No sound on stripped down Ubuntu 20.04 LTS with Enlightenment

I have a refurbished Chromebook with the Enlightenment window manager in place of GNOME or whatever had been the default before removing a lot of GNOME stuff, but no sound.

Code:$ grep -i pretty /etc/os-release
PRETTY_NAME="Ubuntu 20.04.1 LTS"

$ apt-cache policy enlightenment | head -n 2
enlightenment:
Installed: 0.23.1-4I presume there are some manual changes which must be made in order to have sound at all. Enlightenment's sound mixer widget shows no devices. However, there seem to be sound drivers loaded:

Code:$ lspci -knn | grep -i -a2 audio
Kernel driver in use: i915
Kernel modules: i915
00:03.0 Audio device [0403]: Intel Corporation Broadwell-U Audio Controller [8086:160c] (rev 08)
Subsystem: Intel Corporation Broadwell-U Audio Controller [8086:160c]
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
--
Kernel driver in use: mei_me
Kernel modules: mei_me
00:1b.0 Audio device [0403]: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0] (rev 03)
Subsystem: Intel Corporation Wildcat Point-LP High Definition Audio Controller [8086:9ca0]
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intelThat output shows there is probably a sound driver running. What else is needed? I have searched quite a bit but the most common recipe about Alsa has not started any sound.

Code:$ sudo alsa force-reload
Unloading ALSA sound driver modules: snd-hda-codec-hdmi snd-hda-codec-realtek snd-hda-codec-generic snd-hda-intel snd-intel-dspcfg snd-hda-codec snd-hda-core snd-hwdep snd-pcm snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-seq-device snd-timer (failed: modules still loaded: snd-hda-codec-hdmi snd-hda-codec-realtek snd-hda-codec-generic snd-hda-intel snd-intel-dspcfg snd-hda-codec snd-hda-core snd-hwdep snd-pcm snd-timer).
Loading ALSA sound driver modules: snd-hda-codec-hdmi snd-hda-codec-realtek snd-hda-codec-generic snd-hda-intel snd-intel-dspcfg snd-hda-codec snd-hda-core snd-hwdep snd-pcm snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-seq-device snd-timer.

$ apt-cache policy pulseaudio | head -n 2
pulseaudio:
Installed: 1:13.99.1-1ubuntu3.7If I try running pavucontrol the window never finishes loading and instead reports "Establishing connection to PulseAudio. Please wait."

Edit:

Code: aplay /usr/lib/libreoffice/share/gallery/sounds/apert.wav
ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave