[ltp] Frustrating powertop results for a22m

Connor Behan linux-thinkpad@linux-thinkpad.org
Sat, 16 Feb 2008 19:13:21 -0500


Ok I think it's a little better now. Still 40 to 50% (which is about 260 
wakeups) when X is running, but I am also using wireless now, so a high 
number is to be expected.
> it is hpet=force actually. Use a patched kernel, or 2.6.24. Using hardy's 
> kernel 2.6.24-5 on gutsy works perfectly; 2.6.24-7 has more problems.
>
>   
I added the hpet=force parameter and I have kernel 2.6.24.1. How do you 
tell if the parameter is actually being used?
> Just look into the lspci output. i830m chipsets have better speedstep
> support. Boards based on the 440BX chipset are at bit limited here.
>
>   
Ah damn, I have a 440BX chipset.  I guess that means cpufreq will not 
work... yet...

> What power consumption do you see in powertop? I get slightly below 10
> Watts on my T23 when it is completely idle, LCD dimmed to the lowest
> brightness, and hard disk spun down. Usually I get 10-12 Watts. I think
> the A series is not as power efficient as the T series, so your numbers
> might be somewhat higher.
>
>   
Powertop actually says no ACPI power usage estimate available. My 
battery is 10.8V and 5.4Ah and last for 4h at the most. Does that mean 
the average consumption is (10.8*5.4/4)= 14.58W?

> Id be be very surprised if youll get any better battery run time.
>  What battery do you have? 9 cell? genuine IBM? how old?
>
>   
Yes I have a 9 cell 02K6615 by Panasonic, although it's cells are more 
capacious than my old battery so it is actually 11/6 as good as my old 
one. It is brand new so I'm enjoying this while it lasts and not 
watching any movies while using it or keeping the battery in while on AC.