Q: El Capitan Not Allowing Mac To Sleep

I had the very same problem and yesterday I have done some experiments. For me it seemed that WiFi problems cause the issue. Can you check if this is the same for you?

See details here

How I did this is to leave the lid closed for 5 min, then checked the belly of the device if it was "aluminum cold" or little bit warmer than that -- you know, if you leave an aluminum plate on the table that gets cold real quick as it dissipate heat really well.

For double check I have run Console utility (just type Console on the Spotlight Search) and there are loads of system generated log messages with second precise time stamps. When it is sleeping there should be no messages for that time being...

Could be, yes. Worse case MacOS will dump your entire memory to disk and turns off the computer, then when you plug it in and turn it on it loads everything back from the disk. That takes longer but at least your work is safe.

Anyways, let me know if it was the WiFi for you too or something else that prevents your Mac to sleep. Btw you may can see repetative messages in that log from 8pm to 11:45pm and that can be also an indicator what was going on.

I had the same issue.  My 2010 Macbook became so hot it heated books in my bag!  My LCD got so hot it has some heat damage.  Thanks Apple HQ...or maybe this was the plan?

That does not sound good. Did you talk to the Apple Customer Care or the Genius Bar at Apple Store about it and what do they offer?

Have the same issue, pulled up Console and there is a "wake" sequence every 2 minutes. It never has a reason but the camera, bluetooth, and wifi seem to ping it awake based on the whole list. (See pic for the Wake reason: ?) ... anyways, worst bug ever. The worst.

I did turn off Wifi before this and it seemed to work. So until they get a patch based on this thread and another, it seems that turning off wifi will do the trick.

Has anyone tried to force sleep from the apple menu?

I'm seeing similar results as you, with same core issues. In my case, it seems my battery is draining quicker than what you guys have stated, with my battery going 55% down to 7% in just two hours. Also, not sure if anyone else noticed this, but I had to cycle my wifi when I opened the lid before I was able to get any internet.

I'll attach my full log in case anyone wants to look at 2 hours of the problem via console logs – https://www.dropbox.com/s/5je5ciyw9eaeskk/Should%20be%20Sleeping.log?dl=0

Has anyone tried to force sleep from the apple menu?

I did try this, and it appears to work for at least 3 minutes, but I didn't test it much longer than that. I will take into advisement the workaround of turning off Wifi, for now.

System Overview:

OS X El Capitan

Version 10.11

MacBook Pro (Retina, 15-inch, Mid 2015)

Processor 2.8 GHz Intel Core i7

Memory 16 GB 1600 MHz DDR3

Graphics AMD Radeon R9 M370X 2048 MB

I have a 2009 iMac i7. Updated from Snow Leopard to Yosemite (big leap) and since then the Mac refuses to sleep. Activity Monitor finds no process interfering with sleep. Today updated to El Capitan and the problem persists. I am getting seriously frustrated about this

I have the Mid 2015 Macbook Pro 15 inch with the same issue.

Last night I put my computer to sleep at 5pm, with 50% battery left. When I got to work this morning my battery was completely dead. Looking at my console utility, it appears my macbook died around 9:45pm, which means it didn't even sleep for 5 hours :/

After looking into it - it appears google chrome was the reason my battery died. I found it within Activity Monitor < Energy. It was the only program underneath "Preventing Sleep" that was labeled "Yes".

For the last few days I've been quitting Chrome before I put my mac to sleep and the battery level holds!

Hi trudnai,

Thanks for the suggestion of looking at the WiFi. I had the same 'No Sleep' issue but after seeing your post and then reading this article:

OS X El Capitan: If your Mac won’t go to or stay in sleep

I discovered that it was internet sharing (from WiFi) that was preventing the computer from sleeping. There was no actual sharing going on but the box was ticked and when I disabled it, the Mac slept as it should even with WiFI on.

Thanks again for pointing me in the right direction.

Cheers

Solved my sleep problem! After trying all the suggestions others have suggested I simply resigned to the fact I would most likely have to live without the sleep function. Then I downloaded Onyx 3.1.2 for El Capitan (it's free) and under Maintenance –> Rebuilding executed the command to rebuild the ‘LaunchServices’, ‘dyld’s shared cache’ and ‘XPC cache’. Rebooted and now sleep works again!