[Bugme-new] [Bug 9227] New: Wrong trip points + unable to turn on cooling device

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Thu Oct 25 13:27:20 PDT 2007


http://bugzilla.kernel.org/show_bug.cgi?id=9227

           Summary: Wrong trip points + unable to turn on cooling device
           Product: ACPI
           Version: 2.5
     KernelVersion: 2.6.22-14-generic
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Thermal
        AssignedTo: acpi_power-thermal at kernel-bugs.osdl.org
        ReportedBy: lsmaneuf at orange.fr


Most recent kernel where this bug did not occur:
Distribution:Ubuntu gutsy ( same bugg on ubuntu feisty and pardus )
Hardware Environment: Desktop HP pavillon a629.fr / AMD Athlon(tm) XP2600+ /
Bios 3.08
Software Environment:
Problem Description:

Trip points are wrong : 
cat /proc/acpi/thermal_zone/*/*
0 - Active; 1 - Passive
<polling disabled>
state:                   passive 
temperature:             39 C
critical (S5):           100 C
passive:                 -248 C: tc1=4 tc2=3 tsp=60 devices=CPU0 
active[0]:               -266 C: devices= FAN

and an error is printed in the log files every 6 seconds : 
ACPI: Unable to turn cooling device [debcbf18] 'on'

With previous kernell I "fix" the issue by overwriting the trip points :
echo -n "100:0:90:60:0" > /proc/acpi/thermal_zone/THRM/trip_points
but it is no more possible with this kernell.

I can run kernell with acpi=off, but then the power shut down is not working.

The message disappear if I kill thermal: sudo rmmod thermal.

I will provide results of acpidump and dmidecode ( running with acpi=off ) ...
when I'll found how to do it.  

Steps to reproduce:


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