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Thread: Using PowerTOP 2.6 Saves Power, Extends Battery Life On Ubuntu 14.04

  1. #11
    Join Date
    Aug 2012
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    Pennsylvania, United States
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    Quote Originally Posted by borsook View Post
    Yeah sure, but my question is more on the line is it worth to install powertop over laptopmode settings? It is clear that it is worth do something more than just stick to the default... but which?
    1) Don't use LaptopModeTools, its pretty much been abandoned. Everyone's moving/moved over to TLP.
    2) You're supposed to be TLP + PowerTop together, not just one or the other.

  2. #12
    Join Date
    Jan 2014
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    Quote Originally Posted by emerge-e-world View Post
    Create a simple service file, say /etc/systemd/system/powertop.service:

    Code:
    [Unit]
    Description=PowerTop
    
    [Service]
    Type=oneshot
    RemainAfterExit=yes
    ExecStart=/usr/sbin/powertop --auto-tune
    
    [Install]
    WantedBy=multi-user.target
    To enable it at boot:
    $ systemctl enable powertop
    Thanks.

  3. #13
    Join Date
    Nov 2010
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    2

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    Quote Originally Posted by emerge-e-world View Post
    you also need to add the following line to the [service] section, as powertop appearently needs a terminal to run:

    Code:
    Environment="TERM=xterm"
    source: Arch Wiki - Powertop
    PowerTop uses ncurses, I suppose that even with --auto-tune, it's trying to init ncurses, which fails without terminal (real or faked by $TERM).

  4. #14
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    Dec 2012
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    It might be a bad idea to enable some of the settings. On my laptop:
    - Intel HDA powersave causes an annoying "clicking" sound from speakers
    - USB powersave causes my mouse to stop working every 30 seconds

  5. #15
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    Jun 2012
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    Kraków, Polska
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    Quote Originally Posted by AnAkIn View Post
    It might be a bad idea to enable some of the settings. On my laptop:
    - Intel HDA powersave causes an annoying "clicking" sound from speakers
    - USB powersave causes my mouse to stop working every 30 seconds
    Try my kernels nad APM [instal NeteXt'73] - I resolved this problems

    netext73.pl

  6. #16
    Join Date
    Jun 2012
    Location
    Kraków, Polska
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    Default A true energy management system

    If you want to intelligently manage energy / performance / responsiveness of the system and hardware resources, it is proposed to install Our NeteXt'73 and install my solutions: one of the kernels - appropriate for the architecture, scripts managing energy and efficiency = APM and make appropriate entries in Grub, and also install the latest Linux firmware / microcode. Below videos of the action following system:

    Notebook - MSi X370:
    APU AMD E-350 (1600 MHz),
    GPU: Radeon 6310,
    RAM: 4 GB DDR3
    Kernel: 3.14.4-ext73-f1-29.5-brazos-ags-cfs,
    enegią management: APM 3.4, entries in Grub, Linux-firmware/amd microcode,
    Drivers: Catalyst 14.4 [stable].

    You can see how the system works by using profiles of performance-ondemand and performance-conservative - for APM. In the movies you can see how my APM gradually "quenches" individual devices and a decrease of energy consumption.



    video-2

    video-3

    video-4

  7. #17
    Join Date
    Jun 2012
    Location
    Kraków, Polska
    Posts
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    Quote Originally Posted by ext73 View Post
    If you want to intelligently manage energy / performance / responsiveness of the system and hardware resources, it is proposed to install Our NeteXt'73 and install my solutions: one of the kernels - appropriate for the architecture, scripts managing energy and efficiency = APM and make appropriate entries in Grub, and also install the latest Linux firmware / microcode. Below videos of the action following system:

    Notebook - MSi X370:
    APU AMD E-350 (1600 MHz),
    GPU: Radeon 6310,
    RAM: 4 GB DDR3
    Kernel: 3.14.4-ext73-f1-29.5-brazos-ags-cfs,
    enegią management: APM 3.4, entries in Grub, Linux-firmware/amd microcode,
    Drivers: Catalyst 14.4 [stable].

    You can see how the system works by using profiles of performance-ondemand and performance-conservative - for APM. In the movies you can see how my APM gradually "quenches" individual devices and a decrease of energy consumption.



    video-2

    video-3

    video-4
    aha another important piece of information - while working on the battery practically everything in PowerTOP will be on Good [on AC everything will be on the 'Bad' - intentionally = full power of the machine] - almost as certainly 'VM writeback timeout' will be 'Bad' - here is my purposeful = value proposed by PowerTOP I consider "inappropriate". In addition, a certain portion of energy saving systems WiFi does not work - hence be 'Bad' = disabled functionality in the driver sources [Developers driver turned off] or the lack of such functionality at all. This works for sure in part Realtek drivers, Atcheros or all of Intel's ... well, unless you switch it off this functionality by NeteXt'73.
    Last edited by ext73; 05-24-2014 at 06:25 PM.

  8. #18
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    Dec 2012
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    Quote Originally Posted by ext73 View Post
    Try my kernels nad APM [instal NeteXt'73] - I resolved this problems

    netext73.pl
    Then it might be a good idea to send patches upstream if you solved them

  9. #19
    Join Date
    Feb 2013
    Posts
    112

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    Quote Originally Posted by Ericg View Post
    1) Don't use LaptopModeTools, its pretty much been abandoned. Everyone's moving/moved over to TLP.
    2) You're supposed to be TLP + PowerTop together, not just one or the other.
    Which begs the question, which parts of the stack are to blame for users needing to install those 2 rather than have things working automatically ?

  10. #20
    Join Date
    Feb 2008
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    Linuxland
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    Powertop changes kernel default settings, which are decided by your distro.

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