Seems like your Mini PC uses DisplayPort protocol internally:
Code
Device 4
m_deviceName : hdmi:CARD=PCH,DEV=0
m_displayName : HDA Intel PCH
m_displayNameExtra: SAM SAMSUNG on DisplayPort #0
m_deviceType : AE_DEVTYPE_HDMI
m_channels : FL, FR, LFE, FC, BL, BR, BC, BLOC, BROC
m_sampleRates : 32000,44100,48000,88200,96000,176400,192000
m_dataFormats : AE_FMT_RAW,AE_FMT_S32NE,AE_FMT_S16NE,AE_FMT_S16LE,AE_FMT_RAW
m_streamTypes : STREAM_TYPE_AC3,STREAM_TYPE_DTSHD,STREAM_TYPE_DTSHD_MA,STREAM_TYPE_DTSHD_CORE,STREAM_TYPE_DTS_1024,STREAM_TYPE_DTS_2048,STREAM_TYPE_DTS_512,STREAM_TYPE_EAC3,STREAM_TYPE_TRUEHD
It's very likely a DisplayPort issue, which we can't solve. The log looks good (no audio errors).
- Make sure your graphics card driver is up-to-date (might requires Windows). Those drivers also manage DisplayPort.
- In case your graphics card driver is up-to-date, but the issue persists, use S/PDIF for audio.