dmesg: "unknown thermal alarm received"

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[2498348.222246] thinkpad_acpi: EC reports that Thermal Table has changed
[2519312.188535] thinkpad_acpi: THERMAL ALERT: unknown thermal alarm received
[2519312.204416] thinkpad_acpi: temperatures (Celsius): 40 0 0 0 0 0 0 0
[2519312.204437] thinkpad_acpi: unhandled HKEY event 0x6000
[2519312.204442] thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
[2519318.653302] thinkpad_acpi: THERMAL ALERT: unknown thermal alarm received
[2519318.669105] thinkpad_acpi: temperatures (Celsius): 39 0 0 0 0 0 0 0
[2519318.669124] thinkpad_acpi: unhandled HKEY event 0x6000
[2519318.669129] thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx

There was no particular "thermal conditions" that I'm aware of
when this happened.

The laptop is a 2010 Lenovo T510 widescreen.  /proc/cpuinfo is:

processor  : 0
vendor_id  : GenuineIntel
cpu family : 6
model	     : 37
model name   : Intel(R) Core(TM) i7 CPU       M 620  @ 2.67GHz
stepping     : 5
cpu MHz	       : 1199.000
cache size     : 4096 KB
physical id    : 0
siblings : 4
core id	   : 0
cpu cores  : 2
apicid	     : 0
initial apicid : 0
fpu	       : yes
fpu_exception  : yes
cpuid level    : 11
wp    	       : yes
flags	       	 : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt aes lahf_lm ida arat dts tpr_shadow vnmi flexpriority ept vpid
bogomips	 : 5320.31
clflush size	 : 64
cache_alignment	 : 64
address sizes	 : 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		  : 37
model name	  : Intel(R) Core(TM) i7 CPU       M 620  @ 2.67GHz
stepping	  : 5
cpu MHz		    : 1199.000
cache size	    : 4096 KB
physical id	    : 0
siblings : 4
core id	   : 0
cpu cores  : 2
apicid	     : 1
initial apicid : 1
fpu	       : yes
fpu_exception  : yes
cpuid level    : 11
wp    	       : yes
flags	       	 : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt aes lahf_lm ida arat dts tpr_shadow vnmi flexpriority ept vpid
bogomips	 : 5319.69
clflush size	 : 64
cache_alignment	 : 64
address sizes	 : 36 bits physical, 48 bits virtual
power management:

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		  : 37
model name	  : Intel(R) Core(TM) i7 CPU       M 620  @ 2.67GHz
stepping	  : 5
cpu MHz		    : 1199.000
cache size	    : 4096 KB
physical id	    : 0
siblings : 4
core id	   : 2
cpu cores  : 2
apicid	     : 4
initial apicid : 4
fpu	       : yes
fpu_exception  : yes
cpuid level    : 11
wp    	       : yes
flags	       	 : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt aes lahf_lm ida arat dts tpr_shadow vnmi flexpriority ept vpid
bogomips	 : 5319.71
clflush size	 : 64
cache_alignment	 : 64
address sizes	 : 36 bits physical, 48 bits virtual
power management:

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		  : 37
model name	  : Intel(R) Core(TM) i7 CPU       M 620  @ 2.67GHz
stepping	  : 5
cpu MHz		    : 1199.000
cache size	    : 4096 KB
physical id	    : 0
siblings : 4
core id	   : 2
cpu cores  : 2
apicid	     : 5
initial apicid : 5
fpu	       : yes
fpu_exception  : yes
cpuid level    : 11
wp    	       : yes
flags	       	 : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt aes lahf_lm ida arat dts tpr_shadow vnmi flexpriority ept vpid
bogomips	 : 5319.71
clflush size	 : 64
cache_alignment	 : 64
address sizes	 : 36 bits physical, 48 bits virtual
power management:

HTH,

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
New in Fedora 11: Fedora Windows cross-compiler. Compile Windows
programs, test, and build Windows installers. Over 70 libraries supprt'd
http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw

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