https://bugzilla.kernel.org/show_bug.cgi?id=59571
Summary: CPU overheating on Dell XPS L502x laptop
Product: ACPI
Version: 2.5
Kernel Version: 3.9.5-1-ARCH
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Processor
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Created an attachment (id=104261)
--> (https://bugzilla.kernel.org/attachment.cgi?id=104261)
The names of files explain themselves
This is Dell XPS L502x laptop with Intel i7 Quad-Core Sandybridge CPU. For no
particular reason, the CPU gets full power-horse working and overheating in a
random way, which causes the fan to spin crazily with huge noise. However, the
temperature doesn't cool down that much, instead the computer shuts down itself
sometimes after it reaches the critical point of 100 degree Celsius.
It seems that the intel_pstate driver built-in the kernel is buggy. And
observed solution from practical experience is to reboot or suspend the machine
to cool it down a little bit. Looks like there is a weird gap in the algorithm
that controls the CPU frequency scaling job.
There is no regular behavior observed yet. But this CPU overheating problem
does exist. Don't know what causes it to do heavy computing and overheating.
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