It is an issue of power_save setting. It is not a driver's code issue, it is a kconfig issue. From rc4, the CONFIG_SND_HDA_POWER_SAVE_DEFAULT is set to 1 rather 0, then the codec enables the runtime PM, that introduce the noise.
You can workaround it by adding an module parameter (/etc/modprobe.d /alsa-base.conf, add a new line in this file and reboot. "options snd- hda-intel power_save=0". And I will change the driver's code, and upload a new dkms, if that dkms works, you don't need to add that module parameter anymore. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821663 Title: [regression][snd_hda_codec_realtek] repeating crackling noise after 19.04 upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821663/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
