Disabled clamshell Mode

A couple of years ago, I asked a Mac technician to disable my clamshell mode. He did and it works fine, but now I'd like to reenable it. Does anyone know the specific terminal command? Sudo pmset -a lidwake 1 does not work.

What aspect of clamshell mode is disabled?
Below are the step-by-step instructions for using clamshell mode from Apple technical article HT3131:
If you are using a wired keyboard and mouse:
Make sure the computer is plugged in to an outlet using the AC power adapter.
Connect a USB keyboard and mouse to your computer.
With the computer turned on connect the Apple portable (using the appropriate Apple adapter if necessary) to the appropriate port on the external display or projector and turn the display or projector on.
After your computer's Desktop appears on the external display, close the computer's lid.
When you close the lid:
In OS X Lion, the external display will change to a blue screen, then will show your desktop.
In Mac OS X v10.6.8 and earlier, wake the computer up by clicking the mouse button or by pressing a key on your external keyboard.
You should now be able to use your Apple portable as you normally would, with a USB keyboard and mouse.
If you are using a Bluetooth keyboard and mouse on a Bluetooth enabled Apple portable:
Make sure the computer is plugged in to an outlet using the AC power adapter.
Verify that Bluetooth is turned on by using the Bluetooth pane of System Preferences or the Bluetooth menu icon.
Pair your Bluetooth keyboard or mouse with the computer. For step-by-step instructions, see this article forkeyboard pairing or see this article for mouse pairing.
In System Preferences, be sure that the Allow Bluetooth devices to wake this computer option is selected.
With the computer turned on connect the Apple portable (using the appropriate Apple adapter if necessary) to the appropriate port on the external display or projector and turn the display or projector on.
After your computer's Desktop appears on the external display, close the computer's lid.
When you close the lid:
In OS X Lion, the external display will change to a blue screen, then will show your desktop.
In Mac OS X v10.6.8 and earlier, wake the computer up by clicking the mouse button or by pressing a key on your external keyboard.
Are you using a wired or wireless KB and mouse? Which step in the process doesn't work?

Similar Messages

Disable clamshell mode via Terminal

Hi everyone.
Is there any way to disable "clamshell mode" and avoid my MacBook Pro waking up seconds after I close the lid?. I always use my MBP17 with a magic mouse, usb hub, external monitor and plugged magsafe but using both screens at the same time. I just would like to close the lid and enter sleep mode while I go away from my mac for five minutes without having to unmount drives, unplug magsafe and turn off mouse. It's crazy!!. I still can't believe there is no preference for that.
I know thats the wanted behaviour for using the external display with the macbook screen off but I just wanna send my mac to sleep for God sake!!
Thanks in advance and excuse my poor english.

Your English is much better than that of some native English speakers who post here.
Your MBP's waking up immediately after being closed, without your doing something to cause it, is *not a feature of clamshell mode.* In clamshell mode, the expected behavior is that the machine will sleep when the display is closed, and you will then wake it and bring the external display into operation *by pressing a key on the external keyboard.* If you don't do that, it stays asleep. So clamshell mode doesn't need to be disabled to stop the behavior that's annoying you, because that behavior has nothing to do with clamshell mode.
Instead, you need to determine which of the devices you are using with the MBP is interrupting sleep. This is nearly always caused by a USB device that doesn't understand sleep, and tries to communicate with the computer while it sleeps — which causes it to wake up. It may be your keyboard, your mouse, an external drive, a printer, scanner, ExpressCard device, Bluetooth cell phone, or even an SD card in the built-in card reader, if you have one. So first turn Bluetooth off and close the display to test for a change in behavior. If the MBP still wakes up a minute later, that wasn't the culprit. Disconnect your other peripheral devices one at a time, testing again after each disconnection, until you discover which device is responsible.

Disable Clamshell Mode?

Currently, I have a 3rd generation MacBook Pro hooked up to an external TV via the DVI output. When I close the laptop lid, the external TV becomes the primary (and only) active monitor, while the laptop stays awake. I believe this is called Clamshell mode.
I want the comptuer to go on sleep mode when I close the lid, even when connected to the external monitor, how can this be done? In case in matters, I'm running Lion, and am using an Insignia TV as my external monitor.
I am not afraid to using command line if necessary.
Thanks,
Rob.

