Hi,
I switched the receiver fron a Pioneer VSX-1131 towards a Pioneer VSX-LX505 and I am facing now an issue.
Passtrough of Dolby TrueHD 7.1 is not working. The receiver identifes the auto as analogue stereo PCM and only some static noise /white noise is coming. So the stream is not recognised as valdid TrueHD audiostream.
disabling passtrough leads to a working PCM sound.
Passtrough of other sound quality (e.g. Dolby Digital 5.1) is working
Strange: Passtrough of Dolby TrueHD 7.1 is working on the old VSX-1131.
Therefore, I'm a bit annoyed because I don't know where to search the issue: in libreElec/Kodi, on the Hardware of my NUC or on the new Pioneer Reciever
What I already tried out:
- switching the HDMI cable
- getting a TrueHD signal from a BluRay-Player to the Receiver --> worked
do you have some hints, how to proceed for finding the root cause?
🔹 System Details:
- Device: Intel NUC Kit NUC6CAYH - Arches Canyon with Intel Celeron J3455, therefore GPU Mesa Intel HD Graphics 500 (APL2)
- AV Receiver: Pioneer VSX-LX505
- LibreELEC Version: 11.0.3 (kernel: Linux 6.1.38)
- Kodi Version: 20.2 (Nexus)
- Audio Output: HDMI (ALSA)
Out of kodi-log, i do not find somthing strange. do you see some hints?
Code
2025-12-07 12:52:10.042 T:745 info <general>: -----------------------------------------------------------------------
2025-12-07 12:52:10.042 T:745 info <general>: Starting Kodi (20.2 (20.2.0) Git:20.2-Nexus). Platform: Linux x86 64-bit
2025-12-07 12:52:10.042 T:745 info <general>: Using Release Kodi x64
2025-12-07 12:52:10.042 T:745 info <general>: Kodi compiled 2023-07-15 by GCC 12.2.0 for Linux x86 64-bit version 6.1.38 (393510)
2025-12-07 12:52:10.042 T:745 info <general>: Running on LibreELEC (official): 11.0.3, kernel: Linux x86 64-bit version 6.1.38
2025-12-07 12:52:10.042 T:745 info <general>: FFmpeg version/source: 4.4.1-Kodi
2025-12-07 12:52:10.043 T:745 info <general>: Host CPU: Intel(R) Celeron(R) CPU J3455 @ 1.50GHz, 4 cores available
[...]
2025-12-07 13:37:29.217 T:757 debug <general>: CAESinkALSA::InitializeHW - Got: periodSize 9600, bufferSize 38400
2025-12-07 13:37:29.217 T:757 debug <general>: CAESinkALSA::InitializeHW - Setting timeout to 200 ms
2025-12-07 13:37:29.220 T:757 debug <general>: CAESinkALSA::GetChannelLayout - Input Channel Count: 8 Output Channel Count: 8
2025-12-07 13:37:29.220 T:757 debug <general>: CAESinkALSA::GetChannelLayout - Requested Layout: RAW, RAW, RAW, RAW, RAW, RAW, RAW, RAW
2025-12-07 13:37:29.220 T:757 debug <general>: CAESinkALSA::GetChannelLayout - Got Layout: RAW, RAW, RAW, RAW, RAW, RAW, RAW, RAW (ALSA: none)
2025-12-07 13:37:29.221 T:757 debug <general>: CActiveAESink::OpenSink - ALSA Initialized:
2025-12-07 13:37:29.221 T:757 debug <general>: Output Device : HDA Intel PCH
2025-12-07 13:37:29.221 T:757 debug <general>: Sample Rate : 192000
2025-12-07 13:37:29.221 T:757 debug <general>: Sample Format : AE_FMT_S16NE
2025-12-07 13:37:29.221 T:757 debug <general>: Channel Count : 8
2025-12-07 13:37:29.221 T:757 debug <general>: Channel Layout: RAW, RAW, RAW, RAW, RAW, RAW, RAW, RAW
2025-12-07 13:37:29.221 T:757 debug <general>: Frames : 9600
2025-12-07 13:37:29.221 T:757 debug <general>: Frame Size : 16
2025-12-07 13:37:29.229 T:1372 debug <general>: OutputPicture - dropped in output
2025-12-07 13:37:29.240 T:756 debug <general>: CActiveAE::ClearDiscardedBuffers - buffer pool deleted
2025-12-07 13:37:29.244 T:1372 info <general>: Skipped 2 duplicate messages..
