[email protected] (Amin Mesbah), 2020.09.10 (Thu) 04:09 (CEST): > On Mon Sep 7, 2020 at 5:59 AM PDT, Amin Mesbah wrote: > > >Synopsis: Thinkpad X220 High Temperature / Fan Spinning Constantly > > >Category: system > > >Environment: > > System : OpenBSD 6.7 > > Details : OpenBSD 6.7 (GENERIC.MP) #6: Thu Sep 3 14:08:18 MDT 2020 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > > > Architecture: OpenBSD.amd64 > > Machine : amd64 > > >Description: > > On a fresh install of 6.7, while under very low load, running X, i3wm, > > and vim, the fan spins constantly and audibly. The CPU temperature is > > reported as 58C. The fan is reported as spinning at around 3500rpm. > > This is with apmd running with the -A flag. > > >How-To-Repeat: > > Install OpenBSD 6.7 on a Lenovo Thinkpad X220. > > Set apmd to run at startup with the -A flag. > > Run X. > > Listen to the fan. > > >Fix: > > None > > Some potentially useful extra information: > > Today I took some time to test OpenBSD 6.6 and 6.5 on the same hardware. > For each one I installed, syspatched, set up `apmd -A`, and logged into > the default fvwm X environment. > > With 6.6 I observed the same problem with roughly equal temperature, fan > RPMs, and fan noise level. > > With 6.5, however, the fan was inaudible. Temperature hovered around 46C > and RPMs around 1900. These numbers are similar to what I see when > running Linux on the same hardware under similarly minimal load.
I seem to remember there was a thread on this. You found the right time frame - but I cannot find the thread from that time. I also seem to remember it was about meltdown/spectre mitigations. (My x220 behaves the same.) Marcus
