就我个人而言，Tunnelblick VPN软件阻断了连接。现在当我启动新的虚拟机时，我临时禁用Tunnelblick。

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。

在我从Vagrantfile中删除这一行后，我也遇到了同样的问题:

config.vm.network "private_network", type: "dhcp"

我把这行放回去后，VM加载正常。

对我有帮助的是在BIOS中启用虚拟化，因为机器无法启动。

需要反复检查的一件事是，您的计算机BIOS中是否启用了硬件虚拟化。

我的问题是相同的超时字符串，但我只能在GUI中看到黑屏。

我刚刚安装的一台笔记本电脑一直显示同样的问题。经过几个小时的搜索，我终于找到了一个提示，看看BIOS是否启用了硬件虚拟化。

以下是我找到的帖子内容:

我发现仍然有一些用户遇到了这个问题。因此，我将尝试在下面总结一些可能的解决SSH超时问题的方法:

Make sure your firewall or antivirus is not blocking the program (which I doubt will happen often) Give your vagrant machine some time for timeouts to happen. If you dont have a very fast PC / Mac, the VM will take while to boot into an SSH ready state, so timeouts will happen. Therefore, first try to let vagrant timeout COMPLETELY before concluding that there is a fault. If vagrant times out completely then increase the timeout limit in the vagrant file to a few min and try again. If that still doesnt work, then try to clean boot your vagrant machine through the VirtualBox interface and enable the GUI of the machine beforehand. If the GUI doesn't show anything happening (ie. just blackscreen, no text) while it is booting, then your vagrant machine has got problems. Destroy the entire machine through the VB interface and reinstall. Delete the ubuntu image files in the Vagrant Images folder in the user folder and redownload and install. Do you even have an intel processor that supports 64bit hardware virtualisation? Google it. If you do, make sure there is no setting in your Bios disabling this feature. Disable hyper-v feature if you are running windows 7 or 8. Google how to disable. Make sure you are running through an SSH enabled client. Use Git bash. Download: http://git-scm.com/downloads Install a 32bit version of ubuntu like trusty32 or precise32. Just change the version in the vagrant file and reinstall vagrant in new directory. Make sure you are using the latest vagrant and virtualbox versions. Last resorts: Format your computer, reinstall windows and buy an intel core isomething processor.

希望这能有所帮助。

将ubuntu32位安装到AMD64位上就成功了。我无法访问BIOs，因为它是一个受限制的环境，但我仍然能够让它与ubuntu/trusty32而不是ubuntu/trusty64一起工作

在Windows 7 SP1上使用Vagrant 1.6.3和VirtualBox 4.3.15

希望这能有所帮助。