I have downloaded the latest version of Unity 5.6, and installed on Ubuntu 16.10. When I try to run it, I get a the grey screen. The folder “Packages” was correctly created. As I already had the latest versions of Node.js and npm from Ubuntu repository, I installed the latest versions from PPA as described here: How To Install Node.js on an Ubuntu 14.04 Server | DigitalOcean and still not working. I installed Unity from .deb package and also from .sh file. Always is the same grey window. The permision of the unity3d folder under .local is read and write for me and access for the group.
There’s another solution that is not listed here for making Unity 5.6 work under linux?
Hello @DarkSlash,
I have ran in the same issue with Linux Mint 18.1 just now.
According to mykhani here, https://forum.unity3d.com/threads/unity-5-4b-npm-unable-to-find-missing-packages-on-unity-startup.393541/, i have installed the packages from /opt/Unity/Editor/Data/Resources/Packages as such :
cd ~/.local/share/unity3d/Packages
npm install /opt/Unity/Editor/Data/Resources/Packages/unityeditor-cloud-hub-0.0.15.tgz
npm install /opt/Unity/Editor/Data/Resources/Packages/unityeditor-collab-toolbar.0.6.6.tgz
npm install /opt/Unity/Editor/Data/Resources/Packages/unity-editor-home.0.6.4.tgz
npm install /opt/Unity/Editor/Data/Resources/Packages/unityeditor-collab-history.0.6.4.tgz
This solved the issues for me.
Good luck