This solved the issue for me: https://ubuntuforums.org/showthread.php?t=2338349
Basically, what I did was Start alsamixer with this command: alsamixer -c1 And then: 1. Navigate to the Loopback channel rightmost with arrow-key 2. Disable the Channel by pressing the arrow-down-key once 3. Save and quit the alsamixer with ESC Reboot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1502155 Title: [20AQ0069GE, Realtek ALC3232, Speaker, Internal] crackling sound while booting Unity-Desktop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1502155/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
