xbox series x interfering with sonos arc

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I have a Sonos Arc connected to my Samsung 4k TV, sorry I don’t have the specific model number. I have my Arc soundbar connected through the TVs HDMI Arc port. I have a Metra HDMI splitter plugged into my only other HDMI port. I have my cable box and previously had an Xbox one through the splitter. For years things worked great, no issues. We just got an Xbox series X. Since setting this up I’ve noticed that my Arc seems to not be recognized by my Samsung and my TV will revert to the TV speakers, at times I will get no audio from the Xbox. I can fix it by unplugging the splitter from the other HDMI port, then once the Arc is recognized by the TV, almost immediately, then I can plug back in the splitter to the other HDMI port and things work great until for a while. I’ll come back an hour later and same issue. I have pass through on and Dolby atmos turned off on the Xbox. Any ideas for a permanent fix? I’ve tried power cycling everything. I can’t seem to find a fix that will work through power on/off over the course of a day. Any ideas?

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AirgetlamAnswer

Ah, I think I have figured it out.
HDMI 1 and HDMI 2 (ARC) are sideways on the back, HDMI 3 (which in the picture looks like it is labeled as part of HDMI 1) sticks straight out. It’s labeling isn’t ‘painted’ white, but you can barely see in the picture (I think) that it is labeled HDMI 3.

Bruce

Airgetlam

The trouble started when you upgraded to the newer XBox? My suspicion is the level of electrical activity caused by this change is interfering in some way with the CEC recognition of the Sonos through your Metra splitter. I’d be tempted to check all devices for firmware updates, and frankly, try without the splitter completely, plugging the XBox directly into your TV set, leaving the Arc connected to the ARC connection.

You may also want to submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here, their lawyers get sensitive about GDPR. Those of us in this forum, the public, don’t have access to the hard data Sonos stores in a diagnostic.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

Bruce

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Dadude3676Author

Contributor I

Thanks for the reply. Unfortunately the TV only has two HdMI ports so that why I use the splitter. I will try hooking directly to the TV or contact Sonos support. Much appreciated

Airgetlam

If you’d be so kind, come back and tell us what you find out. I certainly am interested to either validate my assumptions, or learn new things.

How old is this Samsung 4K TV? Seems unusual that it only has two HDMI ports.

Often, the model type can be found in the settings somewhere, if it isn’t possible to get behind the TV.

Bruce

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Dadude3676Author

Contributor I

AU8000BXZA is what I could find

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Dadude3676Author

Contributor I

UN75AU8000BXZA

Airgetlam

Thanks. Let me do some searching, be back in a minute.

Bruce

Airgetlam

No longer in production, at least here in the US, but what I do find suggests three HDMI inputs. If you’re using the ARC for the Sonos Arc (as you should), there should still be two other HDMI inputs.

Bruce

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Dadude3676Author

Contributor I

Hmmm, I only see two but will search some more

Airgetlam

Huh. Found this, though, which seems to confirm just two:

https://www.samsung.com/us/televisions-home-theater/tvs/crystal-uhd-tvs/75-au8000b-crystal-uhd-smart-tv-2021-un75au8000bxza/

Bruce

Airgetlam

Ok, I’m confused (like you ;)). The picture shows two, later down the page, on the specs, it says 3. Do you happen to have a manual?

Bruce