No hdmi audio selection on acer AIO pc

thesorcerer1981 · September 23, 2023 at 7:57 PM

Greetings,

Have been searching for a solution but can't find it. The problem is that my acer Z1-621 AIO doesn't display an hdmi output under system settings>audio (expert). I have tried both versions of libreelec, hoping it was a kernel issue. The cpu is a Intel Pentium N3530 with Intel HD graphics. Different hdmi high speed cables and ports on the receiver did resolve the problem either.

Thank you in advance!

thesorcerer1981 · September 23, 2023 at 8:45 PM

Messing around with ssh and putty learned me that there is no alsa or alsamixer installed.. How are sound devices configured via terminal?

**Da Flex** · September 23, 2023 at 8:52 PM

Please provide a full debug log.

How to post a log (wiki)

1. Enable debugging in Settings>System Settings>Logging
2. Restart Kodi
3. Replicate the problem
4. Generate a log URL (do not post/upload logs to the forum)

use "Settings > LibreELEC > System > Paste system logs" or run "pastekodi" over SSH, then post the URL link

thesorcerer1981 · September 24, 2023 at 9:20 AM

Link to log:

https://ix.io/4Hhw

**chewitt** · September 24, 2023 at 11:01 AM

Code

2023-09-24 06:20:36.613 T:1937285696  NOTICE: Using Release Kodi x32 build (version for Raspberry Pi)

Changing that URL to HTTP (as ix.io does not use HTTPS) shows ^ which definitely didn't come from an Acer PC

thesorcerer1981 · September 24, 2023 at 2:28 PM

second attempt:

http://ix.io/4Hjh

Thank you in advance.

thesorcerer1981 · September 28, 2023 at 5:48 PM

Code

2023-09-24 13:25:44.786 T:701      info <general>: Enumerated ALSA devices:
2023-09-24 13:25:44.786 T:701      info <general>:     Device 1
2023-09-24 13:25:44.786 T:701      info <general>:         m_deviceName      : @
2023-09-24 13:25:44.786 T:701      info <general>:         m_displayName     : Default (HDA Intel PCH ALC290 Analog)
2023-09-24 13:25:44.786 T:701      info <general>:         m_displayNameExtra: 
2023-09-24 13:25:44.786 T:701      info <general>:         m_deviceType      : AE_DEVTYPE_PCM
2023-09-24 13:25:44.786 T:701      info <general>:         m_channels        : FL, FR
2023-09-24 13:25:44.786 T:701      info <general>:         m_sampleRates     : 48000
2023-09-24 13:25:44.786 T:701      info <general>:         m_dataFormats     : AE_FMT_S32NE
2023-09-24 13:25:44.786 T:701      info <general>:         m_streamTypes     : No passthrough capabilities

So the Intel chip doesn't support passthrough or is it a software problem?

**chewitt** · September 28, 2023 at 6:34 PM

Passthrough of a digital signal requires a digital output (HDMI or S/PDIF). That's an an Analogue output.

thesorcerer1981 · September 30, 2023 at 8:55 PM

Quote from chewitt

Passthrough of a digital signal requires a digital output (HDMI or S/PDIF). That's an an Analogue output.

Overlooked the analog part. Pasted the wrong part of the log file. Found this however:

Quote

Code

========== kmsprint ==========
Connector 0 (73) VGA-1 (disconnected)  Encoder 0 (74) DAC
Connector 1 (76) DP-1 (disconnected)  Encoder 1 (75) TMDS
Connector 2 (83) HDMI-A-1 (connected)  Encoder 2 (82) TMDS    Crtc 0 (51) 1920x1080@60.00 148.500 1920/88/44/148/+ 1080/4/5/36/+ 60 (60.00) P|D       Plane 0 (31) fb-id: 89 (crtcs: 0) 0,0 1920x1080 -> 0,0 1920x1080 (C8   RG16 XR24 XB24 AR24 AB24 XR30 XB30 AR30 AB30 XB4H)        FB 89 1920x1080 XR30

thesorcerer1981 · September 30, 2023 at 8:58 PM

And this:

Code

2023-09-24 13:25:44.783 T:701   warning <general>: Pulseaudio module module-allow-passthrough not loaded - opening PT devices might fail

Indeed no passthrough devices show up in audio system settings kodi gui. Why won't the module load?

**chewitt** · September 30, 2023 at 9:13 PM

That warning is harmless and irrelevant because LE only uses pulseaudio for BT connections and everything else is native alsa. HDMI cardsnormaly have several card presentations to the OS including an analogue one; which will never support pass-through. Put Kodi in debug mode, restart, than "pastekodi" the entire logfile and share the URL; little snippets are rarely useful.

thesorcerer1981 · October 1, 2023 at 12:57 PM

Quote from thesorcerer1981

second attempt:
http://ix.io/4Hjh
Thank you in advance.

Already did earlier.