http://bugzilla.kernel.org/show_bug.cgi?id=11878
Summary: fan doesn't turn off
Product: ACPI
Version: 2.5
KernelVersion: 2.6.27 - 2.6.28rc2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Thermal
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Latest working kernel version: 2.6.26.7 tested o.k.
Earliest failing kernel version: 2.6.27 - 2.6.28rc2
Distribution: Ubuntu/Independent
Problem Description:
The fan stays rotating at low speed and doesn't turn off. The dmesg difference
(+2.6.26.7 -2.6.27) is:
-[ 1.905701] thermal LNXTHERM:01: registered as thermal_zone0
-[ 1.906095] ACPI: Transitioning device [FAN] to D3
-[ 1.906285] ACPI: Thermal Zone [THRM] (50 C)
+[ 5.499848] ACPI: LNXTHERM:01 is registered as thermal_zone0
+[ 5.499848] ACPI: Thermal Zone [THRM] (56 C)
The value of /proc/acpi/thermal_zone/THRM/temperature is updated
in both cases (old and new kernel) just randomly.
Weird thing is, that changing the value of
/sys/class/backlight/acpi_video0/brightness
causes a temperature value update and the fan goes off
(as it automatically does in the 26er kernel).
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