· I'm having trouble with Roon ARC
· Other
· None of the above
· Other
Arc displaying duplicate albums
Simple ISP router via pppoe, single lan. Server attached to wires lan. Arc working properly almost all the time.
But with recent usage, albums list is full of duplicated albums
I can’t explain why it does this but I can tell you that if you disconnect Arc from your Roon Server and then reconnect it will restore order…at least for a while.
Hi @leafy / @AceRimmer ,
I assume there’s no change in behavior with a force-quit and restart of ARC? What is curious is that I tried to look over your ARC diagnostics @leafy and it doesn’t look like anything is showing up. Are you using ARC in offline mode or have some kind of DNS blocker active?
It did not make a difference till I rebooted my Roon server. I was using ARC in online mode because I played most of the music over Qobuz. I do have a DNS filter but that’s for blocking YouTube in the household. Any DN that I should allowlist?
Hi @leafy,
Please whitelist the following DNs:
*.crashlytics.com
*.browser-intake-datadoghq.com
*.datadoghq.com
The symptom you’ve reported - duplicate albums in the Albums browser in ARC - has been simmering for some time. Please allow us a chance to inspect diagnostics once you’ve whitelisted the domains above and we’ll respond with more precise information.
all 3 domains added.
Thanks @leafy, we’ve captured the diagnostics we need from the ARC framework.
Do you have an example of a duplicated album in the Albums list in ARC that is locally stored?
Just to clarify this point - did restarting your RoonServer relieve the duplication you were seeing in ARC, at least temporarily? At what point did you begin to see duplicated albums in ARC again?
Thank you again for the report.
I believe all the dupes were from Qobuz and nonlocal, but unfortunately it had not reproduced itself since I restarted the server couple of days ago. Would it make sense to close this for now and reopen when it happens again?
One additional point which I think might be the trigger is that the first time I saw this was when I connected to Android Auto and noticed the duplicated albums in the AA album listing, and then looking back to my phone, ARC also displayed duplicated albums.
The server was restarted after I got home and it hasn’t manifested itself since then, will report back the next time it gets connected to AA.
Hi @leafy,
Thanks for providing that detail - we’ll see if we can reproduce that particular mechanism in-house.
Hi @connor ,
Well, it just manifested again. I’ll leave the server running for now.
Thanks for the update @leafy. We’ll pass the relevant diagnostics along to development.
The upcoming release will contain background improvements to ARC - server connectivity that may change the nature of these symptoms. However, the sensitivity to Android Auto suggests this might require a more specific fix at the level of the Android API or the ARC framework in a future release. We should know more shortly.
Does this duplication issue ever not occur after connecting ARC to Android Auto? What about if you turn ARC on first outside of the car, navigate to the Albums page, and then connect?
Can confirm that if I start ARC before connecting to AA, the duplicates don’t happen.
Thanks for the additional info @leafy!
At this point, we’ll need our Arc development team to reproduce this behavior in-house in order to make any progress in better understanding any potential causes, as well as solutions. This may take some time, but we have a ticket in with the team and it’s in their queue.
If the thread closes before any new information is shared our way, please know we’ll re-open it as soon as any updates are shared our way. We very much appreciate your patience in the meantime! 
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