How to fix sound with just the alsamixer CLI app, headphone plug event

[westurner]

I was able to get stereo sound from the speakers and headphones without installing gnome-alsamixer with, IIRC:

  alsamixer
  # <F6> ("Select sound card")
  # <Down> (Select "rockchip,es8316")
  # <Enter>
  # <Right> x 24 (Until "DAC Stereo Enhancement" is selected)
  # <Up> x 7 (100% seems to make the right channel as loud as the left)
  # <Right> x 4 (Until "Left Headphone Mixer Left DAC" is selected)
  # <m> (To unmute)
  # <Right> x 3 (Until "Right Headphone Mixer Right DAC" is selected)
  # <m>  (To unmute)
  # <Esc>

• [x] Alsamixer manual steps to fix sound with the CLI
• [ ] Set the speakers volume to 0 when headphones are plugged in and restore when unplugged
• [ ] There are apparently various asound.state files that can set all of the values correctly without CLI or GUI steps.
• [ ] There's probably a way to script alsamixer config changes with a shell script that modifies settings instead of overwriting asound.state (which may very well be the best way to handle this issue)
• [ ] Is this actually an issue with e.g. non-sane firmware defaults? Why is this only necessary with this soundcard?

[westurner]

From https://forum.pine64.org/showthread.php?tid=9046&pid=63841#pid63841 :

After flashing to EMMC I immediately upgraded to 32 beta. This went well minus the kernel being stuck on the older version included with the original release presented here. I would like to update the boot loader to use the newer kernel from 32 beta, as this includes the bits necessary to get the ALSA sound driver to split the headphones and built-in speakers from either both playing or none playing. Apparently Manarjo also has a solution to the broken headphone hot-plug jack as well. Sadly, the lack of updated kernel blocks usage of sound in public on this distro.

3.5mm jack hotplug also works w/ the default Debian install. I've updated everything; so I don't recall whether it worked out of the box with the default Debian install.

Does anyone know how to update the bootloader? Alternatively, can we get a 32 build (even if beta?)

[westurner]

• https://wiki.pine64.org/index.php/Pinebook_Pro#Sound_issues
  • https://gitlab.manjaro.org/manjaro-arm/packages/community/pinebookpro-post-install/blob/master/asound.state

    curl 'https://gitlab.manjaro.org/manjaro-arm/packages/community/pinebookpro-post-install/-/raw/master/asound.state' -o /tmp/asound.state
    sudo cp /tmp/asound.state /var/lib/alsa/asound.state

[westurner]

The manjaro pinebookpro-audio package appears to handle the headphone jack [un]plugged ACPI event: https://gitlab.manjaro.org/manjaro-arm/packages/community/pinebookpro-audio

• dnf install -y acpid; systemctl enable acpid; systemctl start acpid (Should already be on?)
• https://gitlab.manjaro.org/manjaro-arm/packages/community/pinebookpro-audio/-/blob/master/pinebookpro-audio.service ::

[Unit]
Description=Sync initial headphone plug state

[Service]
Type=oneshot
ExecStart=/usr/bin/sync.sh
RemainAfterExit=true

[Install]
WantedBy=multi-user.target

• https://gitlab.manjaro.org/manjaro-arm/packages/community/pinebookpro-audio/-/blob/master/sync.sh ::

  
  #!/usr/bin/env sh

case "$3" in plug) amixer sset Speaker off amixer sset 'Playback Polarity' Normal ;; unplug) amixer sset 'Playback Polarity' 'R Invert' amixer sset Speaker on ;; esac ``