[ltp] X60 power consumption

[Richard Neill]

Dear X60 users,

I recall some people mentioning power-consumptions in the region of 6-8W 
for an X60. I'm getting 11W, even after following all the 
power-reduction instructions on thinkwiki (inc. min backlight). Does 
anyone have any particular tips?  What battery life would you expect 
from a new 8-cell pack?

I've already swapped out the HDD for an SSD (does the writeback time and 
laptop-mode stuff still apply here? Does it make a difference that I'm 
using it in Compatibility mode rather than AHCI mode - as suggested by 
the manufacturer, OCZ).

Does having 4GB RAM hurt power-consumption?

Does turning the wireless power down hurt range, or just throughput?
(the AP is not very close)

Also, it's hard to know which of the tips make a big difference, and 
which don't. For example, does suspending the soundcard save a few mW, 
or a substantial power? If I have bluetooth already switched off with 
Fn-F5, is it really off?

One of the powertop suggestions causes the system to emit a faint 
buzzing when I move the mouse pointer!

Thanks,

Richard


P.S. Am currently running a stock Ubuntu Jaunty system. Was 17W 
originally. CPU is Core 2, T2500.