FS#39005 - [linux] Strange / dangerous fan policy since Linux 3.13.4
Attached to Project:
Arch Linux
Opened by Rok kralj (technolog) - Sunday, 23 February 2014, 09:01 GMT
Last edited by Tobias Powalowski (tpowa) - Monday, 16 June 2014, 18:44 GMT
Opened by Rok kralj (technolog) - Sunday, 23 February 2014, 09:01 GMT
Last edited by Tobias Powalowski (tpowa) - Monday, 16 June 2014, 18:44 GMT
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Details
My fans are acting strangely since yesterday's upgrade.
Behaviour on 3.12: Fans running pretty much all the time on 30%, temperatures 30-40 C. Behaviour on 3.13: Fans are idle until temperatures rise to 84 C (this is hot!), then ramp up to 75% for a few seconds until temperatures drop to 72 C. Then they idle again. This seems pretty dangerous, because the threshold of 84 degrees is just too high. I'd be fine with 60. Laptop: HP ProBook 4510s |
This task depends upon
fans don't kick in until 80 c , and ramp up (noisy)
Laptop: mackbook air 2013
don't know if someone reported it .
Except the occasional smell of burnt plastic and 1/2 of a normal battery life.
TL;DR: I am not sure this is even a bug.
Some additional information might be helpful.
Do you run the fancontrol script, do you rely on automatic fan speed control, or do you have some other means to control the fan speed (and thus the system temperature) ?
What is the output you get with the "sensors" command, and did it change since 3.12 ?
Do you see anything notable in the kernel log ?
https://bugzilla.kernel.org/show_bug.cgi?id=71711
hope someone respond ;)