How to Keep Your Mac From Going to Sleep | Techwalla
iMac Intel 27" EMC 2309 (Late 2009, Core 2 Duo 3.06 or 3.33 GHz) ID iMac10,1, EMC 2374 (Late 2009, Core i5 2.66 GHz or Core i7 2.8 GHz) ID iMac11,1 497 Questions View all scott How to tackle waking a stubbornly sleeping Mac - CNET How to tackle waking a stubbornly sleeping Mac. If your Mac takes a long time to wake from sleep and seems to require a reset when it does, here are a few things to try. How to stop MacBook from sleeping when lid is closed in I don't know why people always say this, it's factually inaccurate. Apple supports clamshell mode just fine — IE when you plug the computer into an external monitor and close the MacBook lid so that only the screen on the external display is in use — and if there was any validity to the argument that you'd damage the computer shutting the lid they, themselves, would say not to do it. People with WesternDigital HDD sleep problem | GBAtemp.net Sep 30, 2012
If your Mac doesn’t wake up, click again and again on Trackpad. Solution 1: Wake up your Mac. Just press the Power Button to wake up your Mac from sleep. If it doesn’t work out, press and hold the Power Button until your Mac wakes up. Solution 2: Change sleep timer for Computer and display. Go to Apple Menu->System Preferences->Energy Saver.
Prevent iMac from sleeping, for VPN login? (3 answers) Closed 5 years ago. In settings, I don't see a way to stop the PC from going to sleep. To temporarily stop your Mac from sleeping, you could use Caffeine, a widely-used, free utility available both through the App Store as well as a direct download from the developer's site.
If your Mac doesn't sleep or wake when expected - Apple
External hard drive ejects on sleep | MacRumors Forums Oct 14, 2012 Tech Tip: Should You Shut Down Your Mac or Let It Sleep? Put that iMac to sleep, and it uses only 1.22 W of power. Turning the Mac all the way off, but keeping it plugged in, power use goes down to 0.24W. The difference in power consumption between sleeping the Mac and turning it off is only .98 W, meaning that over a year, I’m using an additional 5.7 kWh (kilowatt hours) of power (assuming I itunes - How do I prevent my iMac from sleeping while My iMac falls to sleep when I walk away for a while. Even when the system should be busy with downloading files and converting videos. Either way, you can still let the display sleep to save power and the computer will look like it's sleeping. Specific to AppleTV streaming, there appears to be a bug in iTunes 11. Here's an Open Radar bug How to prevent sleep in OS X - CNET