No sound on playback, but GUI sounds work

    Downloaded the latest 9.0.1 version and put it onto my NUC 7i3BNK hooked via USB-C to HDMI to my TV (Sony XBR-65X850B), and noticed that while I'm able to get GUI sounds moving around, the second I play a video, all audio stops, and there's no sound from the video. If I stop the file, GUI sounds come back and work fine.

    I tried with several different types of files, have my audio set to defaults aside from selecting the HDMI output in the device list (2.0 channel, optimized, medium, no passthrough)

    I noticed that if i turn my TV off and back on while the video is playing, the audio starts to work again, but once I stop the video and start another, the no-audio issue returns.

    This didn't happen before with the 8.x release, seems to be something different here.

    Anyone else having something similar?

    Quote from chorca

    Downloaded the latest 9.0.1 version and put it onto my NUC 7i3BNK hooked via USB-C to HDMI to my TV (Sony XBR-65X850B), and noticed that while I'm able to get GUI sounds moving around, the second I play a video, all audio stops, and there's no sound from the video. If I stop the file, GUI sounds come back and work fine.

    I tried with several different types of files, have my audio set to defaults aside from selecting the HDMI output in the device list (2.0 channel, optimized, medium, no passthrough)

    I noticed that if i turn my TV off and back on while the video is playing, the audio starts to work again, but once I stop the video and start another, the no-audio issue returns.

    This didn't happen before with the 8.x release, seems to be something different here.

    Anyone else having something similar?

    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

    Still getting this with the latest update, 9.0.2.

    Tried turning passthrough on and off, just a fresh install this happens.

    Anyone else had an issue like this? Basically haven't been able to use Kodi for a couple months due to this issue.

    Dug a little further, completely wiped out and reloaded the system with ArchLinux and installed Kodi via their repo. Messed around, and i'm getting the exact same issue here.

    at 1920x1080, 60hz, i get gui audio

    1920x1080, 30hz, no gui audio

    3840x2160, 30hz, no gui audio

    3840x2160 set via modeline, gui audio, but no video audio.

    It almost seems like the Intel driver is to blame, but i'm not sure it this is just an incompatability with the Sony TV or if it's the driver itself that's having issues here.

    So, looking further into this, I think an issue I'm running into is that the TV is an older type that can do 4k at 60Hz, but it does it at 4:2:0 chroma while using an older HDMI 1.4b chip. This lets it get 4k60 over the older tech, but at a lower chroma sampling.

    Supposedly the intel chips will support this as well, but via a driver patch that was added back in 2017.. However, it appears that it's not being detected properly and this is causing some issues with (initially) getting 4k60 to show up on my resolution list.

    Spent a few hours digging around xrandr and xorg code, but there's no good way I can tell to force the driver into 4:2:0 chroma mode.