Cant activate 4k and 5.1 audio on Xbox one X get error 0x80bd0009

I have the same problem but i cant even enable 5.1 audio i can enable 5.1 audio but if i select HDMI on video output, instead of automatic. But that only allows me to select 1080p resolution, not 4k. So i can only use 4k or 5.1 audio on Xbox One X

I have the same problem but i cant even enable 5.1 audio i can enable 5.1 audio but if i select HDMI on video output, instead of automatic. But that only allows me to select 1080p resolution, not 4k. So i can only use 4k or 5.1 audio on Xbox One X

It is worked for me too. Only point is once turn on auto detect and pick 4 k do not click on Video Mods Allow Hdr 10 it is de activating dolby

Do you have an optical cable (SPDIF) to bypass the HDMI in the receiver/TV, completely, to see if that works? You can then turn off your HDMI audio with that.

Also, I've found a similar post here that may help:
https://answers.microsoft.com/en-us/xbanswers/forum/xba_console/error-code-0x80bd0009-xbox-one-x/a48bdd21-492e-4592-99fb-654d357455f3

"Hello, i had the same problem with my HDMI home-theater, i couldn't get HDMI sound passtrough 5.1 (error 0x80bd0009) probably due to 4K resolution. I found a solution so i hope it could help you, it just need to be configured first in manual 1080P, it's
just a bug of the autodetect resolution mode that almost never works for passthrough sound even in 1080p now. First you need to switch in display and sound TV connection from Auto-detect to HDMI. Then you'll have a poor resolution. You'll have to switch to
1080P and then accept all the options available in advanced video options and on the right for games and apps, don't forget to select : Allow 4k. When you'll have done this you'll need to go in audio output and select under speaker audio HDMI audio and 5.1
passthrough (or 7.1 depending on your home-cinema). Here you shouldn't get the error code (0x80bd0009). Then you'll just need to get back to Display and sound and go back to Display Auto-detect and then go back to 4k resolution. It worked for me as i was getting
the same error for month, after xbox upgrade, while at first it worked perfectly with the same material. Hope this will help you! Bye."

Do you have an optical cable (SPDIF) to bypass the HDMI in the receiver/TV, completely, to see if that works? You can then turn off your HDMI audio with that.

Also, I've found a similar post here that may help:
https://answers.microsoft.com/en-us/xbanswers/forum/xba_console/error-code-0x80bd0009-xbox-one-x/a48bdd21-492e-4592-99fb-654d357455f3

"Hello, i had the same problem with my HDMI home-theater, i couldn't get HDMI sound passtrough 5.1 (error 0x80bd0009) probably due to 4K resolution. I found a solution so i hope it could help you, it just need to be configured first in manual 1080P, it's
just a bug of the autodetect resolution mode that almost never works for passthrough sound even in 1080p now. First you need to switch in display and sound TV connection from Auto-detect to HDMI. Then you'll have a poor resolution. You'll have to switch to
1080P and then accept all the options available in advanced video options and on the right for games and apps, don't forget to select : Allow 4k. When you'll have done this you'll need to go in audio output and select under speaker audio HDMI audio and 5.1
passthrough (or 7.1 depending on your home-cinema). Here you shouldn't get the error code (0x80bd0009). Then you'll just need to get back to Display and sound and go back to Display Auto-detect and then go back to 4k resolution. It worked for me as i was getting
the same error for month, after xbox upgrade, while at first it worked perfectly with the same material. Hope this will help you! Bye."

Hello, i had the same problem with my HDMI home-theater, i couldn't get HDMI sound passtrough 5.1 (error 0x80bd0009) probably due to 4K resolution. I found a solution so i hope it could help you, it just need to be configured first in manual 1080P, it's
just a bug of the autodetect resolution mode that almost never works for passthrough sound even in 1080p now. First you need to switch in display and sound TV connection from Auto-detect to HDMI. Then you'll have a poor resolution. You'll have to switch to
1080P and then accept all the options available in advanced video options and on the right for games and apps, don't forget to select : Allow 4k. When you'll have done this you'll need to go in audio output and select under speaker audio HDMI audio and 5.1
passthrough (or 7.1 depending on your home-cinema). Here you shouldn't get the error code (0x80bd0009). Then you'll just need to get back to Display and sound and go back to Display Auto-detect and then go back to 4k resolution. It worked for me as i was getting
the same error for month, after xbox upgrade, while at first it worked perfectly with the same material. Hope this will help you! Bye.