Fixing The BEEP Noise on Linux Mint

Problem

I’ve used Linux Mint for over a year now, and I have to say this is as close to perfection as I’ve ever seen in a Linux distro! 

The only recurring issue in my installs relates to sound: after a few minutes of playing audio, my machine will emit a loud buzzing beep noise that is impossible to mute with the volume controls.  This happens using system speakers or the audio jack, so I know this isn’t directly a hardware issue.  The beeping doesn’t immediately return on reboot. 

Running pulseaudio –k in terminal stops the sound immediately.  The sound may or may not return during that session.

This is a known bug for many of us on lightweight PCs (e.g. Acer Chromebook 15, my test subjects).  The exact reasons seem to vary depending whom you ask, as do the fixes (power saving options?  Intel drivers?) but the fix has been the same for all of my Chromebooks:

nano etc/modprobe.d/alsa-base.conf

Add this line to the end of the file:

options snd_sof sof_debug=1

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