这是由于最新的官方Realteck声卡驱动程序自身新特性导致的，而并非系统原因。
This is due to the latest official Realteck sound card driver caused by new features itself, and be not system reason.
为你的声卡安装最新的驱动可以解决这个问题。
To correct this problem you must install the latest audio driver for your sound card.
为你的声卡安装最新的驱动可以解决这个问题。
To correct this problem you must install the latest audio driver for your sound card.
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