Arch Linux

smccully

Member

Registered: 2014-10-15

Posts: 3

Change CPU temperature threshold

Is it possible to change or set the temperature threshold for the cpu clock throttle?

    Feb 22 13:04:28 -toshiba kernel: CPU1: Core temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU0: Core temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU4: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU3: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU5: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU6: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU2: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU7: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU0: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU1: Package temperature above threshold, cpu clock throttled (total events = 1)
    Feb 22 13:04:28 -toshiba kernel: CPU1: Core temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU7: Package temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU0: Core temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU4: Package temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU3: Package temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU5: Package temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU6: Package temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU2: Package temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU0: Package temperature/speed normal
    Feb 22 13:04:28 -toshiba kernel: CPU1: Package temperature/speed normal

eduncan911

Member

Registered: 2015-05-02

Posts: 93

Website

Re: Change CPU temperature threshold

Ran into the same problems.

Currently going through this article: https://wiki.archlinux.org/index.php/CP … cy_scaling

grandtheftjiujitsu

Member

Registered: 2013-07-27

Posts: 91

Re: Change CPU temperature threshold

What produced that output?  What is during boot?  Are you running a Toshiba computer / motherboard?  If so, you might be able to adjust the thermal threshold in the BIOS settings.

eduncan911

Member

Registered: 2015-05-02

Posts: 93

Website

Re: Change CPU temperature threshold

For me, it shows up in dmesg whenever something intensive happens (e.g. building a package).

It also shows under multi-target login (console only) and floods the screen/prompt.

I have a Lenovo Helix tablet (Ivy Bridge). They run hot, and the bios handles downclocking.

I don't want the kernel to do anything but since 3.17 kernel they enforce this. 

I did not have success with that article above. Setting it to Performance or Powersaver did nothing to squalch it.

grandtheftjiujitsu

Member

Registered: 2013-07-27

Posts: 91

Re: Change CPU temperature threshold

Hmmm I could maybe see overheating while making a package in that case I might suspect a slouching fan (see here). But overheating just while booting is definitely suspect.  Using lm-sensors (previous link) might help though in finding out if it is actually an overheating issue or just getting reported that way.  There is also this thread and this one which seem to have the same issue.  The first recommends standard cleaning and contacting the manufacturer.

Last edited by grandtheftjiujitsu (2015-06-23 03:59:09)

eduncan911

Member

Registered: 2015-05-02

Posts: 93

Website

Re: Change CPU temperature threshold

Works fine booted under Windows.  The tablet is known to run "hot", but well under TJ max.  RealTemp in Windows shows it hoving around 49C idle and up to 80C, with well within limits and matches all other Lenovo Helix's posting their temp results online.  Hot, yes, but acceptable.

When I get time I'll go back in and view the sensors.  I suspect one or two things:

* Sensors are outta wack, giving false numbers.
* The kernel driver is too conservative and it thinks an 70C temp is bad or something.  <- harder to prove.

The BIOS handles everything fine.  When I disable PState in Windows (force everything to 100), temps range from 62C to 81C at all times.  Still within specifications.  This is BIOS-controlled cooling controlling the fans.

^- this is what I want for Arch.  Controlling PState is great, but if there's a problem I want it to get out of the way and just let the BIOS handle things.  Don't force it.

I'm quite surprised Arch attempts to handle this on its own automagically without some special configuration or wiki page to set it up.

Last edited by eduncan911 (2015-06-23 05:56:17)

jwhendy

Member

Registered: 2010-04-01

Posts: 621

Re: Change CPU temperature threshold

I hope this isn't too old to comment on... did you ever find a resolution? I'm having similar issues on an HP, and had similar issues on a different HP last year (Arch forums post about that). I think the former computer was possibly hardware related, but I came due for trade-in on my work lease, so I never found out. This one logs overheating events, but isn't hard killing itself. Still annoying and would like to figure out what's causing it.