2025-12-07 13:37:29.244 T:1372 debug <general>: OutputPicture - dropped in output
2025-12-07 13:37:29.247 T:1369 info <general>: Skipped 1 duplicate messages..
2025-12-07 13:37:29.247 T:1369 debug <general>: CVideoPlayer::HandleMessages - player started 1
2025-12-07 13:37:29.247 T:1365 debug <general>: OnAVChange: CApplication::OnAVChange
2025-12-07 13:37:29.247 T:1372 debug <general>: OutputPicture - dropped in output
2025-12-07 13:37:29.787 T:1372 info <general>: Skipped 59 duplicate messages..
2025-12-07 13:37:29.787 T:1372 debug <general>: CPtsTracker: detected pattern of length 1: 41708.33, frameduration: 41708.333333
2025-12-07 13:37:29.788 T:1372 debug <general>: OutputPicture - dropped in output
2025-12-07 13:37:30.369 T:745 info <general>: Skipped 61 duplicate messages..
2025-12-07 13:37:30.369 T:745 debug <general>: GLES: Requested render method: 0
2025-12-07 13:37:30.369 T:745 info <general>: GLES: Selecting YUV 2 RGB shader
2025-12-07 13:37:30.369 T:745 debug <general>: GLES: using shader format: NV12 red/red/green
2025-12-07 13:37:30.369 T:745 debug <general>: GLES: using tonemap method: reinhard
2025-12-07 13:37:30.370 T:745 debug <general>: GLES: using shader format: NV12 red/red/green
2025-12-07 13:37:30.370 T:745 debug <general>: GLES: using tonemap method: reinhard
2025-12-07 13:37:30.377 T:1369 debug <general>: CVideoPlayer::HandleMessages - player started 2
2025-12-07 13:37:30.377 T:1369 debug <general>: VideoPlayer::Sync - Audio - pts: 300234000.000000, cache: 505375.990847, totalcache: 800000.011921
2025-12-07 13:37:30.377 T:1369 debug <general>: VideoPlayer::Sync - Video - pts: 300049708.333333, cache: 50000.000000, totalcache: 100000.000000
2025-12-07 13:37:30.377 T:1373 debug <general>: CVideoPlayerAudio - CDVDMsg::GENERAL_RESYNC(299728624.009153), level: 100, cache: 514631.462514
2025-12-07 13:37:30.377 T:1373 debug <general>: CDVDAudio::Resume - resume audio stream
2025-12-07 13:37:30.378 T:756 debug <general>: ActiveAE - start sync of audio stream
2025-12-07 13:37:30.378 T:1372 debug <general>: CVideoPlayerVideo - CDVDMsg::GENERAL_RESYNC(299728624.009153)
2025-12-07 13:37:30.379 T:1365 debug <general>: OnAVStarted: CApplication::OnAVStarted
2025-12-07 13:37:30.416 T:745 debug <general>: Activating window ID: 12005
2025-12-07 13:37:30.418 T:745 debug <general>: ------ Window Deinit (MyVideoNav.xml) ------
2025-12-07 13:37:30.420 T:745 debug <general>: FreeVisualisation() done
2025-12-07 13:37:30.422 T:745 debug <general>: ------ Window Init (VideoFullScreen.xml) ------
2025-12-07 13:37:30.425 T:1365 debug <general>: OnAVChange: CApplication::OnAVChange
2025-12-07 13:37:30.447 T:745 debug <general>: ------ Window Deinit (DialogBusy.xml) ------
2025-12-07 13:37:30.512 T:775 debug <general>: [plugin.video.youtube] Get property |play_with|: ''
2025-12-07 13:37:30.512 T:775 debug <general>: [plugin.video.youtube] Clear property |busy|
2025-12-07 13:37:30.512 T:775 debug <general>: [plugin.video.youtube] Pop property |player_json|: ''
2025-12-07 13:37:30.523 T:756 debug <general>: ActiveAE::SyncStream - average error of 41.517041, start adjusting
2025-12-07 13:37:30.523 T:756 debug <general>: ActiveAE::SyncStream - average error 21.517041 below threshold of 30.000000
2025-12-07 13:37:31.911 T:775 debug <general>: [plugin.video.youtube] Clear property |plugin_sleeping|
2025-12-07 13:37:31.911 T:775 debug <general>: [plugin.video.youtube] Set property |plugin_sleeping|: 'true'
2025-12-07 13:37:36.018 T:1372 debug <general>: CPtsTracker: detected pattern of length 1: 41708.33, frameduration: 41708.333333with tese, I got also some edid informations out of the LibreELEC installation. Are these from the connected receiver or are these those which the Intel NUC can do?
