Jul 16, 2018 - And while this list focuses specifically on macOS apps, many of the apps. Make sure your downloads complete before your Mac goes to sleep. Write notes in the text area—and sync them to Dropbox via Unclutter's settings, if you'd like. It's a handy place to keep all your in-progress files and ideas while.
This has been normal behaviour for years. When the Mac sleeps there is no network connectivity. You can put just the display to sleep (ctrl-shift-eject does this). This will turn off the display and conserve power whilst still keeping the Mac turned on and thus the network connection(s). In Snow Leopard they changed this. They introduced a feature called. I've linked to the official Apple support document where you can find more info about this feature like how to set it up and how it works exactly.
Do note the information about Mac notebooks in clamshell mode at the bottom of the page! It says that you need to use it with the poweradapter plugged in. Click to expand.Good info, and I checked into it. My iMac does support this feature.
'Wake for network access' is selected in system (energy) preferences - has been before and after ML upgrade. My wi-fi network is via a 2011 Airport Extreme, and my system profiler (specifically known as 'System Information.app') states 'Wake on wireless:supported.'
However, under ML it just doesn't work- although it did under SL and Lion. The computer goes to sleep after I haven't touched the mouse or keyboard for an hour (as set - the display sleeps after 15 minutes, and I'm no techie but I do know that difference), whether or not it's in the middle of a download or upload. I've been uploading some files for online storage, using Safari, so no worries about '3rd party apps' causing the iMac to misbehave. Prior to ML, my iMac's sleep settings were just the same as they are now. But my iMac wouldn't stop downloads or uploads in progress at the time sleep was supposed to occur per those settings.
And if I left the browser open at bedtime, I would find my fresh emails, notifications, etc., already loaded when I woke up the iMac in the morning. None of that happens now.
I've sent in a bug report on the Apple site. I know, I won't receive a personal reply to that. I don't have time to fuss with any other method of contacting them. I've done both SMC and PRAM resets, checked all settings, read the cited article. It's just not working like they say it's supposed to.
![How To Keep Mac From Losing Internet Connection While Sleeping For Dropbox Upload How To Keep Mac From Losing Internet Connection While Sleeping For Dropbox Upload](http://www.jumpstation.co.uk/flog/images/pyconuk%202014_robot.jpg)
I'll try to live with it, but if it's not fixed I suppose I'll have to live with setting 'computer sleep' to 'never' if I want a download, upload or application task to continue to completion more than an hour after I stand up from my desk. And remember to change the setting back again. About application tasks - having something like a batch file conversion or DVD file ripping job in progress also doesn't prevent the computer from sleeping under ML although it did under all prior OS's. Apparently if there's been no physical touch of keyboard or mouse for an hour, my iMac just doesn't care what's happening, be it download, upload, network activity, or an application process in progress - it's beddybye time. I'm just getting started using Lightroom, and I expect to have to set the sleep time to 'never' unless I want to babysit mass file imports. Basically, I have to literally hold the iMac's 'hand' or set it to never sleep, if I want it to finish lengthy tasks.
![Sleeping Sleeping](/uploads/1/2/5/3/125383633/111963579.png)
I am so so sorry I listened to my expert friends and did this upgrade. I'm having the same problem. My iMac is connected via ethernet (not just a wifi issue - in fact, I don't have this problem with my MBA, which is connected via wifi).
Internet never disconnected on SL or Lion, but now it drops when computer sleeps. I spent at least an hour with apple support over multiple calls trying to find a solution. I'll go ahead and submit a bug report also. This is a significant problem as it makes accessing my iMac remotely impossible, unless I keep the computer awake 24/7. Major flaw in ML.
Glad I'm not the only one though, gives me hope there will be a fix. Just thought I would resurrect this thread to update - after several hours with apple techs and no resolution, my last option was to do a clean install of ML. I was procrastinating on that for a couple weeks. During that time, Time Warner had some issues in my neighborhood, including sporadic service and outages. After they serviced the nodes, my wake on lan problems stopped. I'm not 100% sure that was the issue, but I haven't made any other changes to my iMac and I don't think any ML updates have been pushed to my computer. Curious if anyone else with problems has seen a change.
Sleeping iMAC Since upgrading to ML, my problem is that I share the printer on my wife's iMAC which is located in another part of our property, and when her computer is not 'awake' and being used, I get a message on my iMAC every 30 seconds or so to say that there is a connection error. Cannot find a way to turn this off. Her iMAC energy settings are unchanged since we upgraded from SL and should allow for network access. To keep my iMAC awake when doing long downloads etc, get 'Caffeine' a free app available form the Apple Store.
You can set it to keep your machine awake for specified periods.