Difference between revisions of "Power Management"

<translate>

<translate>

Power Saving techniques can be used to minimize the heat produced and conserve energy.  On laptops, this can be especially important as it can significantly extend battery life and excessive heat can be both uncomfortable and loud on portable devices.

Power Saving techniques can be used to minimize the heat produced and conserve energy.  On laptops, this can be especially important as it can significantly extend battery life and excessive heat can be both uncomfortable and loud on portable devices.

[[File:battery.png|left|96px]]

[[File:battery.png|left|96px]]

There are several options for managing power under Manjaro.  In this article, we will introduce three of the more popular options.

There are several options for managing power under Manjaro.  In this article, we will introduce three of the more popular options.

{{note|In most cases running more than one power management tool at a time can cause conflicts so it is best practice to only use one of the below options}}

{{note|In most cases running more than one power management tool at a time can cause conflicts so it is best practice to only use one of the below options}}

<br clear="all"/>

<br clear="all"/>

[http://linrunner.de/en/tlp/tlp.html TLP] is the most commonly used option for automatic power management.

[http://linrunner.de/en/tlp/tlp.html TLP] is the most commonly used option for automatic power management.

TLP is available from the Manjaro repositories, can be installed with your favorite package manager or by using entering the following command into your terminal:

TLP is available from the Manjaro repositories, can be installed with your favorite package manager or by using entering the following command into your terminal:

Now that it is installed, you need to start and enable the service.  This can be accomplished with the command:

Now that it is installed, you need to start and enable the service.  This can be accomplished with the command:

  systemctl enable tlp --now

  systemctl enable tlp --now

{{note|TLP 1.2.2 and lower need another service as well: tlp-sleep.service}}

{{note|TLP 1.2.2 and lower need another service as well: tlp-sleep.service}}

[[File:Tlpui.png|left|400px]]

[[File:Tlpui.png|left|400px]]

TLP can manually configured by editing the file '''/etc/default/tlp''' as described in [http://linrunner.de/en/tlp/docs/tlp-configuration.html The Official Documentation].

TLP can manually configured by editing the file '''/etc/default/tlp''' as described in [http://linrunner.de/en/tlp/docs/tlp-configuration.html The Official Documentation].

A simpler way to configure TLP is via the GUI tool [https://github.com/d4nj1/TLPUI TLPUI]

A simpler way to configure TLP is via the GUI tool [https://github.com/d4nj1/TLPUI TLPUI]

To install TLPUI install the package '''tlpui''' using your favorite package manager or with the command

To install TLPUI install the package '''tlpui''' using your favorite package manager or with the command

  pamac install tlpui

  pamac install tlpui

<br clear="all"/>

<br clear="all"/>

An Alternative to TLP for laptops is [https://github.com/rickysarraf/laptop-mode-tools Laptop Mode Tools(LMT)].

An Alternative to TLP for laptops is [https://github.com/rickysarraf/laptop-mode-tools Laptop Mode Tools(LMT)].

To install {{ic|laptop-mode-tools}}, enter the following command into your terminal:

To install {{ic|laptop-mode-tools}}, enter the following command into your terminal:

Once installed, to enable LMT to start automatically every time you boot your computer, enter the following into your terminal:

Once installed, to enable LMT to start automatically every time you boot your computer, enter the following into your terminal:

LMT automatically configures some settings for you in order to optimize your laptop's battery life.

LMT automatically configures some settings for you in order to optimize your laptop's battery life.

For configuration, the file to edit is {{ic|/etc/laptop-mode/laptop-mode.conf}}}

For configuration, the file to edit is {{ic|/etc/laptop-mode/laptop-mode.conf}}}

The individual kernel modules can be configured from the configuration files present in {{ic|/etc/laptop-mode/conf.d/}}

The individual kernel modules can be configured from the configuration files present in {{ic|/etc/laptop-mode/conf.d/}}

PowerTop a diagnostic tool used to identify and report issues with power consumption and management.  It can be used as a reporting tool, an automated power management tool or both.

PowerTop a diagnostic tool used to identify and report issues with power consumption and management.  It can be used as a reporting tool, an automated power management tool or both.

It can be installed as

It can be installed as

  pamac install powertop

  pamac install powertop

You can generate a report using powertop with the command:

You can generate a report using powertop with the command:

  sudo powertop --html

  sudo powertop --html

This will create the file {{ic|powertop.html}} in the current directory.  You can open this file in any web browser.

This will create the file {{ic|powertop.html}} in the current directory.  You can open this file in any web browser.

If you are using TLP for power management you may notice some differences in the recommendations between the tools.  The article [http://linrunner.de/en/tlp/docs/tlp-faq.html#powertop Comparing TLP with PowerTop reporting] describes some of the reasons for these differences.

If you are using TLP for power management you may notice some differences in the recommendations between the tools.  The article [http://linrunner.de/en/tlp/docs/tlp-faq.html#powertop Comparing TLP with PowerTop reporting] describes some of the reasons for these differences.

The command {{ic|sudo powertop --auto-tune"}} will allow PowerTop to automatically tune power management based on it's recommendations.

The command {{ic|sudo powertop --auto-tune"}} will allow PowerTop to automatically tune power management based on it's recommendations.

From a practical perspective, the best way to use PowerTops auto-tuning is with a systemd service.

From a practical perspective, the best way to use PowerTops auto-tuning is with a systemd service.

To create, start and enable a systemd service for PowerTop you can use the commands:

To create, start and enable a systemd service for PowerTop you can use the commands:

  sudo sh -c "echo -e '[Unit]\nDescription=PowerTop\n\n[Service]\nType=oneshot\nRemainAfterExit=true\nExecStart=/usr/bin/powertop --auto-tune\n\n[Install]\nWantedBy=multi-user.target\n' > /etc/systemd/system/powertop.service"

  sudo sh -c "echo -e '[Unit]\nDescription=PowerTop\n\n[Service]\nType=oneshot\nRemainAfterExit=true\nExecStart=/usr/bin/powertop --auto-tune\n\n[Install]\nWantedBy=multi-user.target\n' > /etc/systemd/system/powertop.service"

[https://github.com/intel/thermal_daemon ThermalD], the Linux Thermal Daemon can be used to automatically handle CPU frequency scaling according to system load.

[https://github.com/intel/thermal_daemon ThermalD], the Linux Thermal Daemon can be used to automatically handle CPU frequency scaling according to system load.

To install it, install {{ic|thermald}} in your favorite package manager or use the command:

To install it, install {{ic|thermald}} in your favorite package manager or use the command:

  pamac install thermald

  pamac install thermald

After installing it needs to be configured to automatically start at boot in order to work:

After installing it needs to be configured to automatically start at boot in order to work:

  sudo systemctl enable --now thermald

  sudo systemctl enable --now thermald