#830 closed System Defect (invalid)

T410 - overhead problem (system temperature too high, shutting down soon)

Reported by: plluksie Owned by:
Priority: major Milestone:
Component: System Configuration Version: 10-STABLE
Keywords: overhead, temperature Cc: trac-bugs@…



I noticed heating problem on Thinkpad T410, on PC-BSD 10-STABLE-p3. If I will keep system idle, after turning off nepomuk, the parameters are following:

~% sysctl hw.acpi.thermal
hw.acpi.thermal.min_runtime: 0
hw.acpi.thermal.polling_rate: 10
hw.acpi.thermal.user_override: 0
hw.acpi.thermal.tz0.temperature: 60.0C
hw.acpi.thermal.tz0.active: -1
hw.acpi.thermal.tz0.passive_cooling: 1
hw.acpi.thermal.tz0.thermal_flags: 0
hw.acpi.thermal.tz0._PSV: 95.5C
hw.acpi.thermal.tz0._HOT: -1
hw.acpi.thermal.tz0._CRT: 100.0C
hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
hw.acpi.thermal.tz0._TC1: 5
hw.acpi.thermal.tz0._TC2: 4
hw.acpi.thermal.tz0._TSP: 600

But if I will turn on nepomuk and do anything which require more processor's power temperature quickly raises to:

hw.acpi.thermal.tz0.temperature: 95.0C
and then it jumps to
hw.acpi.thermal.tz0.temperature: 128.0C
and system is shutting down:
Nov 17 23:21:51 volkov devd: Executing 'logger -p kern.emerg 'WARNING: system temperature too high, shutting down soon!''
Nov 17 23:21:51 volkov root: WARNING: system temperature too high, shutting down soon!
Nov 17 23:22:01 volkov kernel: acpi_tz0: WARNING - current temperature (128.0C) exceeds safe limits

Laptop is "quite new" - ~2 years old. Problem didn't appear on PC-BSD 9.x branch , Windows, Linux, etc. I encountered it only on fresh PC-BSD/FreeBSD.

~% uname -a
FreeBSD volkov 10-STABLE-p3 FreeBSD 10-STABLE-p3 #19 5be16d0(stable/10): Thu Nov  7 20:29:44 EST 2013     root@avenger:/usr/obj/pcbsd-build10/fbsd-source/src/sys/GENERIC  amd64

Do you have any idea what can be the source of the problem?

Change History (1)

comment:1 Changed 22 months ago by joshms

  • Resolution set to invalid
  • Status changed from new to closed

Hey there! Sorry to hear you are having problems. There are many factors to consider about your computer. Firstly were you using a UFS file system in 9? ZFS is very memory intensive and could be increasing the heat output by the memory. What it sounds like though this is more of a CPU cooling issue, since the issue seems to appear when you put it under load.

Secondly do you have a windows partition you can test your temperature on? I'm curious to see the temperature difference after say playing a youtube video in high def for 20 minutes or so (between windows and PC-BSD). If you need a way to check your temperature in windows google speedfan and download it. It's a free utility that will give you a pretty accurate read out on all your temps.

Lastly Lenovo dropped the ball on these laptops. There is reportedly a serious design flaw with the cooling paste that was used that is causing overheating issues for all kinds of people on all kinds of OS's. Please see the attached thread of angry customers who want replacements / refunds.


So let me summarize what I would do if it was me having this issue:

  1. Install a temporary windows partition and note the temperature.
  2. Compare temperature with the temperature readings from PC-BSD
  3. If temperature is over 85 - 90 C that is plenty hot enough in my opinion to call this an overheating issue regardless of what OS you use.
  4. If you feel comfortable opening your laptop I would re-paste the CPU with arctic silver and replace the fan with a brand new one. You can order a cheap laptop replacement fan from Ebay for under $10 usually.

Please please please be careful letting your laptop run that hot. I ran a computer service center for several years and in my experience anything over 90-100 c is enough to permanently damage a computer if left unchecked. For instance every computer I own is set to shut off if it gos above 85 celsius. I'm going to close this ticket since from my research I believe there is a 99% chance this is hardware related and not software. Best of luck. Feel free to respond to this thread or send me an email @ joshms@…


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