Nucleus Settings no longer show HDMI A or HDMI B as Audio output options

Core Machine (Operating system/System info/Roon build number)

Nucleus Build 610

Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)

Ubiquiti wired Network Switch

Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)

Trying to use the HDMI A output

Description Of Issue

I noticed a few days ago that I no longer see the Zone that I had previously setup for the HDMI A jack directly out of the Nucleus.

All of my Non-Nucleus zones are working fine, but not the Nucleus output.

When I go to settings -> Audio, I do not see the ability yo enable/disable the HDMI A and HDMI B outputs anymore. They have vanished!!

Please let me know if this is a known issue, and help me get back my HDMI output.

Thanks Support


@support, any ideas here? I’d love to get this working before the weekend.



Reboot Nucleus and router.

Hey @Chris_Heilig,

I would try a reboot of the Nucleus as the first step here, if that doesn’t work, please share a screenshot of your Roon Settings -> Audio tab.

What do you see, Nucleus and Roon Nucleus maybe?

Rebooting the router and Nucleus resolved the issue.

Weird, since I know I tried rebooting the Nucleus already. But I am back up.

Thanks all.


Hi @Chris_Heilig,

Glad to hear you have the issue sorted out! Do let us know if you run into any further difficulties an we can certainly take a look if so!

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