I'm having this issue too in xubuntu 14.04.1. It often happens when I'm using Alsa, and it is random, sometimes audio works well but then all of a sudden it gets this repeated popping/crackling sound.
When in the normal audio, top shows pulseaudio with 3~5% of CPU usage and pavucontrol with 9~10%, and pavucontrol is like the attach picture. ** Attachment added: "pavucontrol with normal audio" https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1353013/+attachment/4250420/+files/Normal%20Audio.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1353013 Title: Popping/Crackling sound when playing audio in Ubuntu 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-hdmi-pulseaudio/+bug/1353013/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
