I am using Kubuntu
with Ubuntu 14.04 and KDE 4.13.3 on a Lenovo Thinkpad (more specific spec below).
Since some time now I am getting extreme surges in fan speed that drop off immediately after.
Most of the time theses peaks in fan speed arise every couple of minutes. This even happens when completely idle. When under heavy load the intervals narrow, but the CPU fan speed is still pulsing up and down. I captured some data on this using Psensor which might illustrate the problem:
This overshoots in the fan speed create a really unpleasant soundscape. Is there a way to prevent these peaks from happening? I would prefer a solution that works without any additional software, but I am up for anything.
I tried changing the Adaptive Thermal Management Scheme to Balanced, as suggested in this similar question, but this did not solve my problem. The fan speed still behaves as shown above.
- ThinkPad T540p
- CPU: Intel(R) Core(TM) i7-4710MQ CPU @ 2.50GHz
- UEFI BIOS Version GMET69WW (2.17) (Newest version is 2.23, but none of the newer version mentions any changes to fan behavior in the changelogs)
- Ubuntu 14.04
- KDE 4.13.3
Problem persists with
- Ubuntu 16.04
- KDE 5.5.5