Public bug reported:
I'm opening this bug as a generic bug against all laptop models. Because
I think Ubuntu has the same problem with almost all of the available
laptop models, bad battery runtime.
There is also bug 70247 about this but it's specific to IBM/Lenovo
Thinkpad X60.
My laptop is a HP nc8430 and Ubuntu gives me 1h30m runtime whilst I have
2h30-3h in XP.
One suggestion in lowering the power consumption is that the screen
should be dimmed immediately when the AC is unplugged (80%) and just
after a few (30?) seconds of idling it should be dimmed harder (40%?)
and eventually (5 mins?) shut off. This is somewhat what they do on Mac
today. This seems like a good default instead of having a screensaver.
Other suggestion is to look at Intel Powertop. The suggestions proposed
there could be default when running a laptop (on battery).
** Affects: ubuntu
Importance: Undecided
Status: New
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Bad battery runtime in Ubuntu
https://bugs.launchpad.net/bugs/195768
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