"Clock Source 41 not valid" in syslog and during playback the audio starts and stop continually, it does stuttering. When the device is connected via USB (both 2.0 and 3.0 ports), I see Dell XPS with Ubuntu 20.04 on kernel 5.8. I have tested the Behringer UMC 404 HD usb audio device ( ) Output of alsa-info -no-upload for UMC202HD Quirk table entries for Behringer devices
5.15-v7l+, 5.8, 4.18 on both x86_64 and arm64Īlsa info from older model that is working without issue.īheringer UMC 404 HD bcdDevice=1.35 - LSUSB verbose - confirmed audio stutteringīheringer UMC 404 HD bcdDevice=1.35 - alsa-info - confirmed audio stutteringīehringer UMC 204 HD bcdDevice=1.35 - alsa-info.sh - stutteringĪ workaround patch for interface reset at clock change
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