Prevent sleep when close display?

I am using an external monitor. How do I prevent my MacBook Pro from sleeping when I close the display?
I do not use an external dock.
Is there a reputable external dock?

I agree, this needs to be a topic for all laptops from Apple.
I also need a quick, non-hardware way to accomplish this.
It seems it should be (at it's most complicated) an option accessible through Terminal or System Prefs, but it appears that it's not.
It really should be built into the OS, to auto-recognize that the OS is running on a laptop, give the option to the user (through system prefs, to have a one-click switch icon in the menu bar, to cause "No-Sleep on Lid Close", when activated.
I would call this function "Brooklyn" as in No Sleep til Brooklyn. It should also add the ability chose whether or not the screen comes on, and/or the computer wakes, upon opening the screen.
The track-pad mouse-button should also come default set to menu-click (right-click) when there is a finger on the trackpad, but this should be built into the OS, and it should be a preference setting. Otherwise, they really need to add a seperate button. Menu-clicking is just to useful.

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Monitor not going to sleep when close my lid to MacBook Pro

Hi. I was wondering if there was anyway that I could get my Dell E173FP monitor to sleep when I close the lid to my macbook pro. I do not have it on mirroring mode. When I close the lid to my laptop it will just switch my desktop to the monitor instead of the monitor going to sleep with my macbook. When I press the power button and click sleep or go to the apple menu and click sleep it will work though. This really irritates me and I would like It to sleep when I close the lid instead of having to do more. Please help.

Sounds like the system is going into Clamshell mode. Here's some info on that mode.
One workaround would be to disconnect line voltage as that's required for clamshell mode, there may be others.
http://support.apple.com/kb/HT3131
Regards,
Captfred

Prevent Sleep When Lid Closed on PowerBook

I hate to limit this question to only 12-inch PowerBooks since it is common to all Mac laptops, but since that is what I own, I'll put it here.
Basically, the title sums it up. I've seen some other similar questions on the forum but none have been answered with a satisfactory answer for me. It seems I have two options:
1) Connect display, mouse, and keyboard -- I've tried this and it works, but this isn't the solution I'm looking for.
2) Install some application, I forget the name but it has a red light bulb as an app-icon ... tried that and didn't like it and didn't get it to really work.
So ... here's what I'd like to do. When I close the lid on my powerbook, I'd like the display to turn off and nothing else. The network, audio, and disk drive, as well as everything else, stays active.
If I want the system to sleep, I will choose the sleep option from the menu and close the lid. Simple as that.
It is hard for me to believe that the closing of the lid *must force* a sleep, there has to be something that can be done to prevent it, right?

I agree, this needs to be a topic for all laptops from Apple.
I also need a quick, non-hardware way to accomplish this.
It seems it should be (at it's most complicated) an option accessible through Terminal or System Prefs, but it appears that it's not.
It really should be built into the OS, to auto-recognize that the OS is running on a laptop, give the option to the user (through system prefs, to have a one-click switch icon in the menu bar, to cause "No-Sleep on Lid Close", when activated.
I would call this function "Brooklyn" as in No Sleep til Brooklyn. It should also add the ability chose whether or not the screen comes on, and/or the computer wakes, upon opening the screen.
The track-pad mouse-button should also come default set to menu-click (right-click) when there is a finger on the trackpad, but this should be built into the OS, and it should be a preference setting. Otherwise, they really need to add a seperate button. Menu-clicking is just to useful.

MacBookPro doesn't go to sleep when close screen

I just upgraded MBP 2.16GHz Intel Core Duo to leopard. Everything went fine, except, when I close the screen Leopard does not go to sleep. When I open the screen, however, it just stays on a black screen, but the keyboard lights up in the dark so I'm pretty sure it's processing - just without showing the screen. If I close it again for a few seconds THEN it goes to sleep and I can wait a few more seconds to open it up where I was before. Obviously this is a bug. Is anyone else experiencing the same problem? Solutions?

