Librem 5 audio does not work

Describe your issue

Audio does not work at all on librem 5.

What's the expected behaviour?

audio device are found, pulseaudio or alsa works and recognises devices, sounds output works and volume is changeable

What's the current behaviour?

Sound devices not found or usable.

How to reproduce your issue?

Install pmOS on librem 5. Go to settings > sounds, see not devices found.

What device are you using?

purism librem 5.

On what postmarketOS version did you encounter the issue?

• edge (master branch)
• stable (v20.05 branch)

On what environment did you encounter the issue?

Phone environments

• Phosh
• Plasma Mobile
• Sxmo

Other

• No environment
• GNOME
• KDE Plasma
• Kodi
• MATE
• Shelli
• Sway
• Weston
• Xfce4
• fbkeyboard
• i3wm

How did you get postmarketOS image?

• from https://images.postmarketos.org
• I built it using pmbootstrap
• It was preinstalled on my device

What's the build date of the image? (in yyyy-mm-dd format)

Additional information

dmesg output shows:

[    1.302852] Asymmetric key parser 'x509' registered
[    1.302884] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[    1.309733] clk: failed to reparent audio_pll1 to sys1_pll_800m: -22
[    1.309748] clk: failed to reparent audio_pll2 to arm_pll_out: -22
[    1.312042] SoC: i.MX8MQ revision 2.1

pulseaudio output shows:

samuel@l5 ~ $ pulseaudio 
E: [pulseaudio] module-alsa-card.c: Failed to find a working profile.
E: [pulseaudio] module.c: Failed to load module "module-alsa-card" (argument: "device_id="MODEM" name="platform-sound-wwan" card_properties="device.description=Modem""): initialization failed.
E: [pulseaudio] main.c: No such profile: HiFi
E: [pulseaudio] main.c: Failed to initialize daemon due to errors while executing startup commands. Source of commands: /etc/pulse/librem5.pa