Intel Alder Lake 2160p @ 23.976 Hz passthrough HD Audio dropouts (i7-1270p/N100)

Quote from smp

Diff

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 9803347..1ada7b4 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1927,7 +1927,7 @@ static bool intel_hdmi_source_bpc_possible(struct intel_display *display, int bp
{
    switch (bpc) {
    case 12:
-        return !HAS_GMCH(display);
+        return !HAS_GMCH(display) && DISPLAY_VER(display) <= 10;
    case 10:
        return DISPLAY_VER(display) >= 11;
    case 8:

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This would apply to kernel 6.16. The change is harmless but I'd rather not merge it to LE, even as a temporary patch.

Making this change for everyone would indeed be too much. But how much work would it be to keep a parallel build going for the intel systems we could use that has this patch? I assume if we switch kernels, porting this patch isn't much work as it's a simple oneliner?

Quote from sky42

After some more help and this time from jernej . Thank you.

I have now a script to fix the audio problem for any LE11/12 without extra binary. The same script works on LE11 or 12.
wget https://raw.githubusercontent.com/sky42src/LibreELEC.tv/11.80.5-240204/projects/Generic/filesystem/usr/bin/intel-gpu-max-10-bit.sh && chmod +x intel-gpu-max-10-bit.sh && ./intel-gpu-max-10-bit.sh

I opened a pull request to make the helper script part of official LE.
https://github.com/LibreELEC/LibreELEC.tv/pull/8588

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Hi all - I've run this script on my N150 based GMKtec NUC and will be testing. However, I ran it when connected to an office PC monitor, and will need to turn the box off to move it down to the theater to test. Are the changes from this script persistant?