I just want to be clear before I start SUDOing things:
This modification changes the MBP's behavior to simply sleep upon closing the lid when an external monitor is still plugged into the Mini DisplayPort? And the computer will awaken to both screens being on upon opening?
I Googled the sudo code you included and what I'm seeing is that people are using this to turn the MBP's screen off while the computer is open and on, and still be able to use the external screen. Essentially hitting the brightness key all the way down, but doing so in a way that actually turns the screen off (no ram or cpu usage, moving the dock to the external screen, etc).
Eh, I'm just going to test it out and see if this allows me to do I want to do: leave an external monitor plugged in and be able to swat the lid closed to totally sleep the computer. I'll post an update after I try.

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.

How to keep display on Macbook Pro instead of Clamshell Mode

I have an extended desktop through a Mini-Display Port-to-VGA connection from my Macbook Pro (OSX Mountain Lion) to an external monitor. I have the Macbook Pro screen set up as the "main screen" (with the display bar on top). But everytime I close my macbook pro, the computer goes into clamshell mode and sets the extended desktop as my "main screen" which switches my display bar. Is there anyway to tell OSX ML to always keep the Macbook Pro screen as the default and not go into clamshell mode?
This also creates a problem when I want to physically close my computer to allow to sleep, but instead goes into clamshell mode and extends the desktop to my external display. Any ideas?

this is from another discussion:
jk10003
Re: MacBook doesn't sleep when closing lid with external monitor attached with Lion Oct 14, 2011 7:01 PM (in response to admgtz)
I would like to offer this solution. I have a MacBook Pro with an external monitor, and, for a year and a half both displays slept when I closed the MBPS. This behavior stopped when I installed Lion. They would sleep when I removed the power cord, but what a pain that would be. The command "pmset -g assertions" gave no indication of which process ought be preventing sleep.
I contacted Apple support, and after some searching, the guy working with me found this thread, which was flagged as an Apple-approved solution:
https://discussions.apple.com/thread/3190417?start=165&tstart=0
This is the important part:
Correct AnswerRe: How do I tell Lion to disable the LCD screen even when the lid is open?
Aug 31, 2011 9:56 AM (in response to Bob_viking)
Here's the command to make your laptop behave like it did Pre-Lion (courtesy of my friend):
sudo nvram boot-args="iog=0x0"
Works perfectly for me. If it screws up your system, just zap the PRAM next boot (cmd-opt-p-r) and you'll be back to the default Lion state. Or if you can still get into terminal, this command will get you back to Lion's default state as well:
sudo nvram -d boot-args
Enjoy!
One snag was that I had to run it with the external monitor disabled, but it worked great!

How to get clamshell mode with Windows 7 on Macbook Pro?

Hi,
I am running Windows 7 on Macbook Pro using bootcamp. In OS-X, I can use this cool clamshell feature wherein after putting the MBP to sleep by closing the lid, as soon as I connect an external keyboard, mouse & monitor, I get the display on the monitor and immediately start using the keyboard & mouse too, converting the laptop instantaneously to a desktop.
I am trying to do the same thing on Windows 7, close the lid of the laptop to put it to sleep, connect my external monitor, mouse & keyboard, but however the laptop never wakes up (even after moving the mouse & pressing keys in the keyboard). I tried several things in Windows 7. Under Power Options, Disabled "selective Suspend of USB", but that did not help. Next, in the "Device Manager", for the "Root USB Hub" & "Generic USB Hub", I tried to set "Allow this device to wake up the computer", under Properties -> Power Management, but that option is grayed out. I tried to experimented with Sleep types like S1, S2, S3, but except for S3, the other two are shown as "not supported by firmware" (using powercfg option in command line). Countless hours wasted on google search to get this working with no success
I would greatly appreciate any help on this issue.
Thanks,
Sri

