For example, if you don’t want your Mac to go to sleep on weekdays when you’re at home, you could set your Wi-Fi network and a particular time range. Alternatively, you could set up Amphetamine to keep your Mac awake anytime your download manager is open. Open System Preferences, and go to Energy Saver section. Here you see two sliders for Computer Sleep and Display Sleep. The sliders range from 1 minute, to Never. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. If you have Mountain Lion installed, you can choose whether you want a notification or not when Should I Sleep takes effect. This notification just states that the app is utilizing its sensors to determine if your computer actually should go to sleep at that moment or not.
![Mac Mac](/uploads/1/2/6/0/126030453/195578968.jpg)
Active2 years, 5 months ago
I have Mac mini with the latest Leopard + all patches. I've set it up for the monitor to go to sleep after 5 minutes of inactivity, but it just won't turn off.
![Program For Mac To Not Go To Sleep Program For Mac To Not Go To Sleep](https://sonru.zendesk.com/hc/en-us/article_attachments/201346112/Power_Mac_2.png)
The trouble started last week after I upgraded the RAM from 1gb to 2gb. Software-wise nothing changed.
Oddly enough, I have the same exact problem on my pc laptop. I suspected that the cat would just jump on the keyboard in the middle of the night and the monitor would wake up. But I locked the cat out of the computer room for the night and the monitor was still on in the morning. The cat denies all knowledge.
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AngryHackerAngryHacker7,6155454 gold badges124124 silver badges182182 bronze badges
3 Answers
I have found similar problems from time to time: it may be a particular process or application which prevents the idle timer from kicking in.
Try quitting programs like VLC, Quicktime Player and the like.
A good test might be to restart the machine, and then see if it will allow the monitor to go to sleep. Then use
ps
or Activity Monitor to see which processes are running.Matthew SchinckelMatthew Schinckel
It's true that Airport could be waking your computer, but then simply unchecking
'Wake for network access'
box should fix this (see SysPref pane view below).You may want to try a few tests like forcing your monitor to sleep by pressing
SHIFT-CTRL-EJECT
together. I have a login prompt screen after moving my mouse, but leaving it 30 seconds should automatically make your monitor sleep.If these tips aren't helping and this seems to be a problem when using with a PC also, perhaps updating your monitor drivers?
Gypsy Spellweaver1,65511 gold badge66 silver badges2121 bronze badges
CannonGodCannonGod
My Mac Will Not Sleep
I've recently found what might be a reason for lots of will-not-stay-asleep issues with OSX.
Apparently, it is to do with Airport (WiFi) being connected:
It almost seems like the AirPort is failing to disengage itself when going into sleep mode. Then when it goes into sleep, the Airport awakens the computer to reestablish the network connection.
(from a discussion here)
And, there is a potential solution. Using Wireless Sleeper can fix the problem under certain circumstances.
I've only just started using it, but hopefully it will solve my issues like this that seem to have re-emerged lately.
Program For Mac To Not Go To Sleep Mode
Matthew SchinckelMatthew Schinckel