Thanks for your answer. I tried your option but without result. I do get
now other problems which already logged.
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https://bugs.launchpad.net/bugs/1566013
Title:
install unity8
To mana
Public bug reported:
Get a lot of errors during the Install process om my lenovo x220 - i7
Base OS was a fresh installed 16.04 64 beta1
updated first with sudo apt-get update
then followed te procedure of the website:
http://www.omgubuntu.co.uk/2016/04/ubuntu-16-04-unity-8-desktop-progress-video