If you have issues like that (my MAcBook did not want to go to sleep while it was connected to power...)
what you can always do is power up the 'Terminal' and then punch in 'pmset -g assertions'. That's shoing you which application is holdng your mac back from sleep.
More details about how to use 'pmset' HERE.

Prevent sleeping when streaming from iTunes to Apple TV ...

Hi,
Streaming to the Apple TV from iTunes does not reset the system's idle time, so it does not prevent the computer from falling asleep in the middle of a movie presentation. Monitoring iTunes CPU usage with an AppleScript handler does not work either ... the CPU usage is not amplified when iTunes is streaming to the Apple TV ... gosh !!
I created a not so perfect work around. I use Caffeine that resets the computer's idle time. Being a manual intervention, it is not a perfect. I am still looking for a better one, in order to prevent these 2 problems:
(1) I would like to find a way (shell script ???) to detect iTunes/Apple TV's streaming activity automaticaly: this way I could monitor the computer's idle time; not requiring the manual intervention of activating Caffeine is basic ... you realize the importance of this when the streaming stops in the middle of a projection and when you have to go in the den to awake your computer because you forgot to activate Caffeine; it is more frustrating, if you forget that repeatedly;
(2) while streaming to the Apple TV, the screen saver should be activated without allowing the sleep process.
These 2 could easely be done by reseting the system's idle time when streaming. It should be a standard iTunes/Apple TV features, nor requiring any work around.
Well ... hoping this will help to bring a more perfect solution.
Regards.
Robert Lespérance
Québec, Canada

Make sure DNS is set to auto (setting - general - network)
Try ethernet
Checking signal on device won't be an accurate network indicator, to get a full report go to istumbler or similar to see signal strength and any noise detected.

Preventing SLEEP when using External Monitor and Keyboard

Prior to Leopard, whenever I had an external monitor and keyboard attached and closed the MacbookPro lid the system would not go into SLEEP mode. Now it does.
What's to be done to prevent this from happening?

PS.... when this last occurred, the backup drive for Time Machine disconneted when SLEEP was invoke by closing the lid and did not reconnect when the system restarted.
I also received a 'warning' that a device was not disconnected properly.

White screen after waking from sleep when external display is attache

Waking from sleep mode to lock screen when a secondary monitor is connected with an HDMI cable presents a blank white screen with user icon but no other elements, including the box where one enters their password. The remaining UI elements appear only after disconnecting the HDMI cable.
Configuration:
MacBook Pro (Retina, 15-inch, Mid 2014) with nVidia GPU

Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.
Feedback
Mail/Provide Mail Feedback
Or you can use your Apple ID to register with this site and go the Apple BugReporter. Supposedly you will get an answer if you submit feedback.
Feedback via Apple Developer

Losing connection when close display

i am new to macs and one thing i am really hating is that when i close my laptop the internet connection goes off and on my old computer i could change that so that the internet connection was always on and i have serched all over this thing to find out how to do that but i just cant seem to find it so if anyone could tell me how that would be great. Thanks

Right here are the links. You will have to check about what it might do to your machines apparently sleepless can be used on 10.4.8 but is not fully supported.
Insomnia looks like it should be compatible with any OS from 10.4+
Sleepless:
http://www.macupdate.com/info.php/id/10564
Insomnia:
http://www.macupdate.com/info.php/id/22211
Dib.

Sleep option for display only yosemite 5K iMac

Hi
I've used a macbook in the past on snow leopard and lion and these had independent sliders for display and computer sleep. My wife bought me a 5k retina iMac at the weekend (i was shocked) and notice it only has a slider for display sleep.
Is this normal behaviour for yosemite on a new iMac? I see there is an option to prevent sleeping when the display is off, so does this mean effectively as soon as the display goes off the computer sleeps? Not good if you are using plea media library on your mac..
Thanks for any advice.