@mkultraviolent,
Thanks for the quick reply.
That seems to be a useful workaround, but I do not find the option mentioned in Display/ Nvidia control panel. However, I find an option in the "Power Options" which has a "Do Nothing" option in the combo box to select what "Closing the Lid" does. Is that what u are referring to?
Also, one problem in this approach is, if we do not sleep when the display is closed, that will keep the internal display (laptop's display) running in clamshell mode even after the lid is closed? (which will heat up the laptop badly).
The exact option I am looking for is, while the laptop is in sleep & lid closed state, connecting the external keyboard/mouse/monitor and pressing a key in the keyboard or moving the mouse should wake the computer from sleep. If this happens, the internal display won't be running. I am able to achieve this in OS-X.
In Windows7, I have a workaround by which I can almost achieve this result, wherein, while the laptop is in lid-closed, sleeping state, after connecting the external devices (keyboard/mouse/monitor), I open the laptop's lid for a fraction of second, quickly move my finger over the touchpad & close the lid again. This wakes up the laptop, & while it is waking up, Windows realizes that the lid is closed and that external devices are connected and gets into clamshell mode (I have verified that in this state, the internal display is not running).
This workaround was fine so far, but I got this hengedocks docking station for my macbook, and I am no longer able to use the workaround, because, after plugging my macbook into the docking station, I cannot open the lid. So, the only option is to make Windows7 realize that external devices are connected & wake up on external keyboard stimuli (Hence the question).
If my question is not clear, this video kind of explains what I want to achieve:
http://www.youtube.com/watch?v=YOKu9uwdwZI&feature=player_embedded
Appreciate ur help!

Can I use an external monitor/clamshell mode PERMANTENTLY?

What I'm trying to do is take my old TiBook 550 with its malfunctioning screen and busted hinges (grrrr) and effectively turn it into a low-budget version of a Mac Mini i.e. hook up a USB keyboard and LCD monitor to it and use it as if it were a desktop.
Now I have successfully attached the monitor and keyboard, turned on video mirroring etc. and it's all working fine. No problems with getting the thing to work. The only problem is I am having to keep the PB screen open slightly so that I can shut down and boot up for each session (for various reasons I don't want to leave it in sleep mode). Even though I bought a keyboard that has a USB power button on it, I am still unable to use it to boot up (I can shut down though).
As I understand it 'clamshell' mode only allows you to put the computer to sleep, so is there any way I can permanently tell the PB to ignore the on board LCD and only use the external display? My ultimate goal is to just have the PB sitting out of the way, lid closed (or lid removed??), whilst I use the keyboard and external display PLUS be able to shut down and reboot without having to prise open the screen, which is now quite damaged. Any ideas? TIA.
Powerbook G4 15 1.5Ghz Mac OS X (10.3.8)

Hi there,
I think you're right - Shutting down works via the keyboard but not Boot Up. It's weird because I'm sure I remember being able to do this once in the dim and distant past but maybe I'm wrong.
Anyway I've now hooked up my old laptop so that the screen is held ajar so I can reach the power button. After some research, I found out that the laptop should not be used with the screen closed for long periods anyway because of heat issues so this inelegant solution is probably the best in terms of keeping the temperature down.
Now what I need is some safe way of permanently disabling the display so that ONLY the external monitor works. If there was some way of doing that, at least I would not be wasting energy powering the original LCD. So far I have been able to disconnect the cable on the back of the screen that sends the 'data' to the LCD, but I've not yet been able to disable the back light.

Mavericks clamshell mode stopped working

I have a summer 2007 15 "MacBook Pro and since upgrading to mavericks clamshell mode doesn't work anymore. Now closing the lid doesn't do anything and the laptop screen stays on and the computer doesn't sleep. I saw a blog entry which gave a terminal code to boot with the internal screen disabled. This is not the ideal way and secondly the computer still thinks the screen in use and as a result still is producing the desktop associated with the internal display.
I want to have not only the screen off, gets really hot otherwise, but also the os to only create one desktop such that my windows don't get scattered over desktops that aren't visible. I just really need clamshell mode to work again.
Any thoughts?

