[Trac-bugs] [PC-BSD Trac] #830: T410 - overhead problem (system temperature too high, shutting down soon)

PC-BSD trac at pcbsd.org
Sun Nov 17 21:36:50 PST 2013

#830: T410 - overhead problem (system temperature too high, shutting down soon)
 Reporter:  plluksie               |      Owner:
     Type:  System Defect          |     Status:  new
 Priority:  major                  |  Milestone:
Component:  System Configuration   |    Version:  10-STABLE
 Keywords:  overhead, temperature  |
  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

 ~% 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-

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

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

Ticket URL: <http://trac.pcbsd.org/ticket/830>
PC-BSD <http://trac.pcbsd.org>
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