about 50% of the time on boot my audio doesn’t work at all
Is this system dual-booting with a Windows OS?
If it is, check that the ‘Fast Startup’ feature is turned off in Windows
see this previous post for more information - Sound from speakers no sound from 3.5mm jack-audio (AMD ThinkPad E595) - #6 by nikgnomic
I suggest you use manjaro-settings-manager -m msm_kernel to install kernel v5.10
Kernel v5.9 is now End Of Life, and later kernel may support Ryzen system audio better
Please post system information:
ìnxi -Faz
and ALSA information
sudo alsa-info.sh --upload
If you can get ALSA data for both working and non-working audio states it may be possible to find differences in the data