我需要在我的服务器中运行 Firefox 才能从 Hudson 执行一些 Selenium 测试。我不希望必须安装完整的 gui。所以我安装了 Xvfb 以伪造 Gui（如果我的假设错误，我会以这种方式纠正我）。
经过一段时间的尝试后，我遇到了下一种情况：
$ sudo Xvfb -ac :99 &
[dix] Could not init font path element /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, removing from list!
(EE) config/hal: NewInputDeviceRequest failed (2)
(EE) config/hal: NewInputDeviceRequest failed (2)
(EE) config/hal: NewInputDeviceRequest failed (2)
(EE) config/hal: NewInputDeviceRequest failed (2)
(EE) config/hal: NewInputDeviceRequest failed (2)
$ firefox
[dix] Could not init font path element /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, removing from list!
[config/dbus] couldn't register object path
(EE) config/hal: NewInputDeviceRequest failed (2)
(EE) config/hal: NewInputDeviceRequest …