No more sound, please help

Hardware Librem 5
1

pulseaudio fails to start here, please help:

Feb 21 17:19:57 pureos pulseaudio[626]: E: [pulseaudio] module-alsa-card.c: Card 'MODEM' doesn't exist: No such device
Feb 21 17:19:57 pureos pulseaudio[626]: 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.
Feb 21 17:19:57 pureos pulseaudio[626]: E: [pulseaudio] main.c: No such profile: HiFi
Feb 21 17:19:57 pureos pulseaudio[626]: E: [pulseaudio] main.c: Failed to initialize daemon due to errors while executing startup commands. Source of commands: /etc/pulse/librem5.pa

But, well, the device is present:

  $  cat /proc/asound/cards
  0 [L5             ]: Librem_5 - Librem 5
                       Librem 5
  1 [Modem          ]: Modem - Modem
                       Modem

The problem is persistent, rebooting or restarting pulseaudio leads to the same result.

2

Hmm, sorry. Found the problem. I was trying a newer kernel. Reverted to old one:

Removing linux-image-5.11.0-1-librem5 (5.11.0~rc7pureos1) ...
Installing linux-image-5.9.0-1-librem5 ...
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