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Thread: Excessive Increase in Power Consumption

  1. #1
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    Excessive Increase in Power Consumption

    Hi,

    Has anyone noticed a high increase in power consumption in Quantal? I did a clean install yesterday and have a very minimal default setup. Power consumption is constantly reaching around 30W and system temperature lingers around 80C. I have a Core-i7-2620M CPU, 8GB RAM and Nvidia NVS4200/Intel HD 3000 graphic card. I have Bumblebee installed.

    Code:
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1"
    Thanks.
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  2. #2
    dino99's Avatar
    dino99 is offline Ubuntu addict and loving it
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    Re: Excessive Increase in Power Consumption

    Phoronix has already written about the same increasing for now

  3. #3
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    Re: Excessive Increase in Power Consumption

    +1, was hovering around 10W on 12.04, and am now up to 30W on 12.10.
    Lenovo X220 with Intel® Core™ i7-2620M CPU @ 2.70GHz × 4.

    Anyone have any advice to bring consumption back down to reasonable levels?

  4. #4
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    Re: Excessive Increase in Power Consumption

    Quote Originally Posted by fictivetoast View Post
    +1, was hovering around 10W on 12.04, and am now up to 30W on 12.10.
    Lenovo X220 with Intel® Core™ i7-2620M CPU @ 2.70GHz × 4.

    Anyone have any advice to bring consumption back down to reasonable levels?
    Yes, but I don't know if you'd do it.
    sudo apt-get install lxde
    This is a tower and power consumption no problem. I check for bugs on Unity then pile LXDE on top because I spent 42 years working on high end main frame computers where speed and efficiency were serious goals.

    Used to be you could run 2D however Ubuntu main thrust is 3D Unity Compiz. I'll bet 12.10 Kubuntu would be distinctly better also.

    Why? Because Compiz is designed to be running even when I've got full screen applications up and nothing Compiz does is even visible. I assume they've got even more plans for Compiz main line code?

    Curious if you'd be motivated to try 12.10 Kubuntu or Xubuntu or Lubuntu or Gnome ubuntu or ...

    Actually I don't know anything about power consumption - I've got a notebook and a netbook as well but don't have a clue how to measure power.

  5. #5
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    Re: Excessive Increase in Power Consumption

    Have any of you tried Jupiter? I know it helped quite a bit on my Compaq netbook, when I was still using it.

  6. #6
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    Re: Excessive Increase in Power Consumption

    I have noticed that in machines that are using llvmpipe: In that case the CPU is being used more intensively (instead of passing the graphics load to the GPU).

    To check:
    Code:
    sudo apt-get install nux-tools
    /usr/lib/nux/unity_support_test -p
    Regards,
    Effenberg
    Last edited by effenberg0x0; September 22nd, 2012 at 10:26 AM. Reason: typo: nux-tools (not nux-utils), thanks dino99.

  7. #7
    dino99's Avatar
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    Re: Excessive Increase in Power Consumption

    i suppose you mean:

    sudo apt-get install nux-tools

    (nux-utils is not an available package)

  8. #8
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    Re: Excessive Increase in Power Consumption

    Already running Jupiter and vm-writeback tweaks suggested by powertop, still getting insane power consumption...

  9. #9
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    Re: Excessive Increase in Power Consumption

    Quote Originally Posted by dino99 View Post
    i suppose you mean:

    sudo apt-get install nux-tools

    (nux-utils is not an available package)
    You're right, thanks. I was definitely thinking of mesa-utils && glxgears -info. Old habits die hard.

    Regards,
    Effenberg

  10. #10
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    Re: Excessive Increase in Power Consumption

    Guys,

    Now I'm using Quantal Gnome Remix Alpha2 on my VAIO Z (standard voltage i5 & sandy-bridge mobile), then I've also noticed such power-drain on QQ...

    So... have everyone tried deeper rc6 states?

    I've living with this grub parameters:
    Code:
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.powersave=1 i915.i915_enable_fbc=1 i915.i915_enable_rc6=4 i915.lvds_downclock=1 pcie_aspm=force iwlwifi.11n_disable=1 i915.i915_enable_fbc=1 intel-audio-powersave=true"
    Yeah I mean "4" is deeper rc6 state for power-saving...
    Then after booting on battery, powertop showed below :

    Code:
    The battery reports a discharge rate of 8.21 W
    The estimated remaining time is 5 hours, 24 minutes
    
    Summary: 130.1 wakeups/second,  1.9 GPU ops/seconds, 0.0 VFS ops/sec and 1.4% CP
    
                    Usage       Events/s    Category       Description
                 36.7%                      Device         Display backlight
                  0.8 ms/s      38.9        Interrupt      [49] i915
                649.1 µs/s      15.0        Process        syndaemon -i 2.0 -K -R -t
                245.4 µs/s      10.0        Timer          hrtimer_wakeup
                160.6 µs/s       9.6        kWork          ieee80211_iface_work
                  1.2 ms/s       9.4        Interrupt      [6] tasklet(softirq)
                230.8 µs/s       9.2        Timer          tick_sched_timer
                190.9 µs/s       8.3        Process        [rtsx-polling]
                141.8 µs/s       4.0        Process        /usr/lib/mozc/mozc_render
                  2.6 ms/s       3.1        Process        /usr/bin/gnome-shell
                  5.4 µs/s       2.1        kWork          blk_delay_work
                  0.7 ms/s       2.0        Process        /usr/lib/upower/upowerd
                280.1 µs/s       1.8        Process        [jbd2/dm-2-8]
                193.2 µs/s       1.5        Interrupt      [7] sched(softirq)
    Have anice day!!

    tista

    PS
    Forgot to mention...
    I've installed "cpufreqd". it could control frequency perfectly for my Z...
    Now it seems better than granola or hopefully than jupiter!
    Last edited by tista; September 22nd, 2012 at 03:17 PM. Reason: Added PS
    -- Lazulum Gtk3 theming PPA: "Lazulum" New clean gtk3 theme Project.

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