Finally found a fix, i reset my smc. This not only returned clamshell mode back, but returned the fan level to a more normal and less noisy level. I guess the moral of the story is never update your OS while in clamshell mode.
http://support.apple.com/kb/HT3964

No keyboard, but Mac still goes into clamshell mode

How do I prevent this?
I have power attached and an external monitor. No keyboard, no mouse, no bluetooth devices, no USB devices. When I close the laptop lid it moves all my apps to the external monitor and stays on. I want it to sleep.
The Apple documentation says all 3 are required for clamshell mode: power, external monitor, keyboard. Apple store guy says it might be a bug in the OS.
Late-2013 13" rMBP w/ OS X v10.9.3.
Thanks.

Hi macmozz,
You can disable fullscreen from the about:config page, but to change it back you will have to follow the same instructions below:
# In the [[Location bar autocomplete|Location bar]], type '''about:config''' and press '''Enter'''. The about:config "''This might void your warranty!''" warning page may appear.
# Click '''I'll be careful, I promise!''', to continue to the about:config page.
# Please search for "fullscreen"
# Setting autohide to false
If firefox is not behaving it may be a corrupt localstore file. More information on this can be read on here[http://kb.mozillazine.org/Corrupt_localstore.rdf]

Sleep not working with external screen in clamshell mode

I have my macbook with Lion operating in clamshell mode with an external display connected as the main screen.
Although I have set the computer to sleep after 10mins, this never happens and I have to sleep the computer manually every time.
If I disconnect the external display, or open my Mac and work with both screens, the computer does sleep properly after the set time.
I can't seem to find the fix anywhere, and the people in the mac store couldn't help me either.
Can anyone help please?
Thx,

How to disable the closed-clamshell mode?
I think, this is what you're looking for ... maybe you want to uproot that question.

HT3131 Are there any ventilation issues with running a macbook air in clamshell mode?

Are there any ventilation issues with running a macbook air in clamshell mode?

...that makes sense to me.
but, why do so many MBA users (on this forum and others) claim that ventilation occurs through the keyboard? Is this claim based on an old macbook design?
for example, here's a related discussion (although fairly old):
11-08-2010, 12:16 PM
#6 (permalink)
SP Forsythe
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Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
Quote:
Originally Posted by tHE j0KER
Actually I you shouldn't close the lid while running on an external screen. The keyboard of the Macbook is an air intake for the fan. Close the lid, and it could overheat.
A common misconception of unknown origin. The intake and the exhaust for the cooling fan on the 13" MB and MBP are both located on the rear slot at the base of the hinge. In fact, you can actually see the divider that separates the intake flow from the output flow. If it were through the keyboard crevices, then an awful lot of overheats would result from people using impermeable keyboard covers, as well as Apple's warranty department would be flipping out over the Apple store carrying such covers. iSkin ProTouch FX Keyboard Cover for all MacBooks - Black Printed Keys on White - Apple Store (U.S.)
Does one think that Apple sells these only for use when the Notebook is off??? http://store.apple.com/us/product/TW...co=MTM3OTUwMDE Closing the lid, whilst operating the unit actually results in cooler operation due to reduction in power consumed by operating the display, which in supporting the on-board display generates heat far greater than simply powering the video port..
Does one think that Apple sells these for use only when the MacBook is off? http://store.apple.com/us/product/TW...co=MTM3OTUwMDEApples direction for use is specifically for when using with an external display.
Currently using:
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MacBook Air 11.6" late 2010 1.6 GHZ, 320M, 4GB 180 GB SSD Upgraded OWC), OS X Lion
11-08-2010, 02:34 PM
#7 (permalink)
ajreynol
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Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
once again, I've tried a few of these keyboard covers. the Moshi keyboard cover is the ONLY one I can recommend. the others are too thick or change the keyboard experience too much.
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11-08-2010, 03:34 PM
#8 (permalink)
doh123
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Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
1. Closing the cover will cause more heat. This is not because of covering the keyboard very much (though it does help some heat be retained). It's mainly because of the shape of the hinge and the fact when closed it covers up the back vent a lot more. For the best cooling, it is best to have the screen open. Just run it as a dual monitor, but make the external the Primary monitor, and if you don't want to use the built in, just turn its backlight off and don't use it.
2. The thing you plug into the wall is not a battery charger. The actual "charger" is built into the computer. It knows when to charge and when not to. If the little light on the power plug is amber, then its charging your battery. When its green, its just powering the laptop and NOT charging your battery at all.
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11-08-2010, 03:38 PM
#9 (permalink)
Wolfpup
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Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
I'd leave the lid open, at least partially...yes it may be fine not doing that, but you are making heat dissipate worse, of course could even theoretically hurt the screen.
As for the battery...well there's really only two choices, have it plugged in or not. As others mentioned, you can't overcharge the battery. It can be damaged a bit from heat, but of course the number one thing that's going to damage it is discharging it...so it's a no brainer-use it plugged in whenever possible, and try to charge it whenever possible when it's not plugged in.
11-08-2010, 03:45 PM
#10 (permalink)
SP Forsythe
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Re: Is it safe to use MBP with screen lid closed? Leave charge on always?
Quote:
Originally Posted by doh123
1. Closing the cover will cause more heat. This is not because of covering the keyboard very much (though it does help some heat be retained). It's mainly because of the shape of the hinge and the fact when closed it covers up the back vent a lot more. For the best cooling, it is best to have the screen open. Just run it as a dual monitor, but make the external the Primary monitor, and if you don't want to use the built in, just turn its backlight off and don't use it.
Nope. Apple would disagree with you on that one. Any "closure", which is, when compared to the amount of CFM, is insignificant. In fact, the opening size remains the same. it is only deflected at a slight angle when the lid is closed. Tilt your MBP and see. As well, shutting down the display lowers the heat being generated, even in the lower case. As I said, if it were a problem, Apple would not be selling stands designed to operate your unit in the closed position as the original poster of this thread proposes to do.
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Disable clamshell/external only feature?

