1. 问题：d-bus 在 dbus-daemon 没有运行起来的环境中会报这个错：
connectToBus() Connection Error(Using X11 for dbus-daemon autolaunch was disabled at compile time, set your DBUS_SESSION_BUS_ADDRESS instead
2. 解决方法：
在运行程序之前，先执行这个命令，把dbus-daemon 先运行起来
$ export $(dbus-launch)
3. 网上的解决方法详细说明过程
原文解决办法链接
When I tried to run notify-send on my laptop running Gentoo, it didn’t work and was given the following message:
$ notify-send ‘hello’
Connecting to D-Bus failed: Using X11 for dbus-daemons autolaunch was disabled at compile time, set your DBUS_SESSION_BUS_ADDRESS instead
How do one set DBUS_SESSION_BUS_ADDRESS? Accoridng to this, it can be done by running:
$ export $(dbus-launch)
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