Putting a device into a low-power mode where only RAM is powered to conserve power at the expense of time to resume operation

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49
votes
7answers
35k views

Why won't closing the lid sleep my MacBook Pro with external monitor attached after upgrading to Lion?

Up until yesterday (with Snow Leopard), closing the lid would cause my MacBook to sleep whether or not the external monitor was connected. Since upgrading to Lion last night, closing the lid when the ...
41
votes
7answers
41k views

Is there any way to set a MacBook Pro to not sleep when you close the lid?

The most common use case I have for this is when I'm playing music over AirTunes, but don't want an open laptop laying around. Or when I'm syncing or downloading something. This isn't the same as ...
21
votes
5answers
13k views

Possible to run scripts on sleep and wake?

MacBook Pro 2010 running OS X Lion. Is it possible to run scripts on sleep and wake events? My specific application is that I've got Dropbox-synced Truecrypt volumes that I regularly use on both my ...
19
votes
10answers
10k views

How can I sleep the display from Terminal?

I'd like to be able to turn my screen off from command line. I know there's the keyboard shortcut ctrl+⇧+⏏ but I want to do it from a shell script or remotely. Is there a way?
18
votes
4answers
10k views

Delay in keyboard responsiveness after wake with Mountain Lion?

After upgrading to Mountain Lion, now when I open the lid to my 2010 13" MacBook Air, there is a 3-5 second delay between when the screen powers on and when the keyboard will respond to key presses in ...
16
votes
2answers
8k views

Mountain Lion sleeps too aggressively

For me, Mountain Lion always seems to sleep whenever there is no user action, even when the computer is still doing something. In my case it always sleeps in the middle of running a batch operation in ...
15
votes
2answers
1k views

When woken up from sleep, some Chrome windows are blurry

I have a 2nd monitor attached to my Retina MBP. I was on OS X Mavericks and had this problem, where sometimes the displays would go to sleep and when I wake them, many tabs within Chrome look blurry ...
14
votes
5answers
10k views

Is a 3-5 second delay normal for a Retina MacBook Pro to wake up from sleep?

For 3 days, I now got a new rMBP. I am a first time Mac user. I had a friend with a MBP and it usually wakes up in a mere second, as soon as he opens the laptop's lid up. However in my Retina MBP, it ...
14
votes
4answers
11k views

Why won't my MacBook Pro automatically sleep?

I have my MacBook set to go to sleep after 2 minutes while on battery (via the Energy Saver preference pane.) However, when I leave it idle, it only turns off the screen—it does not actually sleep. ...
13
votes
2answers
46k views

Using The Terminal Command to Shutdown, Restart and Sleep My Mac?

I'm getting more interested in using Terminal as an alternative way to address solutions on my Mac. I have seen this question entitled "Is there a better way to shutdown/restart OSX?". I would ...
12
votes
6answers
44k views

Put the display to sleep without putting the whole computer to sleep?

I like to use vnc on my ipad on my bed. I want the mac to go to a black screen so I can fall asleep while using the ipad, and not have to get up to shut down the mac afterwards. Is there anyway to ...
12
votes
3answers
4k views

Schedule multiple wake up times for Mac?

I have systems running Mac OS X 10.5.8 and 10.6.8 that I would like to schedule some cron jobs for with the Cronnix GUI application. I prefer those computers be asleep until the scheduled jobs start. ...
12
votes
3answers
18k views

What are the “sleepimage” and “swapfile” documents?

I was using Disk Inventory X and found a file called sleepimage in /private/var/vm/ It takes up 4 GB! I also found numerous other files in the same folder called swapfile0 swapfile1, etc. What are ...
12
votes
2answers
11k views

How can I keep my Mac awake AND locked?

I want to leave my Mac awake overnight so it syncs 4GB of data from Dropbox. I need to prevent the machine from going to sleep because that pauses the Dropbox sync I've been using Caffeine to keep ...
12
votes
1answer
601 views

MacBook Pro won't wake up when stacked on another sleeping MacBook Pro

I noticed a really weird behavior on my MacBook Pro today. I have two of them at work, a 13" late 2011 (which I don't use often), and a 13" early 2011 where I put a SSD (which is my main computer). ...
12
votes
3answers
9k views

Retina MacBook Pro takes a long time to wake from sleep

So here's the thing. The rMBP is on Mountain Lion with all possible updates. When I open the lid I can see the login screen just fine but it is unresponsive for several seconds, can't enter my ...
12
votes
3answers
12k views

How do you change the behavior of the power button in Lion?

