[ltp] CPU running ??? but why????

[Arno Trautmann]

Florian Reitmeir wrote:
> On Sun, 08 Jun 2008, Arno Trautmann wrote:
> 
>> Florian Reitmeir wrote:
>>> On Sat, 07 Jun 2008, Peter F. Patel-Schneider wrote:
>>>
>>>> As far as I know, this is an unexplained phenomenon that has been around
>>>> for at least a year now.  My Lenovo T60p exhibits this behaviour
>>>> sometimes, but not all the time.  Even more strangely, the aberrant
>>>> behaviour comes and goes - for a few days it happens quite reqularly,
>>>> then there is no problem for weeks on end.
>>>>
>>>> Several people, myself included, have asked in various fora about the
>>>> problem, including the powertop mailing list, accessible at
>>>>   http://www.bughost.org/mailman/listinfo/power
>>>> see   http://www.bughost.org/pipermail/power/2007-May/000337.html  
>>>> for the first report that I can find.  I just noticed a recent report 
>>>> on
>>>> the problem
>>>>   http://www.bughost.org/pipermail/power/2008-June/001371.html
>>>>
>>>> So what is causing the problem?  The guessing, and as far as I know it
>>>> is only guessing, is that some DMA activity is causing the wakeups, but
>>>> I don't even know enough about the situation to figure out whether
>>>> explanation makes any sense.  Even if this is the case, I haven't seen
>>>> any hints on how to attempt to fix the problem, or even which of the
>>>> many devices built in to my T60p is the source.  I don't even know how
>>>> widespread the problem is.
>>>>
>>>> All in all, quite frustrating.
>>> just run powetop in one terminal
>>> and run an other terminal in which you remove kernel modules, one by one.
>>>
>>> typical these kernel modules first:
>>> 	- usb
>>> 	- firewire
>>> 	- sound hardware
>>> 	- yenta socket
>>>
>>> take your time, if its a hardware problem you should be able to debug it, in
>>> about 30 mins.
>> That sounds good? but I don?t have any idea how to do this? I?m quite  
>> new to linux, so could you give me some concrete commandos or a page  
>> where I can find some examples? I would be very happy if I could track  
>> it down on this way!
> ok

[…]

> then.. just unload modules, and look at powertop.

ok, thanks, but a friend helped me already. Sadly, I couldn’t find a 
modul that would solve the problem. I will try some more tomorrow, but 
at the moment I’m fine – after restarting again :(

Arno