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MacBook Pro :: What Is Clamshell Mode And How To Set It


I want to know what clamshell mode is and how do I set it?

Info:
MacBook Pro, Mac OS X (10.7.3)


View 4 Replies (Posted: Mar 28, 2012)

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Related Forum Messages for Mac:
MacBook Pro :: Airport Only Works When In Clamshell Mode Mode
One day I was using my MBP open and external monitor hooked up. Everything was fine until the internet went down suddenly while I was using iChat.

My airport wouldn't see a network and after a couple restarts and a few resets my airport finally connected to my network. Once connected it would only issue a self-assigned IP, which obviously wouldn't work.

I was able to get around this by manually entering in the correct info but the speeds were low at best, usually pausing and stalling every minute.

After frustratingly trying get it to work, I entered clamshell mode because there was no reason at the time to have dual monitors. Once I did, viola, the airport kicked in and started working full force. It's been this way for about a month now.

My laptop is a MacBookPro5,1 with a 2.8 GHz processor and 4 GBs of RAM.

I've read that airports will have serious degradation issues if overheated and while that may be the issue, it doesn't seem to be the case.

I have smcFanControl installed and the MBP seems to be relatively cool to the touch. The fans never seem to be loudly kicking in and I have it raised on a fan powered cooling pad.

I do, though, use pretty much every port on my MBP. External monitor, speakers, both USBs, and firewire 800 are all in use, so maybe this is a resource issue or a very area specific heat issue.

Posted: Aug 28, 2010

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MacBook :: (not Pro) In Clamshell Mode?
I'm running my MacBook (not "Pro") in clamshell mode to drive two external monitors.  Am I risking anything by having the lid closed?[url] Please bear with me for a second.  I'm a long time Mac user—since the Mac Plus came out—and diehard Power Mac and Tiger fanatic, so I'm new to Mac-Intels and Snow Leopard. A full description of my MacBook setup is here:[url] This is my only Intel Mac.  I rescued it from the trash, literally, after my wife had discarded because of a bulging battery that was making the keyboard, trackpad and mouse inoperative.  I only use it to run Photoshop 13 ("CS6") which doesn't run on my Power Mac G5 Quad.

Info:
PowerMac, Mac OS X (10.4.11), 2.5G5Quad,16GB,7800GTX 512MB, Tiger

Posted: Jun 3, 2012

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MacBook Pro :: How To Setup Clamshell Mode
I successfully migrated from my MB to a new MBPro. I seem to be unable to duplicate the clam shell mode of operating my Cinema display that I had hooked up to my MB. I set the bluetooth to wake the MBPro from sleep, which it does when the MBPro lid is open but it won't wake it when the lid is closed. This method worked perfectly with my MB.

Information:
PBook G4 15; MacBook 2.16 GHz Intel Core 2 Duo
Mac OS X (10.5.8)

Posted: Sep 17, 2009

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MacBook Pro :: External Monitor And Clamshell Mode
I have a new june 2009 15 Macbook pro and an external monitor hooked up to it. The awakening and everything works, but here's my question: The computer gets hot, real hot... What are the effects of the labtop's monitor and internals with using it when it's closed? The top of the computer gets really hot, and the screen, even though not on, is basically touching is while closed. I do high performance video rendering and don't know if I should use my computer in clamshell mode while doing this. My old 17" has screen bending and I don't know if it is because of this.

Information:
Macbook Pro
Mac OS X (10.5.8)
Intel 2.33 Core 2, Intel 2.8 Core 2

Posted: Aug 21, 2009

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MacBook Pro :: Screen Does Not Turn On - Clamshell Mode
I have an Apple 30" Cinema Display connected with the Dual Link DVI adapter to my unibody MacBook Pro. For the most part I use it in clamshell mode, but if I decide to use iChat or Skype I need to open it to use the microphone, speakers, and sometimes the camera. However, when I open the lid the screen does not turn on, but the everything else works (camera, speaker, microphone, keyboard, etc.). I need to know the following:

1. Is this normal?
2. I try to move an application window to the MacBook Pro to try to wake the screen but it does not wake. I also go to system preferences>display and click identify and nothing happens. I also try to increase the brightness by using F2 and again nothing happens. Will this cause any damage?
3. When in clamshell mode will the heat build up be a problem for the screen?
4. When I restart the screen comes on with no problem.
5. When I finally have both screens working I mainly use the 30" display, is it bad or will it create a problem long term to leave the MacBook Pro screen on if I am not using it?

