!!!! – I end up with LibreElec on PC, this is the config for HDMI output of lenovo T570:
//get DRM ls /sys/class/drm //check DRM status: LibreELEC:/etc # tail /sys/class/drm/*/status ==> /sys/class/drm/card0-DP-1/status <== disconnected ==> /sys/class/drm/card0-DP-2/status <== disconnected ==> /sys/class/drm/card0-HDMI-A-1/status <== disconnected ==> /sys/class/drm/card0-HDMI-A-2/status <== connected ==> /sys/class/drm/card0-eDP-1/status <== disconnected LibreELEC:/etc # getedid gpu //edit syslinux.cfg LibreELEC:/etc # mount -o remount,rw /flash LibreELEC:/etc # nano /flash/syslinux.cfg ====================== LABEL live KERNEL /KERNEL APPEND boot=UUID=1901-3952 live quiet vga=current LABEL run KERNEL /KERNEL APPEND boot=UUID=1901-3952 disk=UUID=279513d9-e3fe-4b07-8121-a6530f2ab377 portable quiet video=HDMI-A-2:1920x1080M@60 video=eDP-1:d
Android TV Box Surround sound enable : No succes :-/
Sources I tried
https://www.reddit.com/r/AndroidTV/comments/xcnq5z/missing_manual_surround_sound_setting_in_km7_and/
Long story short, did some testing, and with a few ADB shell script commands you too can unhide the MANUAL SurroundSound setting’s UI toggles in the MECOOL KM7 and probably other ATV11 devices as well.
!!!! First, inside the DISPLAY_&_SOUND settings under ADVANCED_SOUND_SETTINGS option turn-OFF the S/PDIF output, and note the Formats is either “Automatic” or “None” – and after you input the script cmds neither option will be chosen.
All works well in passthrough including kodi, netflix, amazon prime and apple tv but when I restart all is lost
so I am using tvQuickAction to send ADB Shell commands: settings put global digital_audio_format 2 settings put global encoded_surround_output 3
You can also use adb on boot apk (https://xdaforums.com/t/app-no-root-adb-on-boot-run-adb-commands-at-boot-automatically.4368281/)
write exactly this to the apk:
sleep 20; settings put global digital_audio_format 2; settings put global encoded_surround_output 3
Source: https://www.reddit.com/r/Homatics/comments/11wnu9a/homatics_driver_and_sound_issue/
settings put global digital_audio_format 2 settings put global encoded_surround_output 3 //ADB Shell cmds to manually input Surround Sound ENABLED_FORMATS: settings put global digital_audio_subformat "5,6,7,18" settings put global digital_audio_subformat "5,6,7,18" settings put global encoded_surround_output_enabled_formats "5,6,7,18"
DIGITAL and ENCODED formats must have the same Format variables:
- AC3 (DD) = 5
- E_AC3 (DD+) = 6
- DTS = 7
- DTS_HD = 8
- DOLBY_TRUEHD = 14
- E_AC3_JOC (DD+Atmos) =18
- There are way more ENCODED audio codecs in ANDROID’s main source-code that can be sent via passthrough, but they need to have a corresponding DIGITAL entry in Amlogic’s source-code to work with an Amlogic SoC. But they are just not all populated in Amlogic’s JAVA. But personally, I believe the real reason that HD-Audio codecs can’t be sent via passthrough is Amlogic’s Linux Kernel is still broken for Android 11, but there is hope that it might be fixed for Android 12.
After entering the above ADB cmds, I recommend doing a device REBOOT, and checking that the settings persisted by connecting ADB again and scrolling through the GLOBAL settings list.
NOTE:
I have NOT tested these Audio settings extensively with every streaming app available, I tested with Amazon PrimeVideo and DolbyAtmos worked and was sent via Passthrough, so was happy and deemed my mini exploit a success.
Don’t have a Netflix sub personally, also KM7 not Netflix certified, but if somebody with the Realme 4K stick wanted to try inputting these settings with ADB, Netflix may still not passthrough ATMOS unless inputting two further ADB settings:
settings put global nrdp_external_surround_sound_enabled 1 settings put global external_surround_sound_enabled 1
https://forum.kodi.tv/showthread.php?pid=2862271
adb shell settings put global digital_sound 1 adb shell settings put global encoded_surround_output 2
encoded_surround_output 0 = auto (random behavior)
encoded_surround_output 1 = pcm
encoded_surround_output 2 = always
!!!! ???? AMLogic Android devices running Oreo v8.1 or greater no longer has IEC61937 Kodi HD audio passthrough support in Firmware.
No idea why it was taken out.
https://www.reddit.com/r/AndroidTV/comments/yrgjoh/android_tv_10_and_51_spdif/?rdt=64115
Scripts to test in ADB Shell to make SPDIF work for just DolbyDigital/DTS 5.1:
settings put global digital_audio_format 1 settings put global digital_audio_subformat 5,7 settings put global nrdp_external_surround_sound_enabled 1 settings put global digital_sound 1
https://www.reddit.com/r/AndroidTV/comments/pu5pdk/anyone_else_seeing_this_when_accidently/
//Enter these commands through ADB shell: settings put global audio_mixing 0 settings put global digital_audio_format 3 settings put global digital_audio_subformat 5,6,7,8,13,14,17,18,19 settings put global encoded_surround_output 3 settings put global encoded_surround_output_enabled_formats 5,6,7,8,13,14,17,18,19 settings put global external_surround_sound_enabled 1 settings put global nrdp_external_surround_sound_enabled 1 settings put global surround_sound_supported 1 settings put global use_external_surround_sound_flag 1 settings put system enable_pass_through 1 settings put system support_dolby 1 reboot //Don't have the MiBox S anymore, but you can take notes beforehand of the original setting by changing <put> to <get> and not inputting the <variable_at_end> just in case you want to reverse the input later, one example to get current original settings: //settings get global encoded_surround_output_enabled_formats
https://www.reddit.com/r/AndroidTV/comments/13j1g1k/issues_with_51_sound_on_netflix_xiaomi_tv_box_s/
Are you still using same SPDIF cable with AVR?
Cause your Audio problem can only potentially be solved with some ADB shell scripts.
Netflix needs this setting shell command to be set for SPDIF passthrough:
settings put global nrdp_external_surround_sound_enabled "1"
Other options to enable beforehand:
settings put global db_id_sound_spdif_output_enable "1"
settings put global digital_audio_format "1"
*note: DIGITAL_AUDIO_FORMAT=1 is the old Amlogic setting that enabled SPDIF in Android 9.
If your AVR doesn’t support DolbyDigital+, only old standard DD, then add:
settings put global digital_audio_subformat "5,6"
settings put global encoded_surround_output_enabled_formats "5,6"
Settings to force SPDIF codecs with ExoPlayer2 video engine:
settings put global use_external_surround_sound_flag "1"
settings put global external_surround_sound_enabled "1"
getprop setprop vendor.audio.input.active AUDIO_AC107 setprop vendor.audio.output.active AUDIO_CODEC,AUDIO_HDMI
