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It used to work just fine on Linux, >> as well. However, at some point a few weeks ago, it started behaving >> oddly. Unfortunately, I cannot pinpoint exactly when the problems >> started happening because the symptoms did not immediately point me >> toward the device and I did not immediately figure out what was going >> on as I only noticed hangs when shutting down the system. > > Did you update your kernel between the time when the device was > working okay and now? If this is a regression the obvious suspect would be 5fadc941d07530d681f3b7ec91e56d8445bc3825 ("ALSA: usb-audio: Fix init call orders for UAC1") I'd suggest you try reverting that. Regards Oliver