To me this seems a kernel scheduling problem and I experimented with the a few well know RT hacks.
Create the file /etc/security/limits.d/audio-limits.conf with the following content: # /etc/security/limits.d/audio-limits.conf @audio - rtprio 99 @audio - memlock 512000 @audio - nice -19 Reboot and then apply the following command: for i in $(pgrep softirq); do chrt -f -p 99 $i; done And check if you notice a difference, please? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1136110 Title: USB Audio Codec choppy playback To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1136110/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
