Set Screen Saver to start in 15 minutes and Sleep Mode in 30 minutes. Neither work in Yosemite. Both worked in Mavericks. Any recommendations? Thanks.
iMac, OS X Yosemite (10.10)
Hi, i had the same issue. Only need to dasactivated internet sharing and perfect. Now, i´m finding how to internet sharing using automattor, if is it possible.
Thnaks,
I came across this thread while searching about my iMac not going to sleep with Yosemite installed. I've since discovered that if I unplug my Logitech USB joystick, the computer sleeps normally. It might not be related to your issue, but then again, it may help some others that come across it.
Resolved my problem, thx mate.
This worked for me.
System Preferences>>>Energy Saver>>uncheck "wake for network access."
It appears that "sharing" anything in preferences causes this problem. I had printer sharing turned on, once I shut that off it fixed this issue.
I've tried everything in terms of unchecking anything that's going to share stuff in the background, no apps running, clean startup, PRAM reset and all the classics you can imagine.
HERE'S THE NEW INFO IN THIS THREAD : what was preventing in my case a iMac Retina 27" with OS X Yosemite 10.10.1 to go to sleep automatically is simply the bluetooth MAGIC TRACKPAD. Yep.
Works fine when I shut off the trackpad manually and it works fine with the bluetooth magic mouse, even if I leave that one on.
Same for me, iMac 2010. Nothing mentioned here worked for me 😟 The screen goes to sleep but not the mac itself - I can hear the fans.
Same here.
HD sleeps if I select it but HD will not follow
Screen sleep is fine using hot corners - but left on it's own it doesn't even dim.
I have turned off the Activity Monitor, it works for me
Thanks for the advice - this worked for me, too.
Have tried all of the suggestions and absolutely no difference, it still will not go to sleep.
I had the same issue and my screen saver was the problem. I tested this by setting my screen saver to 1 minute, and the display sleep to a minute after that, and another minute later for computer sleep. Right when the display sleep should've kicked in, all the screen saver did was return to the desktop.
I turned my screen saver to "never," and bumped the display/computer sleep down again to test functionality, and it seems to have fixed the issue.
Hope this helps!
Thank you for the reply. After more web searches, I found the answer on the Apple web site but cannot locate it again. It was caused by a print job that was found to be outstanding and when that was removed/deleted, the Mac went to sleep as normal. So problem solved but thanks again for your suggestions.
I waited until about a three weeks ago to update my iMac (27" i7 mid 2011 model) to Yosemite, expecting that most bugs should have already been corrected by then. Unfortunately, I recently found that my iMac refuses to sleep. It does pretend to sleep or fakes it since the display is off and I hear no noise coming out of the computer, however, when I put my hand in the air vent in the back warm air is being exhausted even when the computer is supposed to be in sleep mode. In the beginning I thought it was normal because I just put it to sleep and CPU or GPU was still hot, but it's definitely not normal after two hours.
I have lost hours trying everything suggested in this thread (creating a new user, disabling sharing, disabling wake up on network activity,... ) , but nothing has worked out for me so far. I feel disappointed about Apple's response to this problem specially because exactly the same system was working fine before the update. Any new suggestions or links to solutions would be greatly appreciated
Thanks a lot!
I have found the web site that helped me. The details are copied & pasted below and in my case it was step 3, the print queue.
Test after each of the following steps:
Step 1
▹ System Preferences ▹ Energy Saver ▹ Power Adapter ▹ Wake for network access: uncheck. You may need to unlock the preference pane by clicking the lock icon in the lower left corner and entering your administrator password.
Step 2
▹ System Preferences ▹ Energy Saver ▹ Schedule… ▹ Start up or wake: uncheck
Step 3
▹ System Preferences ▹ Print & Scan ▹ Open Print Queue...
Check all printers for unfinished jobs. Deal with any you find.
Step 4
Disconnect all wired peripherals except keyboard, mouse or trackball, and monitor, if applicable.
Step 5
Launch the Activity Monitor application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Activity Monitor in the page that opens.
Select All Processes from the menu in the toolbar, if not already selected. Enter “powerd” (without the quotes) in the "Filter" text field. Select the powerd process and click the Quit Process button in the toobar (stop-sign icon.) In the sheet that opens, click Force Quit. You’ll be prompted for your administrator password. The process will be relaunched immediately.
Step 6
Boot in safe mode and log in. The instructions provided by Apple are as follows:
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Safe mode is much slower to boot and run than normal. Don’t launch any applications at first. If sleep still doesn’t work properly, back up all data and reinstall the Mac OS. After that, if you still have the issue, make a “Genius” appointment at an Apple Store to have the machine tested.
If sleep now works as expected, go on to the next step.
Step 7
Still in safe mode, launch the usual set of applications that are running when you have the problem, including your login items, one at a time, testing after each one. Some applications may not work; skip them. You might be able to identify the cause of the problem this way.
Step 8
If sleep is still working after you’ve launched all the usual applications, reboot as usual (not in safe mode) and test again. If sleep still works, you’re done, at least for the moment.
If you still have the sleep issue after booting out of safe mode, post again.
Hope this helps.
iMac won't go into sleep mode in Yosemite
