After installing Ubuntu 20.04 on my desktop computer (Realtek onboard sound card, codec ALC887), I am experiencing a very annoying click (popping sound) every time I open any content with audio.
It was happening because Ubuntu turned on the sound card power-saving capabilities. Turning it off can be the only way to get rid of the annoying sound:
Verify how is your sound card's
If it returns
1, do the following to change it temporally:
echo "0" | sudo tee /sys/module/snd_hda_intel/parameters/power_save
If the previous step worked for you, persist that configuration (otherwise the problem will continue after reboot):
echo "options snd_hda_intel power_save=0" | sudo tee -a /etc/modprobe.d/audio_disable_powersave.conf
(Optional) You can also do the same for
power_save_controllerparameter following the steps 1, 2 and 3 replacing
Note: using the first step will probably return
Yfor this parameter, instead of
For those here in 2022 that have just upgraded to Kernel version
uname -a to check your kernel version.)
There appears to be a bug in this version causing audio crackling sounds for external audio interfaces but there is a workaround.
Change Pulse Audio's default sample rate to 48000.
sudo nano /etc/pulse/daemon.conf
Find the lines starting with
; default-sample-rate ; alternate-sample-rate
Remove the ; and change the values to 48000 so it looks like this:
default-sample-rate = 48000 alternate-sample-rate = 48000
Save the file, then restart pulse audio with
You can suspend power saving via PulseAudio instead of via the sound card and comment out the following line in /etc/pulse/default.pa to look like this:
### Automatically suspend sinks/sources that become idle for too long #load-module module-suspend-on-idle
Then restart PulseAudio:
systemctl restart --user pulseaudio
If that doesn't work then just kill it and it will restart:
I've tried solutions above however they did not seem to help me. Or at least did not seem to help me alone. The extra step that I did was to enable auto mute in alsamixer.
Steps to do that:
alsamixerto the terminal.
Scroll all the way to the right by pressing RIGHT arrow key until you hit
Enable it by pressing UP arrow key then hit ESC.
Note that I have to do it again after restart. However I am sure there is a way how to preserve these alsamixer settings such that they survive rebooting.