Fw: 2.6.11-rc4 doubles CPU temperature

Fw: 2.6.11-rc4 doubles CPU temperature

[Ben Castricum]

For some weird reason, 2.6.11-rc4 up to the current BK tree about doubles my
CPU temperature from 20 degrees Celcius to 40 while everything else is
unchanged (load/processes/config). The system does seem a bit more sluggish,
but that may just be a feeling. A cat /proc/cpu gives me

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 6
model name      : Celeron (Mendocino)
stepping        : 5
cpu MHz         : 475.100
cache size      : 128 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 mmx fxsr
bogomips        : 940.03

and my .config can be found at

http://www.bencastricum.nl/.config

I haven't got a clue on how to analyse this problem so I really appreciate
any info or suggestions I get. Please help me.

Cheers,
Ben

 

Re: 2.6.11-rc4 doubles CPU temperature

[Jean Delvare]

Hi Ben,

Ben Castricum wrote:
> For some weird reason, 2.6.11-rc4 up to the current BK tree about 
> doubles my CPU temperature from 20 degrees Celcius to 40 while
> everything else is unchanged (load/processes/config). The system
> does seem a bit more sluggish, but that may just be a feeling. 
> (...)
> I haven't got a clue on how to analyse this problem so I really appreciate
> any info or suggestions I get. Please help me.

If you have an Asus AS99127F chip, the value reported before in sysfs 
were not correct, the new ones are.

http://archives.andrew.net.au/lm-sensors/msg29730.html

40 degrees C is a fairly reasonable temperature for a CPU diode, there's 
nothing to be afraid of. At any rate it's more reasonable than the 
incredibly low 20 degrees C temperature you had before, as Robert 
Hancock noticed in an earlier post.

Hope that helps,
-- 
Jean Delvare

Re: 2.6.11-rc4 doubles CPU temperature

[Ben Castricum]

Hi Jean,

> If you have an Asus AS99127F chip, the value reported before in sysfs were 
> not correct, the new ones are.

This is indeed the case. To be sure I ran unixbench on rc3 and the just 
released 2.6.11 en the results were nearly identical. So the temperature 
increase does not seems to indicate that the CPU is doing more.

> 40 degrees C is a fairly reasonable temperature for a CPU diode, there's 
> nothing to be afraid of. At any rate it's more reasonable than the 
> incredibly low 20 degrees C temperature you had before, as Robert Hancock 
> noticed in an earlier post.

Then I have proabably been measuring it wrong from start. I will upgrade 
lm_sensors and try again.

Thanks,
Ben