Code
2022-12-29 11:28:54.444 T:758 info <general>: Device 3
2022-12-29 11:28:54.445 T:758 info <general>: m_deviceName : hdmi:CARD=PCH,DEV=0
2022-12-29 11:28:54.445 T:758 info <general>: m_displayName : HDA Intel PCH
2022-12-29 11:28:54.445 T:758 info <general>: m_displayNameExtra: SAM SAMSUNG on DisplayPort #0
2022-12-29 11:28:54.445 T:758 info <general>: m_deviceType : AE_DEVTYPE_HDMI
2022-12-29 11:28:54.445 T:758 info <general>: m_channels : FL, FR, LFE, FC, BL, BR, BC, BLOC, BROC
2022-12-29 11:28:54.445 T:758 info <general>: m_sampleRates : 32000,44100,48000,88200,96000,176400,192000
2022-12-29 11:28:54.445 T:758 info <general>: m_dataFormats : AE_FMT_RAW,AE_FMT_S32NE,AE_FMT_S16NE,AE_FMT_S16LE,AE_FMT_RAW
2022-12-29 11:28:54.445 T:758 info <general>: 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
^ This shows the TV (or presumably the AVR passing through the TVs EDID) connected to "hdmi:CARD=PCH,DEV=0" .. while:
Code
2022-12-29 11:29:35.322 T:759 info <general>: CActiveAESink::OpenSink - initialize sink
2022-12-29 11:29:35.322 T:759 debug <general>: CActiveAESink::OpenSink - trying to open device ALSA:hdmi:CARD=PCH,DEV=1
2022-12-29 11:29:35.322 T:759 info <general>: CAESinkALSA::Initialize - Attempting to open device "hdmi:CARD=PCH,DEV=1"
2022-12-29 11:29:35.331 T:759 info <general>: CAESinkALSA::Initialize - Opened device "hdmi:CARD=PCH,DEV=1,AES0=0x04,AES1=0x82,AES2=0x00,AES3=0x00"
2022-12-29 11:29:35.331 T:759 info <general>: CAESinkALSA::InitializeHW - Your hardware does not support AE_FMT_FLOAT, trying other formats
2022-12-29 11:29:35.331 T:759 info <general>: CAESinkALSA::InitializeHW - Using data format AE_FMT_S32NE
2022-12-29 11:29:35.331 T:759 debug <general>: CAESinkALSA::InitializeHW - Request: periodSize 2205, bufferSize 8820
2022-12-29 11:29:35.342 T:759 debug <general>: CAESinkALSA::InitializeHW - Got: periodSize 2205, bufferSize 8820
2022-12-29 11:29:35.342 T:759 debug <general>: CAESinkALSA::InitializeHW - Setting timeout to 200 ms
2022-12-29 11:29:35.342 T:759 debug <general>: CAESinkALSA::GetChannelLayout - Input Channel Count: 2 Output Channel Count: 2
2022-12-29 11:29:35.342 T:759 debug <general>: CAESinkALSA::GetChannelLayout - Requested Layout: FL, FR
2022-12-29 11:29:35.342 T:759 debug <general>: CAESinkALSA::GetChannelLayout - Got Layout: UNKNOWN1, UNKNOWN1 (ALSA: UNKNOWN UNKNOWN)
Display More
^ This shows the Kodi output device is "hdmi:CARD=PCH,DEV=1" which is not connected to anything that provides EDID info to define what the output is capable of, so Kodi falls back to 2-channel audio. TL/DR; select the DP output in the GUI (should have 'SAMSUNG' in the name) and you should get multi-channel audio.
LE images using GBM don't support screenshots due to changes in the video pipeline; this is known and not a bug.