On my Macbook Pro, whenever you press the power button it goes into sleep mode. How do I change this to do nothing?
11
votes
3answers
27k views

How to stop MacBook Pro (Retina) from freezing/locking at the login/authentication dialogue, after wake?

Steps to reproduce: Be doing anything Close the lid of the computer Wait around for a while Open the lid of the computer Login prompt for last logged in user appears, battery and time MAY update, ...
10
votes
6answers
6k views

Keyboard shortcut to sleep a Mac

I am looking for a quick way to sleep without closing the lid, or using the mouse. If it matters, I have Lion version OS and a MacBook Air.
10
votes
5answers
12k views

Mountain Lion aggressively hibernates

Recently, my MacBook Pro (mid 2012, 15 inch, 10.8.2) has started going into what seems to be hibernate mode after several hours asleep, whether it's plugged in or on battery. When I unplug it, it ...
9
votes
4answers
3k views

Why does my MacBook Pro take so long to go to sleep?

My Macbook Pro takes an awful long time to go to sleep when I close the lid. Considering that I generally want to close the lid and then carry it somewhere, I want it to be fully asleep so I don't ...
9
votes
3answers
493 views

Schedule a Mac to sleep, just one time

Is it possible to schedule a Mac to sleep just one time? I know I can set a schedule for it, but I want to have control over it. So occasionally I'll go to bed but leave a file transferring, and I ...
9
votes
2answers
634 views

How effective is Deep Sleep Mode?

I got frustrated from turning on my Retina MBP and waiting a few seconds while the systems loads from Deep Sleep Mode. I disabled it using sudo pmset -a standby 0 However, I would like to know what ...
9
votes
3answers
2k views

Can I configure my Macbook to unmount all external drives when I close the lid?

I have a new 13" Macbook Pro running Mavericks. This computer is connected to an external USB drive which I use for my Time Machine backups and for external storage Time Machine backups occur a few ...
9
votes
5answers
7k views

Waking display from terminal, general waking

This is a two part question. A practical, "how to" question is first, and then I ask for configuration suggestions. First, I put my displays to sleep at night, and I would like to be able to wake ...
9
votes
5answers
6k views

Why does my Mac take a long time (30+ seconds) to find my home wifi?

I have a retina MacBook Pro 15" running Mac OS X 10.9.4. When I wake it from sleep at work, it's connected to the wifi network before I've even entered my password. But at home, with a Airport Extreme ...
9
votes
2answers
12k views

Random Restarts with “Sleep Wake Failure” error on Mavericks

When I leave my Mavericks OS X MacBookPro idle for a while, very often it will crash and reboot by itself. After reboot, the Problem Report dialog will show up, telling that "Sleep Wake Failure ...
9
votes
4answers
655 views

Mac Mini 2011 - monitor wakes up messed up

I have an Mac Mini from 2011. Sometimes (I would say 80% of the time) when I wake up the monitors, after they've been sleeping, my main monitor (a Benq G2220HD 22″, connected via DVI → Mini ...
8
votes
3answers
5k views

how to find out the start time of last sleep

Is there a command to find the date and time at which a Macintosh computer last entered the sleep mode?
8
votes
5answers
8k views

External monitor resolution setting is lost after MacBook “wakes up” from sleep

I have recently purchased an external monitor that I am connecting to my MacBook Pro (Late 2009) using the MiniDisplay-to-VGA adapter. I have both the external monitor and the MacBook's monitor set to ...
8
votes
4answers
3k views

Mac does not sleep automatically in Lion!

My Macbook Pro will not sleep even though it is set in System Preferences → Energy Saver. I do not have any sharing options enabled (System Preferences → Sharing). I do not have "Wake ...
8
votes
3answers
4k views

Something keeps waking up my Mac, how do I find out what it is?

I have a Mac Pro that draws about 250 watts (so I read somewhere) when it's running full-bore. It apparently draws less than 90 when it's sleeping. For whatever reasons I like to leave it on ...
8
votes
3answers
7k views

My Mac mini's computer name keeps changing when it resumes from sleep

When I wake my Mac mini from sleep, it occasionally comes up with a dialog saying "The name of your computer "whatever" is already in use on this network. The name has been changed to "whatever (1)"" ...
8
votes
3answers
2k views

MacBook Air takes an eternity to come out of sleep

For the past few years I've been using a 2008 aluminum MacBook. The day the new airs came out I decided to switch so I purchased one to replace my well used MB. Lion has had its bugs, most of which ...
8
votes
1answer
314 views

Don't wake up external hard disk when saving to internal one

My problem is that I have an external hard drive connected to my Mac. Since it is only used for backup purposes, it is sleeping most of the time. However if I now want to save something (e.g. a ...
8
votes
2answers
5k views

How to fix DNS resolving issues on Mountain Lion after waking from sleep?

