Vagrant up 失败遇到的问题

homestead-7: Waiting for machine to boot. This may take a few minutes...
homestead-7: SSH address: 127.0.0.1:2222
homestead-7: SSH username: vagrant
homestead-7: SSH auth method: private key
    每一次就到这里就会报 Timed out 然后我修改了 config.vm.boot_timeout 还是不行 最后 --debug 显示错误信息
        ERROR vagrant: /opt/vagrant/embedded/gems/gems/vagrant
        1.9.1/lib/vagrant/action/builtin/wait_for_communicator.rb:62:in `call'
        /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/action/warden.rb:34:in `call'
    /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/plugins/providers/virtualbox/action/customize.rb:40:in `call'
    /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/action/warden.rb:34:in `call'
    实在是找不到原因求解