I'm also experiencing this. Commenting the "options snd-hda-intel..." line also helps but still have the popping sound when mute/unmute.
If anyone needs more info from me to help solve this let me know. Is this bug related to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/433782 -- Regular crackling sound on ThinkPad R61 https://bugs.launchpad.net/bugs/500987 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
