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I'm using OS X Mavericks (latest) on a 15″ 2014 MBP. There's an option to make the system not lock the screen for x number of seconds/minutes after the screen goes dim. I'm looking for an option to not disconnect the network for x number of seconds/minutes after the screen dims.

Here's the situation (happens a couple times a day): I'm VPN'd in somewhere and have a bunch of SSH and RDP sessions open. I then have to go sit in a meeting where I'd be busy talking to someone or looking at a presentation. I try to keep my screen awake but sometimes I catch it a bit late, often right as it's just going totally dark. When that happens I move the mouse and it wakes up and doesn't ask for a password (since it's only been a few seconds) but my VPN has disconnected and all of my SSH and RDP sessions are killed.

Is there any way to set a grace period for when the network goes down the way you can set a grace period for when the system is locked?

  • would this work for you osxdaily.com/2011/08/08/… – Ruskes Mar 10 '15 at 17:22
  • @Buscar웃 I'm pretty sure it won't because my ssh sessions are set to a pretty short keepalive (60sec) and the RDP sessions have lots of continuous traffic, so there's no problem with connections dropping due to idling (also the wifi connection never drops randomly) but I'll give it a shot – Martin Mar 10 '15 at 18:28
  • how about a script that runs ping till you stop it? – Ruskes Mar 10 '15 at 20:13
  • @Buscar웃 keepalive and continuous ping didn't work. I watched the laptop screen dim while pinging a system behind the vpn, and the instant it went totally dark I moved the mouse but my VPN and RDP sessions already disconnected... – Martin Mar 11 '15 at 13:02
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Yes, you'll use an app like Caffeine and use it's timer or script a watcher to remove Caffeine's power assertion after the time you specify.

You can use the command line peset -g assertionslog to watch the progress of the machine into and away from sleep. You might even be able to use pmset to hard code the behavior you wish after reading the manual page a few times and experimenting with the debug logs it provides.

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