4.18.0-240.22.1.el8_3.x86_64
Sound works as expected.

4.18.0-305.3.1.el8.x86_64
only “dummy output” shows up under the Sound Preferences on the desktop.

I guess there’s a kernel bug somewhere that’s causing the driver for that soundcard to not load?

The lshw command (when running kernel subversion 240.22.1, i.e. the “old kernel”) tells me that it has this soundcard:

*-multimedia
description: Multimedia audio controller
product: Sunrise Point-LP HD Audio
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
logical name: card0
logical name: /dev/snd/controlC0
logical name: /dev/snd/hwC0D0
logical name: /dev/snd/hwC0D2
logical name: /dev/snd/pcmC0D0c
logical name: /dev/snd/pcmC0D0p
logical name: /dev/snd/pcmC0D10p
logical name: /dev/snd/pcmC0D2c
logical name: /dev/snd/pcmC0D3p
logical name: /dev/snd/pcmC0D7p
logical name: /dev/snd/pcmC0D8p
logical name: /dev/snd/pcmC0D9p
version: 21
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=snd_hda_intel latency2
resources: irq:128 memory:df1a8000-df1abfff memory:df180000-df18ffff