I don't know whether this is pertinent, but I have a Lenovo X1 Carbon (gen 4 I think) which ran the fan at full speed under Linux. A bios update solved this problem. I have converted to OpenBSD (6.6 stable) and the problem has not reappeared. It might be worth checking with Lenovo to see if a similar problem/solution exists for your machine. Bios updates are easy to install on Thinkpads.
Dave Raymond On 11/23/19, Jonathan Thornburg <jthorn4...@gmail.com> wrote: > In <https://marc.info/?l=openbsd-misc&m=157417460803560&w=1>, > Dave Trudgian <dave () trudgian ! net> writes > [[6.6 or a recent snapshot, Thinkpad T430]] >> Under OpenBSD with the system sitting idle at a GUI, WiFi active, 50% >> brightness I see ~15W power draw from the battery. This is with `apmd >> -A` and the output of `apm` showing that it is throttled to 1200MHz. >> The CPU fan is running at a constant low speed. > > On a Thinkpad T530 (= similar hardware except for 14" --> 15.4" screen) > running 6.5-stable (amd64), also with WiFi active and the system sitting > idle at a GUI, I see a power draw of ~20W/10W with the screen at max/min > brightness, so overall very similar to what Dave Trudgian sees. I've > never tried a non-OpenBSD OS on this hardware. > > -- > -- "Jonathan Thornburg [remove -color to reply]" > <jthorn4...@gmail-pink.com> > "He wakes me up every morning meowing to death because he wants to go > out, and then when I open the door he stays put, undecided, and then > glares at me when I put him out" > -- Nathalie Loiseau (French minister for European Affairs, > explaining why she named her cat "Brexit") > > -- David J. Raymond david.raym...@nmt.edu http://physics.nmt.edu/~raymond
