Roon on Laptop B unable to detect audio devices (ref#Y40SCM)

What’s happening?

· Other

Describe the issue

Laptop A can connect to Roon Server and play music, while the laptop B cannot and Roon doesn't see the audio devices on the laptop B. In addition, on laptop B, Roon only see audio devices from Laptop A

Describe your network setup

Roon server running on a Mac. While the laptops A and B are connecting to it via Wifi

Hey @ekuo,

Since all your machines are running Mac, can you please navigate to macOS System Settings > Privacy & Security > Local Network , and make sure Roon is allowed. If it is already enabled, toggle it off and on again. Then reboot your Mac, and see if the same issue persists.

I tired the problem persisted. I can see one of the problem is that laptop B is only showing the audio devices from laptop A. My screenshot taken from laptop B showed that on laptop B, the only available audio devices are from laptop A. Audio devices listed under “This Mac” (from the screenshot) are not available on Laptop B. Laptop B is only a macbook laptop with not external devices connected to it.

Perhaps this is the issue here. When I closed out the laptop B Roon, Roon on laptop A will work. However I could not get Roon to work on laptop B.

Hi @ekuo,
Can you check your firewall settings on both laptops? Make sure that RAATServer is allowed through on both. Most likely laptop B is the culprit.

RAATServer is allowed on Laptop B as well as A. I have attached a screenshot of laptop B


On Laptop B, I tried to reconnect to my Mac Mini Roon server as well as delete Roon and reinstalled it and it still didn’t work.
Is there some save settings that prevent Roon from registering the audio device on laptop B.

@ekuo was Laptop B restored from a Time Machine backup of Laptop A?

Yes. It was restore from a Time Machine based of Laptop A. That’s why I asked if there is any setting files (like .profile, etc) for Roon that needs to be reset.

Roon application IDs are tied to the specific computer on which they are installed, with a unique ID created for each computer. Restores from Time Machine cause problems as to Roon there are now two computers using the same ID. You will need to completely uninstall Roon on Computer B and reinstall using a clean download from:

https://roon.app/en/downloads

To completely uninstall Roon on a Mac, follow these instructions:

Reboot Computer B and reinstall using the MacOS link on the Roon Downloads page above.

…And remove the .rmembid file hidden in your home directory as well (use the Terminal).

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Both @Robert_F and @DDPS are correct here @ekuo - let us know if the above information is helpful! :+1:

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I will report it later if this work. Maybe using MAC address as an ID is better idea than using some assigned ID. I am sure someone at some point will have to migrate their laptop or PC and this will happen to them.

After following @Robert_F and @DDPS steps, Roon is finally working again. Thanks again everyone.

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