统信桌面操作系统专业版V20（1070）
Linux uos 5.10.97-arm64-desktop
uos基础 alsactl 实时检查音频设备的接入
启动命令之后，我将耳机接头插入一次，拔出一次所得到的日志如下
code@uos:~$ alsactl monitor
node hw:0, #4 (0,0,0,Rear HeadPhone Jack,0) VALUE
node hw:0, #1 (0,0,0,Headset Mic Jack,0) VALUE
node hw:0, #2 (0,0,0,Headphone Jack,0) VALUE
node hw:0, #41 (2,0,0,Headset Playback Switch,0) VALUE
node hw:0, #45 (2,0,0,Rear Headphone Playback Switch,0) VALUE
node hw:0, #4 (0,0,0,Rear HeadPhone Jack,0) VALUE
node hw:0, #1 (0,0,0,Headset Mic Jack,0) VALUE
node hw:0, #2 (0,0,0,Headphone Jack,0) VALUE
node hw:0, #45 (2,0,0,Rear Headphone Playback Switch,0) VALUE
node hw:0, #41 (2,0,0,Headset Playback Switch,0) VALUE
