I recently migrated to Linux on my A485 Thinkpad with a 2500u Ryzen and have been trying to improve its battery life.
Initially I tried using TLP, which many people online seem to be recommending. It seems like a great tool with great configuration options, but looking around the config I noticed most of the tweakable values seemed to be specifically for Intel chips.
I still figured I'd give it a shot and checked out some stats by monitoring powertop.
Using TLP powerstat reported a discharge rate between 6-7 watts when idle (Linux Mint, Cinnamon). Making recommended tweaks (mostly just setting stuff on Battery mode to powersave or equivalent) I couldn't really make a difference on the reported discharge rate.
I then switched over to auto-cpufreq and by default the idle discharge rate went as low as 5.7 watts, so it seems to me that auto-cpufreq is able to scale the cpu's state a bit better.
Of course I realize that these stats are not measured too accurately and I don't want to seem that I'm making a statement on which of these tools is better, I was simply wondering if anyone had noticed something simliar or had more knowledge regarding these tools and their compatibility with AMD cpus.
Overall, with these tools battery life on Linux seems to be at least 0,5h better than on win10!
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