Vagrant stuck on 'SSH auth method: private key' about fopnp

[brandon-rhodes]

(I have been preparing for a conference but am done now — so am returning to my GitHub backlog!) When SSH isn't letting you connect to the virtual machine, you may need to bring up the virtual machine console using the GUI in order to see if an error message is displayed telling you what the problem is. Are you able to bring up the VM's console?

[BewareMyPower]

I have just found that my virtualbox can only run a 32-bits guest, and I am sure intel virtualization in BIOS is enabled. I also removed Hyper-V, but it's still not working.

T-x/AMD-V hardware acceleration is not available on your system. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot.

OK, finally I've found where the problem is.
My Ubuntu 16.04 is a guest machine on VMware Workstation, the virtualbox in it doesn't support 64-bits guest (but I don't know why).
Then I try to install virtualbox on my host machine (win10) and succeed to run this playground.
And thanks for your reply, I wouldn't try to solve this problem if it was not for your reply.

[brandon-rhodes]

I'm so glad my reply was helpful, and that you got it to work!