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Ubuntu 11.10 Power Consumption Up By As Much As ~50%

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  • fewt
    replied

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  • steevven1
    replied
    LaunchPad Bug Report

    The Sandy Bridge-specific bug report for this is located here at Ubuntu LaunchPad: https://bugs.launchpad.net/ubuntu/+s...ux/+bug/834037

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  • dargllun
    replied
    Originally posted by lgstoian View Post
    I suspected he wanted to make the tests as fair as possible as he is comparing older versions of Ubuntu that use the gnome desktop. Unity is not only knew but highly gpu depended. if he used it the power consumption would of probably been through the roof.
    Sure; what I meant, though, is that a clean install of 11.04 defaults to using Unity, as does 11.10, so I'd have expected that he compares that. I wouldn't be too surprised if 11.04 with Unity is just as bad as 11.10, but that might make the story less interesting.

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  • lgstoian
    replied
    I suspected he wanted to make the tests as fair as possible as he is comparing older versions of Ubuntu that use the gnome desktop. Unity is not only knew but highly gpu depended. if he used it the power consumption would of probably been through the roof.

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  • dargllun
    replied
    Clean install?

    Michael - I'm wondering if I'm reading that system table right: you say you're comparing clean install's, so why uses that one system GNOME 2.32.2 and not Unity as Desktop? Given the poor state Unity is in at the moment, it might as well have an impact on power consumption.

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  • _ONH_
    replied
    Does this bloob also aplies to the latest fedora or suse distro with the same kernel also that much or not?
    Because then its a problem for me as I don't use Ubuntu since it failed to start on my Laptop with 6.04 I think, whereas other distros worked more or less out of the box.

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  • lgstoian
    replied
    Wow is all I have to say. This is getting abit out of hand. I should test this on my netbook if the power drain has actually increased that much it would really be on par with the one I get under Haiku. Which in translation would mean Damm it's bad !
    Well then again I am a battery life freak. Downgrading to Xp just cuz I get 30 more minutes of battery life.

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  • blackshard
    replied
    ubuntu 11.04 on my hp dv5 system had a bad laptop-mode default configuration.
    Just for an example, it will completely deactivate my hard disk driver power management features, and I'm not talking about stop disk spinning, but rather electronics power saving features. The temperatures of the disk went to absurd levels too. I had to manually correct those issues.

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  • Sadako
    replied
    Considering all the reports about battery life decreasing with each recent kernel version, just thought I'd add that battery life has actually improved for me, I get about 8.25 hours on a full charge with 3.0.4, as opposed to 7.5 with 2.6.39.4, which considering the manufacturer states up to 8 hours for this model, and they always exagerate such figures, I consider to be pretty damn good...

    I measured this by simply disabling dpms and just letting the laptop sit there discharging, wireless and bluetooth were turned off and no ethernet plugged in, this is with intel 4500mhd graphics.

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  • Rambo Tribble
    replied
    If this goes much further ...

    ... Linus may have to consider using decrements for new versions, instead of increments.

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