I noticed the same issue and cannot find any information as to when the iMac actually goes to sleep. It's unclear to me whether "Display off" = Sleep or not.
Meanwhile, there is a nice tool called "Caffeine" on the Mac App Store that will work well for you and your Media Server issue: https://itunes.apple.com/de/app/caffeine/id411246225?l=en&mt=12

Mini sleeps when display/TV powered off, even though apps are runnning

I have a new Mini (Late 2012) running 10.8.3, it is connected to a Samsung TV running Elgato EyeTV(HDHomeRun), as an HTPC.
When we switch to another input on the TV or power off the TV, the Mini sleeps, even though I have all the Energy settings to Never!
This box has our recording schedule and must be on 24/7 wether the Display is on or not.
I have sent crash reports from EyeTV to Apple related to the problem but have not seen any updates.
I've tried connecting the display from the HDMI and TB/Display port with the same results.
Mini Specs: Late 2012, Macmini6,2, 16Gb Ram, 2.6GHz i7, 1TB disk
I've waded through all the discussions and haven't seen any solutions/recommendations that I haven't already tried.
Is there a way to tell the Mini not to sleep when the display is diconnected or powered off?

Hi, no idea what you tried, but...
Open console in Applications>Utilities, check the system log for the date/time of the last problem & the Wakeup/Startup right after that for clues.

My Mac Mini goes to sleep when I turn off my TV.

Hello and thanks in advance for all help. I have a Intel mac mini that I currently have hooked up via DVI/DVI cable to my Sony LCD television. I recently upgraded the OS to 10.5 from 10.4. The issue that I am having after the OS upgrade has to do with the Mac going to sleep after I turn the TV off. It also goes to sleep if I set up the display to sleep after a period of time even if I have the computer itself set to never sleep. Right now I have the computer set to never sleep and the display to never sleep but when we turn the TV off the computer goes to sleep anyway. The reason why I need the computer to stay awake is because we use a Magicjack at our home for our local phone service and it is plugged into one of the USB ports on the computer. If the computer goes to sleep we loose our home phone service. I am wondering what could be causing the computer to sleep when the display is turned off. When I upgraded to 10.5 I did a clean install and not a upgrade.
Any help would be greatly appreciated.
Thanks very much to all.

Thanks so much for your help. This fixed things perfect. The only thing I may add for anyone else that has this issue is that it is important to reconnect the power cable to the computer first and then after a few seconds reconnect all of your other cables. The first time I tried it I reconnected the power cable last and it still didn't fix things. I gave it another try reconnecting the power cable first and now everything is perfect.
Thanks again for your help,
Rich

PB Wakes from Sleep When HDTV is Shut Off?

I have a 12"PB (10.5.6) hooked up via mini-DVI to VGA to a 47" LG HDTV (47LG50). I love this setup, but I'm having a problem keeping the PB asleep. When I'm done using the computer, I hit opt-apple-eject to put it to sleep and then switch the TV input to the cable box or whatever. The PB stays asleep successfully until I power down the television. At that point it wakes. When I try to put it back to sleep, the light on the front pulses once and then wakes again.
Anyone have any fixes for this? I'll even accept a work around, like having the PB sleep unless I hit a certain key combo or something... I don't want to leave the computer on for most of the day.
Thanks!!!

Hi, James. Not that I'm aware of. If there is, it probably involves entering commands into the Terminal, with which I have barely a nodding acquaintance. My one accomplishment in the Terminal has been instructing my MBP not to wake from sleep when the display is opened, and I managed that successfully only because someone more knowledgeable than I am told me exactly how to do it.
If that can be done, perhaps your computer could be instructed to ignore whatever little blip your TV set sends to the computer when you turn it off. But to do so, you'd have to know what the computer calls that little blip and how to incorporate its name into a command in the proper syntax. That's all well beyond me. I hope someone else will pitch in to help.

Turn off sleep when i close the display

Is there any way that i can prevent the macbook from go to sleep when i turn the display.
I often use the computer just for playing music or downloading, and i would like it to be able to close the display and let it stand by itself and work.
I have seen that it is possible if I connect an external screen/mouse/keyboard, but would like another way.
Someone said the computer would be to warm, but if it can work closed with a closed display when another screen it plugged in I cant see why this should be a problem.

