Comment 54 for bug 1834771

This is the thread about this bug from the alsa maillist: https://mailman.alsa-project.org/pipermail/alsa-devel/2019-November/158336.html

And this issue will be fixed if radeon, nouveau and amdgpu drivers support audio component. Now the amdgpu driver already supported audio component from kernel-5.4, so if your machine is driven by amdgpu driver (graphic card driver), you could test 5.4 kernel or ubuntu focal kernel (the kernel for 20.04). Please check amdgpu driver is in-tree driver instead of amdgpu-pro driver (proprietary driver).

For unload/reload the HD-audio driver mentioned that thread, I thought it should be (but it failed when I ran alsa unload/force-unload)
localhost:~$ alsa --help
Usage: /sbin/alsa {unload|reload|force-unload|force-reload|suspend|resume}

If someone has any idea or any log, please reply to the thread alsa-devel/2019-November/158336.html