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The audio is stuttering/crackling whenever played in external speakers/headphone or the laptop's speaker.

I have tried several solutions to no avail, and different combinations of them:

  • https://unix.stackexchange.com/a/136591

    • Changing default-sample-rate = 42100 → default-sample-rate = 48000 at /etc/pulse/daemon.conf.

    • Changing load-module module-udev-detect → load-module module-udev-detect tsched=0.

      This has significantly reduced the amount of noise and slowness of the music but it is not perfect.

  • https://askubuntu.com/a/1067759: pulseaudio -k.

  • https://askubuntu.com/a/1135589: Add options snd-hda-intel power_save=0 power_save_controller=N to /etc/modprobe.d/alsa-base.conf.

  • Audio stuttering on 18.04: Quoting:

    • add options snd-hda-intel position_fix=1 to /etc/modprobe.d/alsa-base.conf
    • edit to load-module module-udev-detect tsched=1 in /etc/pulse/default.pa
    • add resample-method = src-sinc-best-quality in /etc/pulse/daemon.conf

    Points to other sources as well.

I have also tried:

pulseaudio -k && sudo alsa force-reload

Reboot.

Other solutions which I have not tried because there is no such an option for me:

I have recently upgraded from Lubuntu 16.04 and it worked perfectly. I have a Lubuntu 18.04:

$ uname -a
Linux abcde 4.15.0-54-generic #58-Ubuntu SMP Mon Jun 24 10:55:24 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
fmv1992
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1 Answers1

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So after many exhaustive attempts the issue is solved.

The cases and combinations tried are so varied that I cannot determined what did it.

Possibly a combination of the solutions above. If I had to guess what cracked it was uninstalling/purging pulseaudio (leaving the alsa modules) and then rebooting. This certainly solved the issue. Then to my astonishment reinstalling pulseaudio left me with a full-working audio again (pulseaudio is very convenient to chose which output source to use).

fmv1992
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