https://bugzilla.kernel.org/show_bug.cgi?id=187311
Bug ID: 187311
Summary: thinkpad x60:Thermal shutdown
Product: ACPI
Version: 2.5
Kernel Version: 4.9-rc2
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Processor
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 243951
--> https://bugzilla.kernel.org/attachment.cgi?id=243951&action=edit
thermal zone dump
Thinkpad x60 dmesg is showing
[14049.733423] thinkpad_acpi: THERMAL EMERGENCY: a sensor reports something is
extremely hot!
This eventually causes thermal shutdown.
Thinkpad x60 has a regression compared to v4.8-rc1 where CPU was forced to run
at lower frequency with some stress workload like kernel compile.
With 4.8-rc1
.....................
The bios_limit is changed with high temperature
/sys/devices/system/cpu/cpu0/cpufreq/bios_limit:1000000
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq:1833000
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq:1000000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq:1000000
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq:1000000
------------
4.9-rc2
The BIOS limit always stays high irrespective of temperature.
sudo watch cat /proc/acpi/ibm/thermal
/sys/devices/system/cpu/cpu0/cpufreq/bios_limit
/sys/devices/virtual/thermal/thermal_zone1/temp
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
temperatures: 98 49 -128 85 28 -128 28 -128 49 58 -128 -128 -128
-128 -128 -128
1833000
95000
1833000
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