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<span style="color:#0066CC;">card 1: rockchiphdmi0 [rockchip-hdmi0], device 0: rockchip-hdmi0 i2s-hifi-0 [rockchip-hdmi0 i2s-hifi-0] Subdevices: 1/1</span><br>
<span style="color:#0066CC;">Subdevice #0: subdevice #0</span><br>
card 2: rockchipes8388 [rockchip-es8388], device 0: dailink-multicodecs ES8323.6-0010-0 [dailink-multicodecs ES8323.6-0010-0]<br>Subdevices: 1/1<br>Subdevice #0: subdevice #0<br>
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3) Then use the aplay command to play the audio file that comes with the system. If the HDMI monitor or TV can hear the sound, it means that the hardware can be used normally<br>
