I can confirm that @robertjjoynt's comment works very well on my HP ProBook 650 G1 pc which is currently operating ubuntu 18.04 (long card name: "HDA Intel HDMI at 0xd0730000 irq 33).
I should say that the sound still clips every so often, but I can finally listen to Smashmouth in peace while working. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1648183 Title: Crackling and popping sound when using headphones To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1648183/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs