I tried many times to install Ubuntu 16.04.1 Mate in an Oracle virtual machine but I can never complete the task. The machine crashes irretrievably. You end up having this strange screen:
The main operating system is debian mate.
Suggestions?
Hello
That looks a lot like what we encountered when we tried to install the OS with no SWAP partition.
If that’s the case for you too, please check yourself as affected on the bug report:
https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1615363
Cheers
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Thank you very much! 
As mentioned in the report, a temporary workaround is to switch to a console (tty1), then back to the graphical environment (tty7) again.
The default host key is Right Ctrl. (This sends a virtual CTRL + ALT)
- Host Key + F1
- Host Key + F7
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