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Screen Sharing Useless on Headless Mac Pro early 08 running OS X 10.8 Mountain Lion

I used to use screen sharing to connect to my headless (no monitor) mac pro early 2008 running Lion from my early 2009 Mac Book Pro 17" also running Lion. I had them connection view internet sharing over an ethernet cable. There was no lag, I could eaisly use program and even watch video.

After upgrading both to Mountain Lion now screen sharing is usless. Apps are slow, mouse movements do not track well and forget about video, it doesn't even render.

I did notice something interesting, if i do connect a monitor to the headless mac pro the issues go away. Everything runs smooth like it used to headless on 10.7 until i disconnect the monitor, then back to slow town.

Any ideas? I'm getting close to reinstalling 10.7 as 8 is useless to me at this point.

Mac Pro, OS X Mountain Lion (10.8.1), Screen Sharing Mountain Lion Slow

Posted on Sep 1, 2012 12:45 PM

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Posted on Sep 1, 2012 6:08 PM

Same issue being discussed here: https://discussions.apple.com/thread/4151334


I find I have to connect a keyboard and turn on the TV the Mac Mini is connected to before it comes right.


Also contemplating downgrading the Mac Mini to Lion as it's a giant pain in the a**!

5 replies

Apr 30, 2016 6:59 PM in response to mytoenailcameoff

This still on-going bug two years later in OSX is not likely to be fixed the two not great work arounds are:

1. Make a build a faked dongle to trick OSX to by pass this bug.
http://apple.stackexchange.com/questions/152354/screensharing-slow-even-over-gig abit-ethernet


2. Turn off OSX screen sharing and install your own VNC server

http://www.tightvnc.com/

https://www.realvnc.com/download/


I have also seen some people resolve this by buying OSX Server ( $20 ) from the app store.

Screen Sharing Useless on Headless Mac Pro early 08 running OS X 10.8 Mountain Lion

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