Overheating Laptop

SYNass IT Ubuntu / Linux i-ubux at synass.net
Sun Jun 15 23:58:39 UTC 2008

On Sun, 2008-06-15 at 21:54 +0200, Detlef Lechner wrote:
> Hi svobi & Michael,
> Am Sonntag, den 15.06.2008, 19:22 +0900 schrieb Michael Sotnikov:
> > > sna at WS222:~$ cat /proc/acpi/processor/CPU0/power
> > > cat: /proc/acpi/processor/CPU0/power: No such file or directory
> > > sna at WS222:~$
> > 
> > looks like you have problems with acpi. 
> I agree. 
> In order to harden this judgement, using Midnight Commander, look into
> the directory /proc/acpi/processor/ to see if your CPU is named other
> than 'CPU0'. If so, look for a 'power' submenu and try to find there
> power states C1, C2, C3.
> > Usually it happens with "bad" bios. 
> I agree. Often a bad BIOS is the cause that the Ubuntu installer cannot
> install a proper ACPI subsystem automatically.
> > I recommend you to update firmware for your laptop first. (for 
> > example, my laptop had this kind of problem too, but 2 month ago my 
> > manufacturer fixed this problem in firmware.)
> A good advice. After that often Ubuntu has to be re-installed. 
> > 
> > To be sure you can check if all acpi-related stuff was loaded properly
> > 1. check loaded modules: lsmod | grep acpi
> > if everything ok, 
> Often other Ubunteros already have tried to get your laptop type running
> using Ubuntu and reported in the WWW about their success. Find out if
> they loaded the same kernel modules as you.
> > there should be acpi_cpufreq, and some other related 
> > modules (cpufreq_ondemand, freq_table, etc...)
> The mentioned modules are loaded in my laptop computer also. But in your
> specific computer type they may be replaced by other modules. So compare
> with another owner of your specific computer type.
> > 2. check errors during boot: dmesg | grep ACPI, any errors/warning?
> A good point. But you will need experience to interpret these error
> messages or warnings. Googling for the exact wording may help.
> > Or are some some extra (ACPI) installations needed?
> Ubuntu tries to find out all needed ACPI installations and installs
> accordingly. So the answer is: "Usually not." If an ACPI error or
> warning message in dmesg appers, then yes (or a configuration needs to
> be changed).
> > IBM Services changed the fan and its exhausts already and it still 
> > seems quite hot always in the upper 60 degrees Celsius !?
> You did not mention if this happens also when using Windows. If your T30
> stays cool when using Windows, then your Ubuntu is at fault. If your T30
> is hot when using Windows also, then some other hardware than the fan is
> likely at fault. Analyze the error messages.
> Regards, Detlef Lechner

Hi Detlef
Thanks a lot for your extensive efforts and feedback !

Yes, the T30 with its 2.4GHz CPU always runs quite hot in the
60ies ! ,-)
Especially here in the tropic !! ;-D

Well, I am unable to proof that this wasn't an issue with WinXPP
before !?

Within a very short time I am installing Ubuntu 8.04 LTS from scratch on
this system and 
will postpone further research in this matter now. 

Cheers, svobi

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