Bug 15229 (Beyo)

Summary: Upgrade from Suse 11.1 to 11.2 with new kernel causes Acer Aspire laptop to overheat
Product: ACPI Reporter: Sebastian Szwarc (seba.szwarc)
Component: Power-ThermalAssignee: acpi_power-thermal
Status: CLOSED INSUFFICIENT_DATA    
Severity: blocking CC: acpi-bugzilla, akpm, rjw, seba.szwarc
Priority: P1    
Hardware: All   
OS: Linux   
URL: http://groups.google.com/group/linux.kernel/browse_thread/thread/2d39dd5eb279d459/582a343950998a3b?lnk=gst&q=acer+overheating#582a343950998a3b
Kernel Version: 2.6.31-12 Subsystem:
Regression: Yes Bisected commit-id:

Description Sebastian Szwarc 2010-02-04 20:22:29 UTC 
After upgrade from suse 11.1 to 11.2 there is no fan control available under linux which causes acer aspire 5315 and as far as I know other laptops from aspire series to overeheat.
The same aply to kernel 2.6.33-r5
on standard and pae kernel on opensuse 11.1 everything is fine.
Comment 1 Andrew Morton 2010-02-04 20:35:54 UTC 
Marked as a regression.
Comment 2 Rafael J. Wysocki 2010-02-04 20:38:38 UTC 
openSUSE 11.1 was based on 2.6.27.  Any chance to identify the first major kernel release the problem was present in?
Comment 3 Sebastian Szwarc 2010-02-04 20:41:02 UTC 
I will try, but previously I had to go hospital so didn't have time to do this.
I only checked 2.6.29 kernel-default on my laptop and it still causes overheat.
I'll try to do more in weekend.
Comment 4 Sebastian Szwarc 2010-02-06 13:11:33 UTC 
2.6.29-114 seems little better but temperature seems to increase but more slowly.

results of:

1.acpi -t
 Battery 1: charged, 100%
     Thermal 1: ok, 40.0 degrees C 

(This is false result,showing constantly 40 degrees no matter how temp changes)

2.acpi -V

 Battery 1: charged, 100%
     Thermal 1: ok, 40.0 degrees C
  AC Adapter 1: on-line 

3.sensors 

acpitz-virtual-0
Adapter: Virtual device
temp1:       +40.0°C  (crit = +100.0°C)                  

coretemp-isa-0000
Adapter: ISA adapter
Core 0:      +42.0°C  (high = +100.0°C, crit = +100.0°C)  

I don't see /proc/acpi/fan directory.
In /proc/acpi/thermal_zone/TZ01/cooling_mode result -> <setting not supported>
Comment 5 Sebastian Szwarc 2010-02-07 15:19:15 UTC 
Cannot find kernel 2.6.28 in any opensuse repo.
Cannot compile from source due to overheat.
Comment 6 Sebastian Szwarc 2010-02-08 18:58:12 UTC 
I give up. Switching to XP - only valuable solution.