Public bug reported:
I could not find an existing report on this.
When Ubuntu 20.04 does powersaving, the audio card powers down.
When the card powers up again, it emits a short annoying popping/crackling
noise, then audio plays just fine.
The workaround is to disable power-saving for the audio card, by adding
options snd_hda_intel power_save=0 power_save_controller=N
to a file in /etc/modprobe.d/alsa-intel-no-powersave.conf
and then reboot.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
I could not find an existing report on this.
- When Ubuntu does powersaving, the audio card powers down.
+ When Ubuntu 20.04 does powersaving, the audio card powers down.
When the card powers up again, it emits a short annoying popping/crackling
noise, then audio plays just fine.
The workaround is to disable power-saving for the audio card, by adding
options snd_hda_intel power_save=0 power_save_controller=N
to a file in /etc/modprobe.d/alsa-intel-no-powersave.conf
and then reboot.
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https://bugs.launchpad.net/bugs/1869372
Title:
Popping/crackling noise when sound card wakes from powersaving
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