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I have just installed Elementary OS Freya. I was using Ubuntu 15.10 with Gnome before this. Synergy was working just fine with that.

But now I since I have installed the .deb file Synergy crashes with the message System tray is unavailable, quitting . Please help me. Synergy is very important for me. I share my mouse + keyboard with Macbook and Linux laptop

marked as duplicate by Daniel Foré, Lewis Goddard Feb 3 '16 at 1:44

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The problem is in a missinig package: sni-qt

sudo apt-get install sni-qt

after that command it works. Reference: https://github.com/synergy/synergy/issues/4774

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