I frequently have an external display connected and use both laptop and external display. Sometimes when I leave my desk for a bit I close the macbook to sleep. No problem so far.
Occasionally, when I return to my macbook and wake it by opening the lid, it wakes to just the external monitor only. I figure this is because the mouse gets jiggled enough while sleeping to wake it, it assumes only the external monitor is required because the macbook is still closed, that's the way it's supposed to work. But it's a bit annoying, is there any way to turn off the clamshell feature so I always come back to two screens?

Your English is much better than that of some native English speakers who post here.
Your MBP's waking up immediately after being closed, without your doing something to cause it, is *not a feature of clamshell mode.* In clamshell mode, the expected behavior is that the machine will sleep when the display is closed, and you will then wake it and bring the external display into operation *by pressing a key on the external keyboard.* If you don't do that, it stays asleep. So clamshell mode doesn't need to be disabled to stop the behavior that's annoying you, because that behavior has nothing to do with clamshell mode.
Instead, you need to determine which of the devices you are using with the MBP is interrupting sleep. This is nearly always caused by a USB device that doesn't understand sleep, and tries to communicate with the computer while it sleeps — which causes it to wake up. It may be your keyboard, your mouse, an external drive, a printer, scanner, ExpressCard device, Bluetooth cell phone, or even an SD card in the built-in card reader, if you have one. So first turn Bluetooth off and close the display to test for a change in behavior. If the MBP still wakes up a minute later, that wasn't the culprit. Disconnect your other peripheral devices one at a time, testing again after each disconnection, until you discover which device is responsible.

Mid-2010 MacBook Pro stuck in clamshell mode?

