Comments on: Power trends

By: hughsie

hughsie — Sun, 15 Jun 2008 22:56:20 +0000

@Alex:

I get about 4 hours on a 6 cell battery.

By: Alex Hixon

Alex Hixon — Sun, 15 Jun 2008 09:05:09 +0000

How much battery life do you get out of the laptop on average?

By: baze

baze — Fri, 13 Jun 2008 16:50:52 +0000

what do you suggest for using speedstep on a c2d for example? preferably sth that “just works” and doesn’t require lots of configuration… just using g-p-m doesn’t reduce cpu speed, does it?
and are laptop-mode-utils actually good or is the constantly spinning down the hdd killing it slowly?

By: hughsie

hughsie — Fri, 13 Jun 2008 07:20:32 +0000

@qhartman

I’ll post my slides as soon as I’ve done them – and I’ll try to arrange the presentation is recorded. Thanks!

By: oliver

oliver — Thu, 12 Jun 2008 22:45:26 +0000

“So, what can you take from this graph:”

Sorry, but first thing to take from this graph is that OpenOffice (it _was_ made with OOo, right?) apparently sucks at making graphs
- why is in the color explanation (F8, F9, Rawhide) the order of colors exactly opposite from the order of the bars? That’s highly unintuitive.
- why are there _no_ lines right at the 10W, 20W, 30W, 40W marks, instead of drawing _thick_ lines there?
- the text rendering on the left (Hibernate, Suspend…) looks really broken.

Of course, the graph’s contents are really interesting and btw. thanks for the great g-p-m – even on eeepc with its quite broken battery it gets meaningful “remaining time” estimates.

By: Anders Aagaard

Anders Aagaard — Thu, 12 Jun 2008 22:01:28 +0000

Do dim on idle, and count idle as screensaver being on. Seems fairly fool proof to me.

Do you suspend to ram? If so, you could suspend when idle, for me atleast resuming from suspend takes 2-3 seconds, so I dont mind waiting that to decrease power usage. I got a little python script that suspends when the screensaver comes on, if my load average is low and amarok isn’t playing music :p

By: troll

troll — Thu, 12 Jun 2008 18:33:51 +0000

Don’t dim on idle. Often, the computer is idle and the user is watching something, ie. reading something really hard to comprehend and pondering about it. Dimming absolutely kills usability at that point. Furthermore the difference between minimum and maximum is clearly nothing as even your chart shows us.

By: qhartman

qhartman — Thu, 12 Jun 2008 17:42:27 +0000

I’d love it if you would post your slides, and consider recording the presentation. There’s no way I can get to Boston (living about 1500 miles away…) but I am keenly interested in this topic and would love to hear / see more on your findings.

By: hughsie

hughsie — Thu, 12 Jun 2008 17:38:13 +0000

@Petrosyan:

No, there are still some parts alive. The LED’s stay lit and the adaptor warm, and 1W is the smallest measurement I could take…

By: Petrosyan

Petrosyan — Thu, 12 Jun 2008 16:56:02 +0000

Shouldn’t power consumption in hibernate mode be exactly 0?