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On a newer ThinkPad — X240 (Haswell), battery life under FreeBSD -CURRENT is close to 9 hours. Doesn't resume from suspend though. But yours should! I know people got suspend/resume working on 20 and 30 ThinkPads.

Here's my post about the laptop: https://unrelenting.technology/articles/freebsd-on-the-think... — not fully up to date though: I'm using ZFS only now, with boot environments (no GRUB required, it's fully integrated into the FreeBSD EFI loader), and powerd++ https://github.com/lonkamikaze/powerdxx

Brightness works great with Intel graphics. I haven't been able to adjust brightness using the nvidia driver (on an iMac)



Thanks for your blog post. I'm going to try the power management things you did for your laptop and see how they work for my model.

I too use root on ZFS. Boot environments and using powerd++ are things I've been meaning to but have not yet got around to.


Honestly I'm not seeing any improvement from powerd++, normal powerd worked fine for this dual-core + HT processor.




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