I asked a similar question to this earlier, but now the problem has been more consistent. I have a mid-2010 MacBook Pro that I often use with an external display, plugged in via mini-DVI to HDMI adapter. The problem is, after I've unplugged my macbook to "go mobile" and am away from my display, if I ever have to restart my computer or boot into Windows 7, my computer will think it's still in clamshell mode. The screen will stay dark, and if the lid is closed, the white light will stay on steadily, not pulsing. However, if I plug into my external display when this is happening, the external display works fine and I have a display again. When I look up my displays while connected to an external display while this is happening, my internal display isn't even listed in the system report; it's like it doesn't exist! And this is especially a problem now as I am away on a 3 week school related trip.
I have not been able to consistently reproduce this problem. Sometimes it restarts normally, sometimes I restart it and get the gray + apple logo screen that then goes dark, and sometimes the internal display just never turns on. The problem doesn't seem to be related to an OS, as it happens when booting into Windows 7 OR mountain lion 10.8.5. I've tried resetting PRAM mutliple times as well as performing an SMC reset multiple times, and neither has helped. This even happened when I was booting into a mountain lion install USB, as I thought maybe a fresh install would help. I've seen many other forums discussing a similar issue, but none described quite like mine.
What gives?? How can I get my macbook to restart normally? I really don't want to have to make a repair, even though it's looking like a hardware problem. My computer is one month after Apple Care has expired, and I can't afford a pricey repair as I'm a very in debt student who only has a MacBook because his school gave it to him in the first place. I would be very appreciative for any suggestions and/or help! Thanks!

Hello thedoctor8706
Reset your NVRAM and test to see if that resolves your issues. Typically that will resolve video, volume, startup disk selection, and kernel panic issues.
About NVRAM and PRAM
http://support.apple.com/kb/HT1379
Thanks for using Apple Support Communities.
Regards,
-Norm G.

Can running Macbook Pro in Clamshell Mode cause problems for Macbook Display?

Hi,
I recently got a new monitor (Dell U2711) and it is stunning when running at full resolution through a mini displayport to displayport adapter. However, i ran my MBP in Clamshell Mode and after rebooting (without the display this time) i had horrible lines across my screen. It was like a grid, but they were tiny, it was like i could see the individual pixels or groups of about 4. I turned it off straight away and when i came back to it (about an hour or 2 later) it was as normal.
I just want to know what is the regular behaviour of running in Clamshell? Is that to be expected? I know that Macbooks dissipate heat through the keyboard, so i wonder if it could be a heat related problem, and if that's something i should be worried about in relation to causing long term damage to my mac's display, or will it always sort itself out?
Sadly, i can't recreate the problem as i have a faulty monitor and it needs to be sent back (i will be getting the same model as a replacement though).
Does anyone have anything to say on this matter?
Thanks in advance
mrmeister

Shootist007 wrote:
Is this a brand new, less then a year old, MBP? If it is then take it to a Apple care center and have them look at it.
It's a refurb late 2008 that i bought in late 2009, but i do have apple care until september 2012 i think, i guess if the problem happens again i can take it in and they can sort me out.
eww wrote:
MBPs don't dissipate any significant amount of heat through the keyboard. No matter how often that misconception is posted, it's still a misconception.
Ok, so it shouldn't be anything to do with heat then, i know the top left corner (closest to the screen) gets pretty hot too, just above the speaker, but from Shootist007's post, it would appear that heat doesn't have anything to do with it. I mean, i wasn't running intensive tasks, i was only browsing the internet.

Horizontal shifting bars on MBP 15 after disconnecting 24" LED cinema display and waking up from clamshell mode.

I use my MBP 15 (late 2011) with 24" Apple LED Cinema display in a clamshell mode. After disconnecting external display, and opening display, it shows horizontal shifted bars, so it becomes completely unusable. Have to hard reset laptop. Any hints on how to resolve this? Thanks.

Ok, more information for anyone that might care. The wake-up seems to be the familiar dark wake in order to go into hibernate mode. Except now, it's a death wake. Looking at the logs, I see that it happens exactly 70 minutes after sleeping, even though hibernatemode = 0 (which shouldn't hibernate at all!)
So my power settings look like this:
Currently in use:
standbydelay         4200
standby              1
halfdim              1
hibernatefile        /var/vm/sleepimage
darkwakes            0
gpuswitch            2
disksleep            10
sleep                10
autopoweroffdelay    14400
hibernatemode        0
autopoweroff         1
ttyskeepawake        1
displaysleep         2
acwake               0
lidwake              1
standbymode is 70 minutes, what a coincidence. I'm going to try setting it to 0 and see what that does.

Disabled clamshell Mode

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