Daniel, over the span of this thread users have been experiencing this on 18.04, the topic contains information regarding users (Including myself) testing this on 18.04 and effects all distro's i know because of a bug in the current version of the snd_hda_intel driver.
The related open kernel issue can be found here : https://bugzilla.kernel.org/show_bug.cgi?id=195303 . While i haven't tested for its presence in Ubuntu 18.10 the bug was still present in 18.04 earlier this week as confirmed by a discord friend who found my voice distorted in the way this bug describes. Using a newer kernel on 18.04 does not fix the issue as the issue has not yet been addressed on a driver / pulseaudio level. ** Bug watch added: Linux Kernel Bug Tracker #195303 https://bugzilla.kernel.org/show_bug.cgi?id=195303 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1716654 Title: [System Product Name, Realtek ALC1220, Pink Mic, Rear] Underruns, dropouts or crackling sound To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1716654/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs