Buzz noise audio - KDE

Change your working directory to /etc/modprobe.d: 

 cd /etc/modprobe.d 

 And now, create a new file named audio_disable_powersave.conf and open with the nano text editor using the given command: 

 sudo nano audio_disable_powersave.conf 

 And put the following lines in that file to turn off the power-saving setting in the sound card permanently: 

 options snd_hda_intel power_save=0 

 

 For a USB sound card , you can use snd_usb_audio : 

 options snd_usb_audio power_save=0 

 Now, save changes and exit the Nano text editor by pressing Ctrl+X keys. Reboot your system, and you can enjoy a noise-free workspace.