External speakers are buzzing when no sound is playing

Question

I'm completely new in linux and I was just curious of this OS so here I am.

I mount dual-boot Ubuntu 20.04 LST on my Dell Vostro 5790 and there problem began. I hear constant, static, annoying, buzzing sound from my external speakers. This occur when:

• no sound is playing in background (when the quietest sound occur speakers are not buzzing and that weird sound coming back after about 5 second of silience)
• sound setting window is opened (when i open sound settings then speakers are not buzzing, after i close this window annoying sound coming back after about 5 seconds)
• I reload alsa sudo alsa force-reload (after this sound is completely gone no buzzing and no sound at all)
• when i plug charger this noise is much heavier and louder.

What is completely strange is that when i plug headphones i hear no that annoying sound. When external speakers are unpluged built-in speakers are not buzzing. On Windows10 i have no this problem. That's why I am 95% sure that it is not hardware problem.

I know that above description could looks like duplicate for Ubuntu 20.04 - After last update, speakers are buzzing unless I open the sound settings window but believe me, i tried these solutions already.

Okay, there is what i have tried so far:

• I added options snd-hda-intel power_save=0 power_save_controller=N into /etc/modprobe.d/alsa-base.conf, saved and restart - nothing changed
• I tried to modify /etc/default/tlp and /etc/tlp.conf but i have not such files (probably tlp is not installed - i didn't seen it on installed software list)
• I tried reinstall Skype as mentioned here constant buzzing noise from speaker when headphones are plugged in Ubuntu 13.04
• I tried adjust alsamixer but of course, nothing changed
• I tried to reinstal alsa-base and pulseaudio
• I tried https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Glitches,_skips_or_crackling
• I tried How do I fix laptop speakers popping when no sound is playing?
• I tried to burn new ISO image on new USB-stick and install new system - nothing changed.

And now I'm out of ideas. I feel like I dig whole internet for this problem. It drive me crazy so much that I am near to delete and forgete about linux.

Feel free to ask about details.

Please, help.

Answer 1

FINALLY!

I found solution for this annoying problem 18.04 audio (Realtek ALC3254) fails on new Dell G3 15 3590

1. Open terminal
2. Type sudo nano /etc/default/grub
3. Find GRUB_CMDLINE_LINUX_DEFAULT
4. Append snd_hda_intel.dmic_detect=0 (result line should look like GRUB_CMDLINE_LINUX_DEFAULT="quiet splash snd_hda_intel.dmic_detect=0)
5. After save type sudo update-grub

Buzzing from speakers are not appear anymore. There is "pop" from speakers when system is booting or switching off but i can live with it.

EDIT

I played with it a little bit after solving this problem and found that line options snd-hda-intel power_save=0 power_save_controller=N in /etc/modprobe.d/alsa-base.conf is still necessary.