Hi @G_P,
We haven’t forgotten about this issue, although we recognize how long this thread has been open without a conclusive response. Here’s the situation:
What you’re experiencing with the 3.5mm input is expected behavior in Android and UAPP will show the same behavior. That said, there is work we have planned that can help mitigate this popup. I’ll try to get a firm timeline for when that will take effect.
In the meantime, please be aware there are two high-priority bugs with USB DACs on Android in ARC that are separate from your issue, but given your setup, you may see symptoms. Please see here: Periodic Disconnect from USB DACs in ARC and here: Roon ARC Build 182 Crashing with Certain USB DACs on Android [Investigating]