Welcome to the forum.
If you're in to tech,you can read this.
Description and modification of the different hibernate modes
When the computer goes into sleeping mode, its behavior depends on a power management variable called hibernate mode. The hibernate mode can be set to different values:
* 0 : Default sleep behavior on most Apple computers. RAM is still powered on while sleeping. Wake up is fast. Safe sleep is disabled.
* 1 : Hibernation behavior. System is totally shut down while sleeping. RAM contents are dumped to disk. Wake up is slow.
* 3 : Default behavior on Powerbook HD computers. RAM is still powered on while sleeping. Wake up is fast. Safe sleep is enabled, so RAM contents are also dumped to disk before going to sleep.
Only a single mode can be activated at a time. In order to check what hibernate mode is currently active, the following command can be used in the Terminal application:
pmset -g | grep hibernatemode
In addition, users with administrator privileges can choose the hibernate mode. In order to do so, the following command can be used:
sudo pmset -a hibernatemode X
with X replaced by the value of the hibernate mode to set. You will be asked to enter your admin password. It will not be echoed.

HT3382 I have a Samsung VGA Monitor connected to my MacBook Pro using the Mini Display Port to VGA Adapter. How do I configure the computer so that it doesn't sleep when I close the lid of the computer.

I have a Samsung VGA Monitor connected to my MacBook Pro using the Mini Display Port to VGA Adapter. How do I configure the computer so that it doesn't sleep when I close the lid of the computer.

Hi alangium,
Welcome to the Support Communities!
Resetting your computer's PRAM should restore your Macbook Pro's screen appearance.
OS X Mavericks: Reset your computer’s PRAM
http://support.apple.com/kb/ph14222
This article may provide some information about your Mini DisplayPort to AVI adapter. Have you tried to connect a different VGA monitor to your Macbook to see if you get the same results?
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
http://support.apple.com/kb/HT3382
18. What is the maximum resolution available for use with the Apple Mini DisplayPort to VGA adapter?
The resolution available with the Apple Mini DisplayPort to VGA Adapter is 1920 x 1200. VGA displays that use higher refresh rates (such as 85 Hz) at resolutions of 1600 x 1200 or greater may not generate video properly until you lower the refresh rate.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573#5
How can I detect displays?
If the detect displays option is not available, hold down the Option key while you are in the Display pane.
How do I select additional resolutions on my display?
You can use the Display pane of System Preferences to specify how your display works. Not all options appear for all display models. By default the best resolution for your display will already be selected in System Preferences.
To select a different resolution, use the Scaled option. Some additional resolutions may be available when you hold the Option button.
I hope this information helps ....
- Judy

Won't sleep when I close display.

My computer runs even when the display is closed. A couple of times it has run out of battery while closed for 3-4 hours, and it's even spontaneously played music or movies I had open while the display was closed and latched and everything. And it should be cool to the touch when it's asleep, right? But it gets hot in it's case. I have to select sleep from the Apple menu and close the display when I hear the hard drive go off to get it to sleep with the display closed.

if it's still within 12 months hardware warranty call apple and have tech support diagnose the fault. If it turns out to be hardware related -which mine was- SEND IT BACK. IF it's hardware, there's almost zip you can do except wait longer and get closer to the end of your warranty.
My sleep issue...
http://discussions.apple.com/message.jspa?messageID=4126127#4126127
was hardware related and I ended getting a refund. Admittedly I have had a REALLY duff machine and the sleep issue was the last in a run of hardware malfunctions but if I never pursued Apple regarding a seemingly innocuous issue I would have come to the end of my warranty and been stuck with it. Now I have my money back - enough to buy a 17" C2D with a 200GB HD for less than I bought the original 15 in CD for. If it's broken get it fixed.
Hope this helps.
Ben.

Prevent sleep when close display?

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