ubuntu 21.10 - buzzing sound in suspend mode (ext. speakers)

[macle7400]

Hello,

I have awful buzzing sound when I close my laptop lid on my ubuntu 21.10 (dell xps 9510). It stops when I open the lid.

I've tried to add options snd-hda-intel power_save=0 power_save_controller=N in /etc/modprobe.d/alsa-base.conf but it didn't help.

It's seems suspend mode puts sound card in mode which results in buzzing sound.

Any ideas how to troubleshoot / resolve situation?

Regards,
M.

[macle7400]

Any ideas?