Re: Re: DSDT Change (Compaq Presario 2100)

["Sérgio Monteiro Basto" <sergiomb-hHo3WeeoaswVhHzd4jOs4w@public.gmane.org>]

On Fri, 2004-07-02 at 18:33, Andre Eisenbach wrote:
> Pavel Machek wrote:
> 
> >>>Try your machine on battery, with full load. Monitor battery
> >>>temperature. If it gets hot, your battery was not really designed for
> >>>this, and forget this...
> >>>								Pavel
> >>>      
> >>>
> 
> Thanks for the heads up on this, Pavel!
> 
> I did unplug my batter, started an updatedb and compiled firefox, 
> coreutils and a new kernel. The battery got warm, but not hot. 
> Definitely not more then when charging it.
> 
> A curious (unrelated) observation:
> The ACPI thermal zone temperature indicated about 68 C at most  on 
> battery doing this. However, when the battery was drained and I plugged 
> the AC back in, the temperature rose and stayed at about 75 C and the 
> fans worked audibly harder. This continued even after I removed the 
> battery, so it's not the additional heat from the charging.
> I wonder if something else is throttled when on battery. It's not the 
> CPU though as benchmarks dont slow down on battery anymore after my DSDT 
> change.
> 
> As far as the DSDT change goes. Pavel, do you think that the kind of 
> throtteling they do is an effective way to limit battery current draw?
> I am getting more battery life now - even with powernow at "performance".
> 
> Cheers.
>    Andre
Hi 
with cpufreq on kernel 2.4.2x
you can get even better "performance" (I guess)
http://ftp.linux.org.uk/pub/linux/cpufreq/

About nolapic problem. I understand that you, also, have to put
"nolapic" on boot kernel to boot. Well is an old problem on some
presarios like my 700. 
We have one patch that can resolve boot problem, I am testing it and the
only problem that I found by now, is that hangs when trying change video
output (Fn+F3).
the last propose patch on
http://bugme.osdl.org/show_bug.cgi?id=1269

ah! btw my dir /proc/acpi/thermal_zone/ is empty and laptop lives well
with that.

cheers,
-- 
Sérgio M. B.



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