Information:
MacBook Pro 2.8 Anti-Glare
Mac OS X (10.6.1)
Kingston 256 GB V+ Solid State Drive

Posted: Sep 17, 2009

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MacBook Pro :: Stream Video In Clamshell Mode?
Am I able to stream video to my xbox in clamshell mode? I don't have an external display, mouse or keyboard connected. Right now I just turn the screen off, but I'd like to close the lid.

I have a late 2008 2.53 with snow leopard

Posted: Sep 16, 2009

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MacBook Pro :: Always In Clamshell Mode (Lid Closed)
I have connected my mbp to the samsung 23" external monitor(and I am loving it ), and I figured that during the weekdays I am almost using it clamshell mode all the time.

Posted: May 10, 2010

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MacBook Pro :: Use External Display On Battery And In Clamshell Mode?
I can use the external display with my recently purchased MB Pro - lid is closed and external display works. But the moment I try to do this with the power not connected to the MB Pro - MB Pro goes to sleep. I can wake it up with the external keyboard but it goes back to sleep in a minute or two. And this problem goes away if power is connected.

Posted: Sep 22, 2009

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MacBook Pro :: 2010Mid - Can't Use Via HDMI In Clamshell Mode
I want to use MBP(2010 mid) that connect to HDTV that use monospace's HDMI-to-MiniDisplayPort converter in closed clamshell mode.

When MBP in "display open mode" and connect to REGZA that use MDP-HDMI converter,MBP can use in dual display mode.

But MBP closed clamshell (display closed) mode that connect to REGZA by monospace,REGZA can't display osx desktop at single display. and old Macbook(2006 mid) can display osx's desktop closed clamshell mode that use monospace and REGZA.

How to display to REGZA via HDMI in clamshell mode?

Posted: May 31, 2010

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MacBook Pro :: Clamshell Mode Without Attaching An External Monitor?
Is anyone aware of a workaround to get a macbook/pro to operate in clamshell mode (display closed) without attaching an external monitor?

Information:
2.66 MBP (2009)
Mac OS X (10.6.3)

Posted: Jun 11, 2010

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MacBook Pro :: Possible To Disable Closed Clamshell (Display) Mode?
I would like to disable the closed clamshell (display closed) mode on my MBP, where you can run the computer with its lid closed if it's attached to an external monitor. I don't ever do this (I use the MBP screen as a second monitor), and this option causes my computer to randomly wake up if I turn off/on my office lights, or accidentally press a button on my usb keyboard or mouse. I know there is no option to turn this off in the System Preferences, but is there a terminal hack that can do this?

Information:
Macbook Pro Core i5 2.4Ghz
Mac OS X (10.6.4)

Posted: Jul 17, 2010

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MacBook Pro :: How To Switch Monitor Instantly After Being In Clamshell Mode
So I use Skype Video a lot, and I use a Samsung external monitor.

The problem is that I have my MacBook in Clamshell mode nearly all the time, and at the moment, when I get a Skype video call, all I can do is open the screen on the MacBook and just have a black screen, (all video goes to the Samsung) so that when I want to look at the person I am talking to, I have to look away from the camera because the MacBook sits to the side of the Samsung.

My question is, how would I instantly switch on the MacBooks screen when receiving a video call and then have the Skype Video immediately under the camera?

Would this involve writing a script of some kind or does anyone know of any apps to download?

Information:
Late 2008 Unibody MacBook Pro 15" 2.4GHz
Mac OS X (10.6.4)
4 GB DDR3 RAM, NVIDIA GeForce 9600M GT and GeForce 9400M

Posted: Nov 10, 2010

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MacBook Pro :: Clamshell Mode - Error Getting Display Bounds
Not sure what time frame this started happening but everything was working fine for a while and all of the sudden my macbook started going to sleep on its own after a wakeup (BT Keyboard).

So far here is what I have done:
-Searching this problem brings no common resolutions, but it seems like its happening on the late 2008 models, just like mine.
-Replaced Mini display port and the dvi-d cable
-Got a new battery, needed one as the original one was over 400 cycles
-Reset PRAM and SMC
-Cleaned all Caches and Pref list files

Here is something I noticed in my console...searching this brings no resolution either
1/9/11 3:12:45 PMDashboardClient229_NXGetScreenRect: error getting display bounds (1001)

Information:
2.4Ghz, 4GB RAM, 500GB, 1066 MHz, DDR3, GeForce 9400M 256MB & (First Mac Ever!)
Mac OS X (10.6.6)

Posted: Jan 9, 2011

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MacBook Pro :: How To Use Clamshell Mode With Iphone As Wifi Remote
iv been up all night trying to figure out a solution this hdtv as external display problem, and i just cant figure it out. I want to, if possible:

1. connect the macbook pro (13" mid 2010) to my plasma tv

2. Close the lid of the macbook pro

Posted: Oct 27, 2010

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MacBook Pro :: Can I Use My 15" I5 2.4GHz MBP In Clamshell Mode ?
Can I use my 15" i5 2.4GHz MBP in "Clamshell Mode" connected to my 23" Samsung display without a Bluetooth mouse or keyboard connected?I realize I'd have no control over the system without an external mouse of keyboard, but if I am just watching a movie on the larger display, I'd love to just close the shell on the MBP

Posted: May 20, 2010

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MacBook Pro :: External Display Randomly Goes To Sleep In Clamshell Mode
I have latest MacBook Pro 17" with Snow Leopard. It is connected to my external display (30" Dell 3008WFP) with mini displa yport to display port cable [URL]. I'm using 2560x1600 resolution.

When in clamshell mode (with energy saving set to either better battery life or better performance) external display randomly looses connection and goes to sleep every few minutes or even seconds.

Information:
MacBook Pro
Mac OS X (10.6.1)

Posted: Nov 3, 2009

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MacBook Pro :: And Dell Inspiron Both In Clamshell Mode And Connected To Same Monitor
I've been searching for a vertical laptop stand for awhile now, since I use my MacBook Pro and my Dell Inspiron both in clamshell mode and connected to the same monitor. There were some pricy options out there ranging from $40 to $300, and then I found the perfect solution at the thrift store today for $1.50: a napkin holder.I bought one very similar to the one pictured here, and will be sanding it down and painting it black. It works extremely well as a vertical stand, and I'm getting a second for the Dell. Forget overpriced stands and repurpose something

Posted: Jun 18, 2009

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MacBook Pro :: Kensington USB Docking Station Unable To Go Into Clamshell Mode
I have a new MacBook Pro 17" laptop running Snow Leopard 10.6.2. When I had my old MacBook, I didn't like how I had to plug in the Power, Video, Keyboard, Mouse and Audio each time I went to use it. For this new computer, I bought a Kensington USB Docking Station (Model K33930)

[URL]

The device works as advertised. DVI external monitor connects to the back, as does my USB devices. When the laptop is powered on it takes about 30 seconds before the MacBook recognizes the USB Hub and then it mirrors the display on that external screen.

My problem is, i want to close the lid of my laptop and just have the external screen be my only display. This works fine if I were to connect all the devices manually, but that is the point of the dock.

Apparently from my reading, Clamshell mode only kicks in if the video cable is connected to the computer.

Information:
Macbook Pro 17" Mac Pro
Mac OS X (10.6.2)
Kensington USB Hub (K33930) For OSX

Posted: Feb 1, 2010

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OS X :: MacBook Stuck In Clamshell 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.

Posted: Dec 26, 2009

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MacBook Air :: Connect In Clamshell Mode?
I just learned that the macbook can work in a clamshell mode. As I understand it - there has to be a bluetooth device paired with the macbook and it must be set to wake the macbook. My question: I have a macbook air - and a macbook. I would like to place the macbook in clamshell mode and then - use its optical disc drive with the macbook air. Is this possible? I know the drive can be shared when the macbook is open - but is it possible when the macbook is in clamshell mode?