cat /sys/class/drm/card0-DP-1/edid > /storage/.kodi/temp/edid.bin
edid-decode /storage/.kodi/temp/edid.bin
Code
Block 0, Base EDID:
EDID Structure Version & Revision: 1.3
Vendor & Product Identification:
Manufacturer: PIO
Model: 5255
Made in: 2021
Basic Display Parameters & Features:
Digital display
Maximum image size: 160 cm x 90 cm
Gamma: 2.20
RGB color display
First detailed timing is the preferred timing
Color Characteristics:
Red : 0.6396, 0.3300
Green: 0.2998, 0.5996
Blue : 0.1503, 0.0595
White: 0.3125, 0.3291
Established Timings I & II:
DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
DMT 0x09: 800x600 60.316541 Hz 4:3 37.879 kHz 40.000000 MHz
DMT 0x10: 1024x768 60.003840 Hz 4:3 48.363 kHz 65.000000 MHz
Standard Timings:
DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
DMT 0x09: 800x600 60.316541 Hz 4:3 37.879 kHz 40.000000 MHz
DMT 0x10: 1024x768 60.003840 Hz 4:3 48.363 kHz 65.000000 MHz
DMT 0x23: 1280x1024 60.019740 Hz 5:4 63.981 kHz 108.000000 MHz
Detailed Timing Descriptors:
DTD 1: 3840x2160 60.000000 Hz 16:9 135.000 kHz 594.000000 MHz (160 0 mm x 900 mm)
Hfront 176 Hsync 88 Hback 296 Hpol P
Vfront 8 Vsync 10 Vback 72 Vpol P
DTD 2: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (160 0 mm x 900 mm)
Hfront 88 Hsync 44 Hback 148 Hpol P
Vfront 4 Vsync 5 Vback 36 Vpol P
Display Product Name: 'AV Receiver'
Display Range Limits:
Monitor ranges (GTF): 58-62 Hz V, 30-136 kHz H, max dotclock 600 MHz
Extension blocks: 1
Checksum: 0x80
----------------
Block 1, CTA-861 Extension Block:
Revision: 3
Underscans IT Video Formats by default
Basic audio support
Supports YCbCr 4:4:4
Supports YCbCr 4:2:2
Native detailed modes: 0
Video Data Block:
VIC 97: 3840x2160 60.000000 Hz 16:9 135.000 kHz 594.000000 MHz
VIC 96: 3840x2160 50.000000 Hz 16:9 112.500 kHz 594.000000 MHz
VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
VIC 31: 1920x1080 50.000000 Hz 16:9 56.250 kHz 148.500000 MHz
VIC 4: 1280x720 60.000000 Hz 16:9 45.000 kHz 74.250000 MHz
VIC 19: 1280x720 50.000000 Hz 16:9 37.500 kHz 74.250000 MHz
VIC 5: 1920x1080i 60.000000 Hz 16:9 33.750 kHz 74.250000 MHz
VIC 20: 1920x1080i 50.000000 Hz 16:9 28.125 kHz 74.250000 MHz
VIC 3: 720x480 59.940060 Hz 16:9 31.469 kHz 27.000000 MHz
VIC 2: 720x480 59.940060 Hz 4:3 31.469 kHz 27.000000 MHz
VIC 18: 720x576 50.000000 Hz 16:9 31.250 kHz 27.000000 MHz
VIC 32: 1920x1080 24.000000 Hz 16:9 27.000 kHz 74.250000 MHz
VIC 33: 1920x1080 25.000000 Hz 16:9 28.125 kHz 74.250000 MHz
VIC 34: 1920x1080 30.000000 Hz 16:9 33.750 kHz 74.250000 MHz
VIC 1: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
VIC 93: 3840x2160 24.000000 Hz 16:9 54.000 kHz 297.000000 MHz
VIC 94: 3840x2160 25.000000 Hz 16:9 56.250 kHz 297.000000 MHz
VIC 95: 3840x2160 30.000000 Hz 16:9 67.500 kHz 297.000000 MHz
VIC 101: 4096x2160 50.000000 Hz 256:135 112.500 kHz 594.000000 MHz
VIC 102: 4096x2160 60.000000 Hz 256:135 135.000 kHz 594.000000 MHz
VIC 98: 4096x2160 24.000000 Hz 256:135 54.000 kHz 297.000000 MHz
VIC 99: 4096x2160 25.000000 Hz 256:135 56.250 kHz 297.000000 MHz
VIC 100: 4096x2160 30.000000 Hz 256:135 67.500 kHz 297.000000 MHz
Audio Data Block:
Linear PCM:
Max channels: 2
Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32
Supported sample sizes (bits): 24 20 16
Linear PCM:
Max channels: 8
Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32
Supported sample sizes (bits): 24 20 16
AC-3:
Max channels: 6
Supported sample rates (kHz): 48 44.1 32
Maximum bit rate: 640 kb/s
DTS:
Max channels: 8
Supported sample rates (kHz): 48 44.1
Maximum bit rate: 1536 kb/s
One Bit Audio:
Max channels: 6
Supported sample rates (kHz): 44.1
Audio Format Code dependent value: 0x00
Enhanced AC-3 (DD+):
Max channels: 8
Supported sample rates (kHz): 48 44.1
Supports Joint Object Coding
Supports Joint Object Coding with ACMOD28
DTS-HD:
Max channels: 8
Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1
Supports DTS:X
Audio Format Code dependent value: 0x03
DTS-HD:
Max channels: 8
Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1
Audio Format Code dependent value: 0x01
MAT (MLP):
Max channels: 8
Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1
Supports Dolby TrueHD, object audio PCM and channel-based PCM
Hash calculation not required for object audio PCM or channel-based PCM
Speaker Allocation Data Block:
FL/FR - Front Left/Right
LFE1 - Low Frequency Effects 1
FC - Front Center
BL/BR - Back Left/Right
RLC/RRC - Rear Left/Right of Center (Deprecated)
FLw/FRw - Front Left/Right Wide
TpFL/TpFR - Top Front Left/Right
Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
Source physical address: 2.4.0.0
Supports_AI
DC_36bit
DC_30bit
DC_Y444
Maximum TMDS clock: 300 MHz
Extended HDMI video details:
3D present
HDMI VICs:
HDMI VIC 1: 3840x2160 30.000000 Hz 16:9 67.500 kHz 297.000000 MHz
HDMI VIC 2: 3840x2160 25.000000 Hz 16:9 56.250 kHz 297.000000 MHz
HDMI VIC 3: 3840x2160 24.000000 Hz 16:9 54.000 kHz 297.000000 MHz
HDMI VIC 4: 4096x2160 24.000000 Hz 256:135 54.000 kHz 297.000000 MHz
Vendor-Specific Data Block (HDMI Forum), OUI C4-5D-D8:
Version: 1
Maximum TMDS Character Rate: 600 MHz
SCDC Present
Supports UHD VIC
Supports 12-bits/component Deep Color 4:2:0 Pixel Encoding
Supports 10-bits/component Deep Color 4:2:0 Pixel Encoding
Colorimetry Data Block:
BT2020YCC
BT2020RGB
Video Capability Data Block:
YCbCr quantization: Selectable (via AVI YQ)
RGB quantization: Selectable (via AVI Q)
PT scan behavior: No Data
IT scan behavior: Supports both over- and underscan
CE scan behavior: Supports both over- and underscan
YCbCr 4:2:0 Capability Map Data Block:
VIC 97: 3840x2160 60.000000 Hz 16:9 135.000 kHz 594.000000 MHz
VIC 96: 3840x2160 50.000000 Hz 16:9 112.500 kHz 594.000000 MHz
VIC 101: 4096x2160 50.000000 Hz 256:135 112.500 kHz 594.000000 MHz
VIC 102: 4096x2160 60.000000 Hz 256:135 135.000 kHz 594.000000 MHz
HDR Static Metadata Data Block:
Electro optical transfer functions:
Traditional gamma - SDR luminance range
SMPTE ST2084
Hybrid Log-Gamma
Supported static metadata descriptors:
Static metadata type 1
Vendor-Specific Video Data Block (Dolby), OUI 00-D0-46:
Version: 1 (12 bytes)
Supports global dimming
DM Version: 3.x
Colorimetry: P3-D65
Low Latency: Only Standard
Target Min Luminance: 0.39680079 cd/m^2
Target Max Luminance: 450 cd/m^2
Unique Rx, Ry: 0.66015625, 0.31640625
Unique Gx, Gy: 0.28906250, 0.65234375
Unique Bx, By: 0.15234375, 0.03906250
Vendor-Specific Audio Data Block (Dolby), OUI 00-D0-46:
Version: 1 (7 bytes)
Height speaker zone present
Surround speaker zone present
Center speaker zone present