A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
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Works now. Installing monodevelop was all I needed to do...
Wait, do we have to install Monodevelop separately?...
I can't start Monodevelop from Unity either. I'm also running Ubuntu 14.04. Installed Unity from unity-editor-5.1.0f3+2015082501_amd64.deb. When...