I can't answer your question about battery life according to the
parameters, I did not test that.
If you're running RavenRidge on Ubuntu, you will have to fight the CPU
(Ryzen's CPU lock ups:
https://bugzilla.kernel.org/show_bug.cgi?id=196683 ) and also amdgpu,
because they're still working on it.
Did you tried:
idle=nomwait
as kernel-parameter via grub?
It fixes CPU-related freezes for me with the Ryzen 2500U.
In the case you ran into amdgpu related freezes, try:
amdgpu.audio=0
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Had this on my A315 too, but I returned it to the vendor. Seems to be an
UEFI-Bug, because it doesn't happened with my Ryzen 2500U from HP. Could
also be related to that Ryzen/Radeon 535 combination (Vega/CGN 3).
On Grub-Menu press E and add "pci=noacpi" as kernel-parameter (where normally
"quite
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