 27, 2009
    Posts
    3
    MacBook stuck in clam shell mode
    I had a problem with my laptop where the lcd on the monitor does not always work, presumed to be due to a loose inverter cable or something similar to this. As a temporary solution I have been using an external monitor for the past few days. Depending on whether the laptop lcd is working, I have had it on both mirrored and dual monitor settings.

    However, this evening when I have come to use it, the external monitor is now the only one that is working. Options to turn off mirror display have now gone. Also, the button on my mouse pad no longer works, yet the pad itself does.

    I have come to the conclusion that my laptop is in 'clamshell' mode. It remains on, and does not sleep when I close the lid. I have put it to sleep form the apple menu, disconnected the external monitor, and the opened the lid again, and when it turns back on from sleep, the screen flashes on for a second, but then goes to sleep again. I have tried turning it off, restarting, taking the battery out, everything I can think of, but unless the external monitor is connected it almost immediately goes back to sleep.

    Any ideas guys?

  2. #2

    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Location
    Lake Mary, Florida
    Posts
    26,876
    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Try resetting the PRAM. Immediately after turning the machine on, press and hold Command + Option + P + R. Continue holding until you hear the system chime twice. If that doesn't do the trick, I would consider opening it up and checking the LCD flex cable, tracing it from the back of the screen to the system board. Inverters are a common point of failure too and they are typically very easily replaced.
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

  3. #3


    Member Since
    Dec 27, 2009
    Posts
    3
    Quote Originally Posted by cwa107 View Post
    Try resetting the PRAM. Immediately after turning the machine on, press and hold Command + Option + P + R. Continue holding until you hear the system chime twice. If that doesn't do the trick, I would consider opening it up and checking the LCD flex cable, tracing it from the back of the screen to the system board. Inverters are a common point of failure too and they are typically very easily replaced.

    Thanks for the fast response. I've reset the PRAM, or at least think I have. Did it multiple times... Hasn't helped I'm afraid. If I turn the laptop off, disconnect the external monitor and turn it the laptop on again, the laptop screen remains on until it gets to the login screen, and then it goes to sleep. I wouldn't feel too confident taking it apart / would have no idea what to do, so any other suggestions.

    Also:
    Rather bizarrely, I restarted my computer this morning after an update, and it was working fine. Connected the external monitor again and it worked okay for about a minute. Then, all of a sudden, the computer went to sleep, came back on and now it is in clamshell mode again. It wasn't doing this when I first got the monitor, no idea what could have changed!!

  4. #4

    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Location
    Lake Mary, Florida
    Posts
    26,876
    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Unfortunately, I think your problem may be more severe than you originally thought. Without being able to check the hardware, I'm afraid there's little else you can do at this point.

    Check out the guides on iFixIt.com, it might not be all that bad if you're handy with a screw driver.
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

  5. #5


    Member Since
    Dec 27, 2009
    Posts
    3
    Okay, thank you. I just struggle to see any logic as to why the laptop screen is capable of working, and does when it turns on, but then goes to sleep, and why it's fine with an external monitor plugged in. It is displaying all the signs of being in clamshell mode, but is unable to come out of it. Thanks for your help though!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. WARNING: Clam Shell Mode = Problems!
    By MBPro89 in forum Apple Notebooks
    Replies: 13
    Last Post: 10-29-2013, 06:57 PM
  2. Macbook pro stuck in zoomed in mode
    By ndubz in forum OS X - Operating System
    Replies: 13
    Last Post: 03-31-2012, 02:37 PM
  3. Clam Shell Mode on new Macbook Pro's?
    By MBPro89 in forum Apple Notebooks
    Replies: 1
    Last Post: 12-21-2011, 09:18 PM
  4. External display & Clam Shell mode.
    By chscag in forum Apple Notebooks
    Replies: 6
    Last Post: 07-25-2010, 11:18 PM
  5. Clam Shell - Windows XP
    By sprucio in forum Running Windows (or anything else) on your Mac
    Replies: 10
    Last Post: 02-21-2010, 11:00 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •