HT3131 External display in Closed Clamshell Mode

This worked for me until today. Now the display just goes off on my external monitor if I close the lid of my macbook. It doesnt re-appear as it says in the article. MacOS X 10.7.5

Congratulations on taking one more step in becoming more self sufficient in tech stuff.
But I have to wonder why you spent so much on a Retina display only to have it cooking uselessly there.

Similar Messages

  • Can no longer use an external display in closed clamshell mode

    Hi,
    I have this weird problem that just started couple days ago. 
    I own a MacBook Pro Early 2011 since March. 
    It's always hooked up to an external display and the MacBook Pro's LCD is turned off (closed clamshell mode).
    Lately, if the MacBook Pro's LCD is turned off, the external display won't show anything.
    But as soon as I open the lid, the external display will then mirror the MacBook Pro LCD.
    If I close back the lid, the external display will get blank.
    I also tried to change the display settings with no luck.
    In other words, I can no longer use my external display with the MacBook Pro in closed clamshell mode.
    I'm wondering if someone experienced this problem before.  Thanks for help.

    Hello sebastieng
    Open both, your MBP connected to the external screen. Open Preferences click here on "Displays" and then make the external Window to the main window by dragging the bar (line?) on top of the laptop window to the external window, which makes the second window the main window.
    If this does not help you may read this:
    http://support.apple.com/kb/ht3131
    Hope this helps
    marek

  • Not waking up with external display in closed clamshell mode.

    Hello all!
    I have the newest Macbook (late 2009), and have had it docked in a BookArc using an external display, keyboard and mouse. Everything has been working perfectly since I got it a couple months ago. I've traveled with the Macbook and redocked it at home a few times. This morning, I woke the computer and the display lit up as usual. A moment later, the display went black, said no signal and the power light went yellow (it's blue when operating). I hit the keyboard and clicked the mouse to wake it again to no avail. Took the Macbook out of the stand, opened the display and it works perfectly. Checked my energy saver settings, fine. Closed the clamshell, redocked, wont wake/start the external display. Took it out of the dock again, everything is fine, rebooted. Docked again, no wakey. I'm using it now as a normal laptop typing this. Any ideas as to suddenly why it wont wake/work with the external display? Thanks!

    Last week I bought an Acer X223W 22 inch display for my MacBook (13-inch, Late 2009) – Model A1342 Polycarbonate Unibody and an Apple Keyboard MB110LL/A - Also using a Apple wireless Magic Mouse but not a BookArc. ( Just leaving on the desk next to the Acer display )
    I've found that you have to have the MacBook connected to the AC Power Supply to keep the MacBook awake when trying to use an external display. It's kinda a pain sometimes, I usually boot up my MacBook before connecting the Display and Keyboard then once I'm logged in......
    and Once everything is loaded I plug in the Keyboard first then The Display adapter cable, Close the MacBook up then Click/Move the Magic Mouse ( System Preferences settings - Bluetooth ( Advanced: Allow Bluetooth Devices To Wake This Computer - checked ) Energy Saver AC and Battery set to 3 hours ( All other settings Unchecked )
    Sometimes takes a few clicks before the Desktop appears on the external display, Now once its on I can open the MacBook ( just enough to help keep it running cooler ) and unplug the AC Adapter unless it needs charging.

  • HT3131 Operating MBP in closed clamshell mode with external display

    I have a new MBP retina display.  Trying to operate in a closed clamshell mode.  I connect a USB keyboard and a wireless mouse.  My external display is a Dell 2007FP display screen connected via a VGA adapter.  Whenever I close the computer lid to operate in clamshell mode the screen goes to sleep/power save mode.  Have tried various combinations of attaching keyboard and mouse first then screen, switching computer off on etc.  The external display states there is "no signal coming from computer"...any suggestions/advice would be greatly appreciate

    Congratulations on taking one more step in becoming more self sufficient in tech stuff.
    But I have to wonder why you spent so much on a Retina display only to have it cooking uselessly there.

  • HDMI Closed Clamshell mode display wake crash with Mavericks.

    Hi!
    Macbook Pro 2.8 GHz Intel i7, 16GB DDR3 RAM, OS X 10.9.3
    So, I am running a macbook pro with an external HD display through the HDMI out on the computer, and the comptuer itself running in closed clamshell mode. Sometimes when the display sleeps I can not wake it up again, to the extent that I have to unplug everything and do a hard reset of my macbook. If music is playing it begins to skip. The display attempts to turn back on but then the screen goes blank. This seems to only happen when the display sleeps, not the computer itself.
    I was just wondering if a) Anyone else was having this problem and b) if Apple were aware of it?
    I have done my research and I use closed clamshell mode properly (Restart my comptuer when plugging in to the monitor, sleep before disconnecting etc.) and so far I have not lost any data, however I am concerned that having to manually restart my computer 3-4 times a week may at some point severely affect a document I am working on, particularly with Apple's latest software such as Mavericks and Logic X seemingly being so volatile at the moment.
    Any help you could provide would be much appreciated!
    Thanks!

    Hello bambambam8am,
    Thanks for using Apple Support Communities.
    What troubleshooting have you done so far?  Have you reset the SMC and PRAM?  If not, follow the articles below for instructions:
    Intel-based Macs: Resetting the System Management Controller (SMC)
    http://support.apple.com/kb/HT3964
    About NVRAM and PRAM
    http://support.apple.com/kb/HT1379
    Take care,
    Alex H.

  • Closed clamshell mode on mba 13" - Keeps loggin out every 30 seconds

    I'm trying to use my MBA 13" in Closed clamshell mode, connected to a 27" Thunderbolt Display
    however it's not working-
    Every 30 seconds or so, it locks the screen, and makes me log in again.
    I have just reset my MBA to factory settings to see if that would fix it -
    Same problem.
    I also have a 13" MBPr - if i connect this to the same Thunderbolt display, I can operate it in closed clamshell mode no problem
    Any idea what's causing the problem?

    Oh..
    And i "meet the criteria" for closed clamshell -
    It's plugged in, external keyboard (bluetooth) and external mouse (bluetooth)

  • Display black leaving clamshell mode in sleep

    Any way to wake-up / reactivate laptop built-in display without rebooting? My machine is in clamshell mode about 90% of the time-- closed, connected to a display and keyboard. Always works fine when booting in regular, laptop configuration. However, I usually just sleep the machine as I disconnect from the external devices. Later, when I open the machine as a laptop, its built-in display does not always turn-on-- machine is clearly running, will usually go back to sleep if closed, and will usually wake-up correctly if reconnected to external keyboard & monitor in clamshell mode. Other times, nothing seems to establish correct display operation to either laptop's built-in display or to the external one. Luckily, everything is always fine after a forced reboot. I'm looking for some key stroke or something to cause display settings to go back to regular laptop mode. (This may relate to earlier threads "Macbook Display Output problems" & "Macbook and external monitor problem" http://discussions.apple.com/thread.jspa?messageID=3531667&#3531667 and http://discussions.apple.com/thread.jspa?messageID=3928012&#3928012)
    Thanks in advance

    I am having a similar problem.
    For a while, opening the laptop without the power cable would work, but now that solution doesn't work all the time.
    I have my MacBook running in clamshell mode with a firewire HD, DVD Burner and iPod dock plugged in. I am also using a bluetooth keyboard and mouse (Apple). I always eject the Firewire drives and unplug ipods. Then I sleep, and undue the USB connector, monitor (DVI) then power.
    Frequently, when I open up the MB later, as you described, the display stays off. I can often push the power button followed by the "S" key to sleep it, but waking it up again doesn't restart the display.
    In my Console.app log (system.log) I sometimes find this:
    "kernel[0]: display: Not usable"
    For whatever that is worth. It is very frustrating because a restart is the only thing that seems to work, and that sometimes causes data-loss as not everything is saved. Arrgh.
    Unfortunately, I don't have an answer.

  • HT3131 Display on to apple tv in closed clamshell mode?

    Hi Can anyone help me?
    When I AirPlay my MacBook pro display to my apple tv, all is fine.
    However when I close the lid, (clamshell ) with mains connected, my display drops out and turns off AirPlay on my MacBook pro?
    Any ideas please

    Yup. I have no issues using an external display in clamshell mode. It's only when I try to airplay to my apple tv while in this clamshell mode that I run into problems. So to clarify, there are 3 devices in my situation: my macbook, my external monitor, and my apple tv (which is connected to my hdtv of course, so 4 devices). Usually I just use my external monitor with my macbook closed. That works fine. But when I occasionally want to airplay to my apple tv as additional mirrored/extended monitor, I have to open up the macbook first to exit clamshell mode. Otherwise if I just go straight into airplay while still in clamshell mode, my hdtv shows a frozen image, my external monitor goes black and I have no choice but to manually turn off my macbook. Hope that makes sense. I think it would be easier if I could draw a diagram haha.

  • Distorted video on Acer monitor using closed clamshell mode

    I have a 15" Mid-Late 2007 MacBook Pro that I'm using in closed-lid mode with an Acer AL1917w monitor (DVI connection). After upgrading the Mac to Mavericks (10.9.2), I can't get the Acer monitor to display a non-distorted image when the Mac goes into closed-lid mode. With mirroring turned on and the MacBook Pro open, I can set the preferences to the highest resolution and I get a perfect image on both the MBP screen and on the Acer.
    However, when I close the display lid and the machine goes into closed-lid mode, the Acer monitor image changes to a slightly stretched, distorted image. This happens no matter what resolution I choose from the Displays preferences resolution choices.
    Again, it worked fine under Mac OS 10.5, but this problem shows up under 10.9.

    Hmm I can't think of any way to do that that doesn't involve wires and major mods (Drilling holes et al) .
    How to use your Mac notebook computer in closed-clamshell (display closed) mode with an external display - Apple Suppor…

  • Solution to Closed-Clamshell Mode in Lion

    Hello all!
    Lion has changed to default behavior of the internal screen from the old functionality in Snow Leopard. Previously, in SL (Snow Leopard), a Mac with an internal screen could be connected to external mouse, display, and keyboard and be ran with the external as the primary monitor WITH the laptop screen open. It is important to keep the screen open on laptops to release heat. Here are the steps to restore this functionality in Lion:
    I have found that this command in Terminal restores Snow Leopard functionality in Lion to closed-lid/clamshell mode.
    1. Open up Terminal in /Applications/Utilities
    2. Type the following command:     sudo nvram boot-args="iog0x0"
    3. Press return
    4. You will see a warning about using the sudo command. PLEASE make sure you typed the command into Terminal correctly. Mispelling sudo commands can     be... dangerous.
    5. Type in your password to confirm and press return.
    6. You should see Terminal move to a new line.
    7. Restart your Mac and the Snow Leopard functionality should be restored!
    Note: Resetting the PRAM will erase this modification. If you are ever told by Apple to reset the PRAM or need to do so for another reason, you will have to repeat these steps again. The mod holds as long as the PRAM is kept intact!

    hi Luke20333,
    Thanks for the info, really appreciated it!!
    But I think there's a little mistake in your instruction. It didn't work for me at first, but with a little googling I found the one that did the trick:
    instead of:
    sudo nvram boot-args="iog0x0" (step 2 of your instruction)
    I used:
    sudo nvram boot-args="iog=0x0" (= sign between iog and 0x0)
    Now I can close the lid of my MacBook without having to think if it's connected to an external monitor or not. Much more natural, like what we expect from Apple products...

  • MB switches to external display upon closing the lid - instead of going to sleep... what to do?!

    Since I updated to Mountain Lion (from Snow Leopard 10.6.8) my MacBook doesn't go to standby mode anymore, when i close the lid with an external display attached.
    Instead it switches the external display to be the primary display and keeps on running.
    It seems to me there used to be an option to choose how the MacBook reacts on the lid being closed. But as desperately as I looked fr it i couldn't find it.
    Is there still any way to tell my MB that it should just power down, when i shut it, even with another display attached?
    Hopefully it is just hidden away somewhere in the preferences... would be really stupid if Apple had taken that feature out...

    Like this:
    http://support.apple.com/kb/HT3131

  • Is it safe to use the MBP in closed clamshell mode?

    I've connected my MBP to my LCD TV and started to use it as my desktop.
    I'm deactivating the main display of the MBP by putting it into sleep mode and moving my mouse, so it wakes the computer up and shows image only in the TV, keeping the main display turned off.
    I'm constantly monitoring the temperatures of the MBP with iStat Menus. It seems that the temperature is always the same, no matter if the main display lid is open or closed.
    So, based on these 2 articles:
    http://support.apple.com/kb/HT3131
    http://support.apple.com/kb/HT1778
    Is it really safe to use the MBP with the display lid closed?
    If I decide to run a heavy load application (like a game) and the MBP starts to get warm, would it damage the display, because it is too close to the body of the MBP?

    Yes it's perfectly safe and designed to be used that way, 90% of the time this one's used in a similar configuration. The only time the fans come on 100% is when I watch Flash-based items from YouTube or similar. I've never run it for any extended length of time with the fans at maximum I must admit but as long as the air flow is good there shouldn't be any problem.

  • Satellite L500 - How to show external display after closing lid?

    Hi,
    i`m using the Satellite L500-120 Notebook, and before installing Windows 7 the laptop had a very comfortable function, when i applied an external display.
    When i closed the lid of my notebook, the desktop was shown on my external display (with the native resolution of the external display), so i didn`t have to
    switch anything at the Control Panel. In Windows 7, i`m missing this function. I already tried to use the Control Panel, but there are no settings, which fits
    with the earlier ones. I can duplicate the display, in order to see my desktop screen at my external display, but with the notebook resolution of 1366 x 768.
    If i extend the displays, then there is only the background image at the external display, but this time with the native resolution.
    So my question is, how to conifgure Windows to recognize that i closed the lid, and that the desktop screen has to be shown on my external display?
    Or do i have to install one of the Toshiba applications, which i had before, that realized this function?
    Thanks for any help!

    Hi
    Im not a Windows 7 user because I will wait until it will be released offical but I hope I can help you a little bit:
    First of all in Power Management you can choose the action what happens if you close the Lid (e. g. sleep, turn off, etc.). This action should be disabled because otherwise the notebook will shut down or something else.
    Then I think you have to install the display driver for your notebook. You can try the Vista driver because the most of them are work on Windows 7.
    Then you should be able to set the correct screen resolution for external monitor.
    A working display driver is important for clone or extends monitors so check this!!

  • HT201834 How to disable the closed-clamshell mode?

    Means I just want to close my external screen too after close my lid.

    We have no public interface to forcefully change the system state to Slate/Clamshell Mode from an application.  The mode is controlled by hardware only.
    Why do you want to change the mode from your desktop app?
    This posting is provided "AS IS" with no warranties, and confers no rights.

  • Closed clamshell mode-work with magic mouse & keyboard?

    does the clamshell mode work on the macbook pro w/retina (late 2013) with the magic mouse and keyboard?
    I know that it does with wired pheriperals, but im not sure if it does with the magic mouse and keyboard. if it does, i am going to go buy it, so i just need to know.

    Yes.
    <http://support.apple.com/kb/HT3131>

Maybe you are looking for