After I installed Mountain Lion the other day I've noticed something very annoying. Almost every time I wake my iMac (27", mid-2010, CI7) from sleep: it seems that something DNS-related is broken. ...
8
votes
1answer
675 views

How can I tell whether a drive is asleep?

Is there an application or command-line utility for Mac OS X to query a hard-disk to see if it is 'asleep' or 'awake' right now? (i.e. as controlled by Energy Saver / pmset disk sleeping preferences). ...
8
votes
8answers
473 views

G5 wakes up for no apparent reason

I’ve got a very odd problem with an old G5 of mine. It's a 2.3GHz Dual-Core G5 with Mac OS X 10.5.8. Sometimes, though not always (about 50/50), when putting the computer to sleep, it wakes up after a ...
7
votes
4answers
16k views

What happens when I close the lid on my MacBook Pro running OS X?

I'm a new Mac user. What happens when I close the lid on my MacBook Pro running OS X Lion? Is it sleeping? Or hibernating? Something else?
7
votes
2answers
5k views

Will I damage my HDD if I transport my MacBook in sleep mode?

Is it safe to carry MacBook with HDD in a bag while it has been put sleep? I.e. I know there are some risks of hard disk drive damage if one tries to shake them or rotate them while they're working. ...
7
votes
2answers
7k views

Why Does My iMac Wake Itself Up?

I have an early 2009 24" iMac. Lately, when in sleep mode it will occasionally wake up for around ten seconds with the screen off, then go back to sleep. Wake on LAN is turned off so I can't figure ...
7
votes
3answers
5k views

How to store sleepimage on secondary HDD on Mac OS X 10.6?

I have a MBP 2010 with Snow Leopard on it. I put an SSD in the place of DVD Drive and am using an awesome SSD(80GB)+HDD(500GB) combo for speed and efficiency for the right price. All I want to do is ...
7
votes
3answers
9k views

How to add hibernate mode to MacBook Pro

I have recently switched to Mac from Windows hence I do not have much information. I want my Mac to go to safe sleep state on closing the lid. I also need an extra option available somewhere which ...
7
votes
4answers
3k views

Is it possible to configure Internet Sharing to allow the computer to sleep?

TL;DR: Internet Sharing is preventing my Mac from sleeping. I need to manually sleep the system on a regular basis. I want a way to configure Internet Sharing to stop preventing sleep. I have an ...
7
votes
2answers
3k views

Why can't I run my MacBook Pro in clamshell mode?

I'm following these instructions to use my mid-2009 MacBook Pro in clamshell mode with a Bluetooth keyboard and trackpad. The keyboard and trackpad are paired with the computer and I've got the ...
7
votes
4answers
5k views

Force macbook to sleep when lid closed and external monitor connected in Lion

I know you have heard this before, but is there any app/hack that makes the computer behave like Snow Leopard when closing the lid? I don't want to hear about this being a duplicate question, as I ...
7
votes
1answer
3k views

What prevents export of a private key from Mavericks keychain?

In Mac OS X Mavericks, I'm not able to export a private key from keychain. I'm getting the following error message: /* In dark wake, no UI possible */ Searching it in Apple documentation fetched the ...
7
votes
5answers
7k views

MacBook does not sleep when lid is closed

I've looked around for answers and can't find something that works for me. I have a unibody aluminum MacBook Pro and it just doesn't seem to want to sleep when I close the lid. The problem started ...
7
votes
2answers
2k views

How can I prevent OS X from resetting/disconnecting from wifi when left idle?

Doing work at home, I noticed that OS X would drop my wifi connection when I left my 2011 MacBook Pro and it went into idle mode (screen black, but still powered on). When I moved the mouse or ...
7
votes
2answers
3k views

MacBook Pro won’t sleep automatically — no process preventing sleep according to pmset. What’s going on?

i noticed the following problem with my MBP 8,1 running 10.7.2 — automatic sleep just doesn’t happen. Since I usually put my Macbook to sleep manually before leaving the desk etc. I just noticed this ...