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I have a MacBookPro running OS X 10.8.5.

My understanding is Control ⌃+Shift ⇧+Eject ⏏ puts the Mac into a sleep mode. This is fine but what I want to know if there is a way to keep the ethernet port active while in this mode?

When I come out of this mode, I notice I am signed out of my messaging, disconnected from VM's I have running, etc... The connection comes back right away but I want to prevent the connection disruption.

I was also looking at this answer to "Equivalent of Win-L on Mac" which I really like as well. But again, it turns off the ethernet which I don't want to happen.

  • A connection requires data to be transmitted to keep it open - thus the OSX computer has to be not asleep to do the processing – mmmmmm Jun 27 '14 at 18:42
  • I'm using two different energy saving settings myself: one for running on power supply and one for running on battery. The one running on power supply is set to put screen to rest after a time but hard drives to never go to sleep. I also have the option to put disks to sleep whenever deselected. To add the password lock you go into privacy and activate passcode requirements for sleep/screen saver. – Hoshts Jun 27 '14 at 18:43
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    @Mark Isn't Ctrl-Shift-Eject supposed to only put the display to sleep? The programs etc... are supposed to keep running in the background. Or maybe I misunderstood that. – FGreg Jun 27 '14 at 18:54
  • I understand sleep to mean sleeping the computer and did not consider referring to just the screen. - Given that understanding this is a duplicate – mmmmmm Jun 27 '14 at 18:59
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    @Buscar웃 Correct, I do not have a dial up modem. – FGreg Jun 30 '14 at 14:09
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This is what I do in case of long downloads.

The screen will go to sleep in time set (or when asked)- (5 minutes in my case)

Disable the Put disk to sleep when possible, and set the slider to the right.

Type this in Terminal to keep the connection active

ping -i 60 google.es

This will keep the connection alive.

the 60 is seconds, you do not need more pings then 1 per minute.

the Google.com or Google.es is irrelevant (you chose yours)

Just hit Restore Defaluts after you do not longer need those settings.

To stop terminal Ping hit ctrl-c

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  • Out of curiosity, can you just do ping -i 60 127.0.0.1 instead? Does the address you're pinging every minute have to actually be an external source? – Adam Merrifield Apr 9 '15 at 15:52
  • it comes with Request timeout for icmp_seq 0 – Ruskes Apr 9 '15 at 16:26
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Control+Shift+Power …or… Control+Shift+Eject turns off the monitor without putting the computer in sleep mode.

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You should check out this software called No Sleep. What is does is it keeps your computer awake even if the lid is closed. This is extremely useful if this is what you're looking for.

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  • Wouldn't caffeinate or pmset noidle from the terminal do the same thing? – Duncan Jan 8 '15 at 20:11
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This happens on my iMac running OS X 10.10 So think it's a long standing bug. VLC will keep playing but Google hangouts will drop my call.

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