@Po-Hsu Lin (cypressyew) the workaround in bug #1966066 worked for me, symptoms are the same I think this is a duplicate.
I changed at /etc/pulse/daemon.conf ``` default-sample-rate = 48000 alternate-sample-rate = 48000 ``` -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1966327 Title: external audio interface cracking sound Status in linux package in Ubuntu: Incomplete Bug description: after a recent kernel update, my KRK Rokit 5 speakers connected to the Behringer U-PHORIA UMC22 started to emit strange clicking sound artifacts. nothing like this happened before the last update. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1966327/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp