TLP

From the project page:

TLP brings you the benefits of advanced power management for Linux without the need to understand every technical detail. TLP comes with a default configuration already optimized for battery life, so you may just install and forget it. Nevertheless TLP is highly customizable to fulfill your specific requirements.

Installation

Install the tlp package. Installing the optional dependencies may help provide additional power saving.

Enable/start tlp.service.

Radio Device Wizard (tlp-rdw)

When using the Radio Device Wizard (tlp-rdw), it is required to use NetworkManager and enabling NetworkManager-dispatcher.service.

One should also mask the service systemd-rfkill.service and socket systemd-rfkill.socket to avoid conflicts and assure proper operation of TLP's radio device switching options.

See TLP configuration for details.

ThinkPads only

For advanced battery functions, i.e. charge thresholds and recalibration, install the following package(s):

tp_smapi – tp-smapi is needed for battery charge thresholds, recalibration and specific status output of tlp-stat
acpi_call – acpi-call is needed for battery charge thresholds and recalibration on Sandy Bridge and newer models (X220/T420, X230/T430 et al.). Use acpi_call-dkms if not running kernels from official repositories.

See the TLP FAQ, section "Which kernel module?", for details.

Controlling the charge thresholds using D-Bus without root privileges is possible using threshy^AUR and it's example Qt user interface threshy-gui^AUR.

Front end

tlpui-git^AUR is a GTK user interface for TLP written in Python. As of May 2020, the software is still in beta.

Configuration

The configuration file is located at /etc/tlp.conf and provides a "largely" optimized power saving by default. For a full explanation of options see: TLP configuration.

Force battery (BAT) configuration

When no power supply can be detected, the setting for AC will be used on devices like desktops and embedded hardware.

You may want to force the battery (BAT) settings when using TLP on these devices to enable more power saving:

/etc/tlp.conf

# Operation mode when no power supply can be detected: AC, BAT.
TLP_DEFAULT_MODE=BAT

# Operation mode select: 0=depend on power source, 1=always use TLP_DEFAULT_MODE
TLP_PERSISTENT_DEFAULT=1

Btrfs

The factual accuracy of this article or section is disputed.

Reason: Hardware/kernel-specific quirk (Discuss in Talk:TLP#Btrfs)

To avoid filesystem corruption on btrfs formatted partitions, set:

SATA_LINKPWR_ON_BAT=max_performance

See also these links for discussion on this topic: Github bug report, Reddit follow-up discussion.

Bumblebee with NVIDIA driver

If you're running Bumblebee with NVIDIA driver, you need to disable power management for the GPU in TLP in order to make Bumblebee control the power of the GPU.

If you are running TLP version prior to 0.9, run lspci to determine the address of the GPU (such as 01:00.0), then set the value:

 RUNTIME_PM_BLACKLIST="01:00.0"

If your TLP version is 1.0 or above, then set, according to the driver you are using:

 RUNTIME_PM_DRIVER_BLACKLIST="nouveau nvidia"

PCI(e) runtime power management on AC

Enabling runtime power management for PCI(e) bus devices while on AC may improve power saving on some laptops. This is enabled by default on battery, but not on AC. To enable on AC, set:

/etc/tlp.conf

RUNTIME_PM_ON_AC=auto

USB autosuspend

You may want to disable the autosuspend mode for certain USB devices, such as keyboards, mice or Ethernet adapters. See the TLP documentation for details.

Command line

TLP provides several command line tools. See TLP commands.

Debugging

You can display information about the currently used Mode(AC/BAT) and applied configurations:

 # tlp-stat

hci0: link tx timeout

If your bluetooth headphones suddenly stop working and you see this error in dmesg, it may be caused by TLP suspending your device. Add device ID to USB_BLACKLIST in /etc/tlp.conf:

# Disable bluetooth autosuspend
USB_BLACKLIST="8087:0aaa"

Get the device ID for your bluetooth device from lsusb -v. Restart TLP and the bluetooth service.

Features intentionally excluded

Fan control. See Fan speed control

Backlight brightness. See Backlight

TLP

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