If you experience the same sounding glitching in Win 10 then yes this sounds like a hardware problem. But you also said that "Amplification worked well for years before recent PulseAudio update", so I wonder if you can find any older Ubuntu release where it works still? Try live booting some of these:
http://cdimages.ubuntu.com/releases/ Otherwise, try replacing your 3.5mm audio splitter and related cables. I was stunned in the past to discover that cheap/broken audio cables can severely distort sound, so it's probably worth trying other cables and connectors. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1750379 Title: Distortion Realtek ALC887 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1750379/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
