After this week's updates of the pulseaudio packages I suddenly got these crackling sounds as well. Running 'alsamixer -Dhw' and then unmuting the PCM channel solved it, as mentioned in the duplicate report of Bug #275392.
-- noise (crackling) when muting PCM volume and audio is playing https://bugs.launchpad.net/bugs/272321 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
