我是这样解决的:找到“'设置'应用程序”->系统->声音->所有声音设备->输入设备->你的耳机->常规->音频,此项更改为不允许;
等一会耳机会自动从handsfree模式切换至stereo模式,代价是你不能用耳机自带的麦克风了。
My computer is running server so i can't trans its language into English now. So I google translated it, maybe different from system text:
This is how I solved it: Find the "'Settings' application"->System->Sound->All sound devices->Input devices->Your headphones->General->Audio, change this to not allowed.
After a while, the headset will automatically switch from handsfree mode to stereo mode. The price is that you cannot use the microphone that comes with the headset.