My solution turned out to be none of the above exactly. I'm running Ubuntu 14 as guest inside a Windows 7 host. I had been running this vagrant box fine, but I started it up again after not using it for a couple of months, and it kept coming up with the SSH connection timeout. It turned out that somehow the key pair didn't work - so I copied the Vagrant public key into Ubuntu according to the instructions on this page. But that wasn't all. I then discovered that the private key in my base box was different than the private key here. Putting this private key in as the vagrant_private_key file in C:\Users\your-user.vagrant.d\boxes\vagrant-box-name\nnnnnnnn\virtualbox after placing the public key into Ubuntu fixed the problem.

在我的情况下，给它一个静态IP地址，简单地解决了问题:

Config.vm.network "private_network"， ip: "192.168.50.50"

对我有帮助的是在BIOS中启用虚拟化，因为机器无法启动。

当我杀死腻子过程时，我解决了这个问题。因为我同时运行了git-ssh和putty。他们似乎在争夺ssh访问权。一个就够了。

在Homestead.yaml上寻找这条线:

config.vm.network "forwarded_port", guest: 80, host: 8080

并更改为:

config.vm.network "forwarded_port", guest: 80, host: 8000

然后在Homestead目录下运行:

vagrant destroy
vagrant up

看看它是否有效。

ubuntu/ bioni64遇到类似的问题

通过启用Vagrantfile中的gui，我可以使用默认的vagrant/vagrant登录

config.vm.provider "virtualbox" do |vb|
   vb.gui = true
end  

然后执行如下命令复位防火墙

$ ufw force --reset  

然后重新启动系统，这次没有UI 能顺利启动吗

在进行重置之前，请确保保留防火墙规则的备份