https://bugzilla.kernel.org/show_bug.cgi?id=20242
Summary: Thermal zone sensor reports 0°C, fan turns off, system
overheats till it dies.
Product: ACPI
Version: 2.5
Kernel Version: 2.6.32 upwards
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Thermal
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: Yes
Created an attachment (id=33462)
--> (https://bugzilla.kernel.org/attachment.cgi?id=33462)
acpidump output
After a random uptime the thermal zone will report 0°C system temperature.
The fan immediately turns off.
The system will halt semiautomatically at above 110°C.
This behavior was introduced between Kernel versions 2.6.31 and 2.6.32. It is
persistent up to 2.6.36-rc6 and was introduced before or with commit
b963bd39c9000328f6ce4f12aa52abbb0c68ee91. (I have started testing using “git
bisect”, but as the time to thermal zone loss is arbitrary and can range from 5
Minutes to more than a week, I have difficulties marking any commit as good.)
No dependency on other conditions could be identified so far. Trying random
kernel boot flags from other problem descriptions (e.g. acpi_osi,
acpi.power_nocheck, noapic and nolapic) did not improve the situation.
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