Comment 3 for bug 1821663

Daniel,

your idea was right.

1) Using the kernel 4.18 the noise disappeared
2) crackling was from the headphones
3) Over-Amplification is (and was) disabled

A-

March 26, 2019 4:01 AM, "Daniel van Vugt" <email address hidden> wrote:

> Thanks for the bug report. Since pulseaudio is unchanged (the same
> version) in 19.04 from 18.10 I think we can exclude that as a possible
> cause.
>
> 1. The first idea I have about possible causes is a kernel change (and
> the kernel has changed a lot). Please try some older kernels from here:
>
> https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D
>
> (for reference, Ubuntu 18.10 uses kernel 4.18).
>
> 2. Also, is the crackling from internal speakers or headphones?
>
> 3. Finally, please check that something hasn't accidentally enabled:
>
> Settings > Sound > Over-Amplification
>
> as that could cause crackling.
>
> ** Package changed: pulseaudio (Ubuntu) => linux (Ubuntu)
>
> ** Changed in: linux (Ubuntu)
> Status: New => Incomplete
>
> ** Summary changed:
>
> - repeating crackling noise after 19.04 upgrade
> + [snd_hda_codec_realtek] repeating crackling noise after 19.04 upgrade
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1821663
>
> Title:
> [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