[Bug 42858] New: thermal throttling doesn't seem to trigger on Thinkpad T420s

[Bug 42858] New: thermal throttling doesn't seem to trigger on Thinkpad T420s

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=42858

           Summary: thermal throttling doesn't seem to trigger on Thinkpad
                    T420s
           Product: Power Management
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
        AssignedTo: cpufreq@vger.kernel.org
        ReportedBy: pierre-bugzilla@ossman.eu
        Regression: No


I have a new Thinkpad T420s and I'm noticing it getting massively hot when
putting some load on the CPU. powertop shows it spending all its time in Turbo
mode for both cores. Thermal reporting shows it hovering around 90° with the
fan on full. It hasn't been throttled even once though:

./cpu0/thermal_throttle/core_power_limit_count:0
./cpu0/thermal_throttle/core_throttle_count:0
./cpu0/thermal_throttle/package_power_limit_count:0
./cpu0/thermal_throttle/package_throttle_count:0
./cpu1/thermal_throttle/core_power_limit_count:0
./cpu1/thermal_throttle/core_throttle_count:0
./cpu1/thermal_throttle/package_power_limit_count:0
./cpu1/thermal_throttle/package_throttle_count:0
./cpu2/thermal_throttle/core_power_limit_count:0
./cpu2/thermal_throttle/core_throttle_count:0
./cpu2/thermal_throttle/package_power_limit_count:0
./cpu2/thermal_throttle/package_throttle_count:0
./cpu3/thermal_throttle/core_power_limit_count:0
./cpu3/thermal_throttle/core_throttle_count:0
./cpu3/thermal_throttle/package_power_limit_count:0
./cpu3/thermal_throttle/package_throttle_count:0

This doesn't really seem safe for the CPU or my lap. :/

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[Bug 42858] thermal throttling doesn't seem to trigger on Thinkpad T420s

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=42858





--- Comment #1 from Pierre Ossman <pierre-bugzilla@ossman.eu>  2012-03-05 07:39:54 ---
I also noticed this in dmesg:

[ 1510.425741] thinkpad_acpi: unknown possible thermal alarm or keyboard event
received
[ 1510.425752] thinkpad_acpi: unhandled HKEY event 0x6040
[ 1510.425757] thinkpad_acpi: please report the conditions when this event
happened to ibm-acpi-devel@lists.sourceforge.net

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[Bug 42858] thermal throttling doesn't seem to trigger on Thinkpad T420s

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=42858


Len Brown <lenb@kernel.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO
                 CC|                            |acpi-bugzilla@lists.sourcef
                   |                            |orge.net




--- Comment #2 from Len Brown <lenb@kernel.org>  2012-03-06 02:24:16 ---
what kernel version  (uname -a)

please show either

# grep . /proc/acpi/thermal*/*/

or

# grep . /sys/class/thermal/*/*

to show us what the trip points and current temperatures are.

if you booth without the thinkpad_acpi driver,
does the system behave differently?

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[Bug 42858] thermal throttling doesn't seem to trigger on Thinkpad T420s

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=42858





--- Comment #3 from Pierre Ossman <pierre-bugzilla@ossman.eu>  2012-03-06 06:45:30 ---
~
[drzeus@mjolnir]$ uname -a
Linux mjolnir.ossman.eu 3.2.7-1.fc16.x86_64 #1 SMP Tue Feb 21 01:40:47 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux

~
[drzeus@mjolnir]$ grep . /proc/acpi/thermal*/*/
grep: /proc/acpi/thermal*/*/: No such file or directory

~
[drzeus@mjolnir]$ grep . /sys/class/thermal/*/*
/sys/class/thermal/cooling_device0/cur_state:0
/sys/class/thermal/cooling_device0/max_state:17
/sys/class/thermal/cooling_device0/type:Processor
/sys/class/thermal/cooling_device1/cur_state:0
/sys/class/thermal/cooling_device1/max_state:17
/sys/class/thermal/cooling_device1/type:Processor
/sys/class/thermal/cooling_device2/cur_state:0
/sys/class/thermal/cooling_device2/max_state:17
/sys/class/thermal/cooling_device2/type:Processor
/sys/class/thermal/cooling_device3/cur_state:0
/sys/class/thermal/cooling_device3/max_state:17
/sys/class/thermal/cooling_device3/type:Processor
/sys/class/thermal/cooling_device4/cur_state:6
/sys/class/thermal/cooling_device4/max_state:15
/sys/class/thermal/cooling_device4/type:LCD
/sys/class/thermal/thermal_zone0/mode:enabled
/sys/class/thermal/thermal_zone0/passive:0
/sys/class/thermal/thermal_zone0/temp:43000
/sys/class/thermal/thermal_zone0/trip_point_0_temp:97000
/sys/class/thermal/thermal_zone0/trip_point_0_type:critical
/sys/class/thermal/thermal_zone0/type:acpitz


I'll test without thinkpad_acpi and see what happens.

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[Bug 42858] thermal throttling doesn't seem to trigger on Thinkpad T420s

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https://bugzilla.kernel.org/show_bug.cgi?id=42858





--- Comment #4 from Pierre Ossman <pierre-bugzilla@ossman.eu>  2012-03-17 11:30:50 ---
The problem remains even without thinkpad_acpi. :/

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[Bug 42858] thermal throttling doesn't seem to trigger on Thinkpad T420s

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https://bugzilla.kernel.org/show_bug.cgi?id=42858


Zhang Rui <rui.zhang@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rui.zhang@intel.com




--- Comment #5 from Zhang Rui <rui.zhang@intel.com>  2012-03-19 08:54:58 ---
would you please check if this patch helps?

http://marc.info/?l=linux-acpi&m=132854533918079&w=2

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[Bug 42858] thermal throttling doesn't seem to trigger on Thinkpad T420s

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https://bugzilla.kernel.org/show_bug.cgi?id=42858


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alan@lxorguk.ukuu.org.uk
         AssignedTo|cpufreq@vger.kernel.org     |rjw@sisk.pl




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