Information:
macbook air
Mac OS X (10.6.2)
macbook

Posted: Dec 3, 2009

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Experiencing extremely slow internet when using my Macbook (2.2 GHz core 2 duo, 1 GB memory) in clamshell mode after updating to 10.5.3. I use my Macbook with an external monitor (samsung 22" syncmaster), keyboard and mouse (However, when using the external monitor with the MBs top open I have no problem so I dont think its a problem with the monitor as some others have had).

When using my Macbook with its top down the airport display shows only one or two bars, and I need to wait from ten seconds to a time out for web pages to load on both Safari and Firefox. When I use the MB by itself I have no problems. The problem is not with the network as my roommate running a macbook 10.4.11 is fine (as well as a pc) and I have the same problem with slow Internet when connected to other networks.

Another problem I have had is with the sleep mode after updating to 10.5.2. The computer will not go to sleep when I leave the monitor and keyboard plugged in, also it will wake up at odd times (once every hour or so, this perhaps is due to the Bluetooth mouse I have connected).

Posted: Jun 10, 2008

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How does the Macbook manage airflow when closed? In contrast to the former version, the air vent kind of seems to be blocked when the lid is shut? My current CD 2Ghz Macbook already revs up its fans on light load when I use it in clamshell mode. Will this get even worse?

Posted: Oct 23, 2009

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MacBook Aluminum :: Wi-Fi Painfully Slow When In Clamshell Mode?
I'm considering buying a Twelve South BookArc Desktop Stand to save space when at my desk (I use an external display, keyboard, and mouse at my desk anyway). Available from Apple Store, the BookArc holds a MacBook in clamshell mode (vertically on end).

However, in learning how clamshell mode works, I discovered my network speed drops significantly when in clamshell mode. For example, I just ran tests with the lid open and in clamshell mode using Speedtest.net. With the lid open, my download speed was 18.49 Mb/s. In clamshell mode, my download speed was 0.49 Mb/s.

I then tried running the tests multiple times with lid open and in clamshell mode and consistently saw similar results. I also tried holding the MacBook vertically in clamshell mode so the display is in the same position it would be when open--just to be sure it wasn't an issue with the angle of the internal antenna. Similar results. Strange thing is, if I start a Speedtest.net test in clamshell mode then open the lid during the test, the speed quickly jumps up again.

I could live with a small decrease in network speed, but this is ridiculous. Wondering if its a problem specific to my MacBook, or a known issue with clamshell mode. Can anyone else reproduce?

Information:
MacBook 13" Aluminum (Late 2008)
Mac OS X (10.6.1)
2.4GHz, 4GB, 250GB

Posted: Mar 7, 2010

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MacBook Aluminum :: WiFi Becomes Slow When In Clamshell Mode?
I am posting an update to this topic [URL]I have been using the my MacBook 13 Unibody in clamshell mode for months without any Wi-Fi degradation or problems. My setup includes a Filco keyboard, a 24 Cinema Display, and an external iOmega DVD.Last week, I upgraded my router, and all of a sudden I have the problems described in the original thread (the download speed slows down to a crawl and I get disconnected from the network). The old router is a Linksys WRT54G, and the new router is a D-Link dir-628. Does anybody know why the clamshell mode would behave differently?

Information:
MacBook 13 Unibody
Mac OS X (10.6.4)

Posted: Aug 24, 2010

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Can you run the MacBook in clamshell mode without the power being connected?

Posted: Dec 14, 2010

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Pretty much what the title states, I have the new alpha numeric wired apple keyboard and I want to use my macbook in clamshell mode without having to open it up to power on, so is there a way to do it?

Posted: Jun 5, 2010

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MacBook Aluminum :: Running In Closed - Lid (clamshell) Mode?
New 2.4 glassbook, upgraded to 4Gb Crucial ram, using bluetooth mouse and keyboard, with external Dell 2007FP monitor. With my old MBP in sleep mode, I could connect the monitor, ethernet, and power, and when I plugged in usb with the lid still closed, the laptop would turn on and everything worked in lid-closed mode.
Now with new glassbook, do the same thing (using display port to DVI adapter), the machine whirrs up, the display turns on (without top menu), and then the laptop goes to sleep. Tried it on a different monitor, same problem. Am I the only one with this problem of the glassbook not wanting to operate in lid-closed mode?

Information:
MBP
Mac OS X (10.5)

Posted: Oct 26, 2008

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I'm looking into purchasing a new macbook for a friend. 90% of the time, it will be sitting on his desk hooked up to an external 19" normal aspect ratio display (i.e. not widescreen), with an external keyboard and mouse. He wants to operate it with the lid closed in clamshell mode - he does not want to see the laptop display when using the external display. The external display has a different resolution than the laptop display, so I do not want to operate it in "mirror display" mode (unless I'm misunderstanding how mirror display mode works).

So, I want to know if the following scenario is possible to set up: He's out and about using it as a laptop, comes home and closes the lid, plugs in the external display and everything and now he sees his desktop on the external display, and goes about his business, and then unplugs everything and opens up the lid and now he's back to laptop mode. No losing cursors of the side of the screen or having to change settings each time, etc. If the answer is yes, does this work fairly flawlessly, or should he expect to frequently have to redo settings or power things on and off in order for the settings to take hold?

Posted: Mar 27, 2009

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MacBook :: Clamshell Mode Break The Screen Or Over Heat The System?
ok i like to use my macbook as a desktop computer and was wonting to know if i use the clame shell mode will it break my screen or macke it over heat i kindea scared to do it can some one help me pleas i have a 2006 white macbook

Info:
magic mouse, Mac OS X (10.5.8)

Posted: Mar 17, 2012

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anyhooser, i followed the instructions for clamshell mode and i still cant get it to work. i have a wireless logitech mouse and keyboard, and i cant make them wakeup the computer when it's closed. i think i tricked it into working once or twice but i cant get it to work consistently.

Posted: Apr 23, 2009

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Posted: Sep 10, 2009

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Information:
Macbook, imac
Mac OS X (10.6.2)

Posted: Nov 30, 2009

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Posted: Feb 27, 2010

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Info:
MacBook Pro, iOS 5.1.1

Posted: Jun 24, 2012

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I have used my ultimate 11" on usual mirrored display on battery power and in clamshell mode.

A few hours ago, I was running many apps in mirrored mood and my air just began to lag so badly after an hour. Expose is slow as well as surfing and clicking. I wondered what happened. Then I plug back power supply and close the lid of Air, hence running in clamshell mode. It then returned to full speed.

Please help explain to me if title is true. It is disturbing to learn that plugging into to ext monitor could lag.

Posted: Jan 3, 2011

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Posted: Mar 14, 2012

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Is it possible to put my MBP ALU, in Clamshell mode without attaching a mouse or a screen? The point would be that I could leave certain programs running and be able to close my laptop at the same time; so an app that could do this would be fine too. So when I'm downloading loads at podcasts at once and want to keep it running when closing the lid.

Posted: Mar 7, 2009

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At one point I had my external monitor set up to work with windows, so I know how, but since then I have reinstalled windows. I haven't used windows in a long time, so didn't bother setting it back up. Recently, my macbook's screen broke, I can boot into OS X fine by plugging in an external keyboard or mouse, or simply by closing the lid quickly before the primary display loads, thus booting it into clamshell mode using only an external display. I cannot however do this with windows, and since my screen is broken I cannot set the display properties as I cannot see them. Is there any way to either boot windows into clamshell mode or set the display properties using keyboard shortcuts?

Posted: Jul 24, 2010

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OS X V10.7 Lion :: Why Does Mac Go Into Clamshell Mode When Cover Is Closed
I have a new MacBook Air with an External monitor. I have no keyboard or mouse or trackpads attached to it. When I close the cover, instead of going to sleep, it goes into clamshell mode. I even opened a support session with Apple, and the technician said I should take it to the Genius Bar. Did that and the Genius found that the same thing happens on every MacBook.Why doesn't it just go to sleep?

Info:
Mac Book Air, Mac OS X (10.6.8), 11.6"

Posted: May 27, 2012

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