On mar., 2010-11-16 at 19:33 +0100, Florian wrote:
> > Just to be sure, is the battery installed in the system or do you run
> > from AC without battery?
> >
>
> Good guess! I was running from AC without the battery installed. When I
> install the battery, but continue to run from AC, it works again. What
> is causing the problem then? I guess a workaround would be to install
> some laptop tools to prevent a full load of the battery; is there
> another solution?
It's not a problem, it's a way to protect your system. In some cases,
when fully loaded, the system draws too much power and your AC adaptor
(65W I guess) can't provide enough, so the system just crash. So when
the embedded controller detects that no battery is present and the 65W
adapter is used, it'll limit the max cpu frequency to prevent crashes.
See that thread about all this:
http://article.gmane.org/gmane.linux.hardware.thinkpad/40883
You really should always use your thinkpad *with* battery, and use
tp-smapi to keep the battery charge between 30-40% and 60-70%.
apt-get install tp-smapi-dkms to get the module
and http://www.thinkwiki.org/wiki/Tp_smapi for more info on this (what
you want is {start,stop}_charge_thresh).
Cheers,
--
Yves-Alexis
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