https://bugzilla.kernel.org/show_bug.cgi?id=215934

commit kernel tree --> ae8b163 https://github.com/torvalds/linux/commit/ae8b1631561a3634cc09d0c62bbdd938eade05ec Takashi Iwai [email protected]

linux-behringer error audio stuttering (not xruns)

I buy a behringer UMC204HD and it was driving me crazy..

OS : Archlinux - 5.17.2-arch3-1

#dmesg

clock source 41 is not valid, cannot use Tested on different kernel.. distro... the same problem

Similar issue shows up with other hardware (USB DAC in general)

It is a common issue with USB DAC interfaces

Concern ALL U-PHORIA Series

U-PHORIA Series - Broken linux compatibility

UM2

UMC1820

UMC202HD

UMC204HD

UMC22

UMC404

lsusb

      Bus 001 Device 007: ID 1397:0508 BEHRINGER International GmbH UMC204HD 192k

HOW TO FIX TEMPORARY THE BUG !

Unplug the USB interface

      sudo modprobe -r snd_usb_audio
      sudo modprobe snd_usb_audio implicit_fb=1

Plug the USB interface and test

If the temporay fix is working, you can add rules to :

/etc/modprobe.d/UMC204HD.conf

options snd_usb_audio implicit_fb=1