Problem

If you are running default kernel with your Ubuntu or Linux Mint installation, you probably won’t face this problem during kernel updates because all packages are coming from the official distribution sources. However, if you like to run the newest Linux kernels and update them using mainline kernel installer, you may get warning possible missing firmware during the installation. Few days ago I got this warning on my Linux Mint 20.3 Una while installing kernel 5.17.7. In most of the cases this warning won’t affect normal functionality of your Linux machine, but if you hate warnings, like I do, here is what you can do. I guess you regularly update your apt packages, but still new kernels may complain, which further means you may need even newer package. In my case I had to install linux-firmware package from Jammy Jellyfish , the newest LTS Ubuntu, Ubuntu 22.04 LTS. ...

This problem was bugging me for quite a while and today I finally decided to address it. There are lot of advices online to try to run Firefox in safe mode and see if that fixes the problem, so I tried that first but it didn’t help. Safe mode actually just turns off extensions, but in my case it didn’t help. I found out that the easiest way to reproduce the problem was to run YouTube video in one window and after that open another window with eBay. After few seconds crackling and popping always started. I run audio mainly via HDMI to my monitor, but as I have external DAC I decided to try that audio output and yes, it worked without problems. So, it seemed something was wrong with PulseAudio over HDMI. ...