Graphics

INTEL_GPU_*

Intel GPU

INTEL_GPU_MIN_FREQ_ON_AC=0
INTEL_GPU_MIN_FREQ_ON_BAT=0
INTEL_GPU_MAX_FREQ_ON_AC=0
INTEL_GPU_MAX_FREQ_ON_BAT=0
INTEL_GPU_BOOST_FREQ_ON_AC=0
INTEL_GPU_BOOST_FREQ_ON_BAT=0

Set the min/max/turbo frequency for the Intel GPU. Possible values depend on your hardware. See the output of tlp-stat -g for available frequencies.

RADEON_DPM_PERF_LEVEL_ON_AC/BAT

AMD GPU

RADEON_DPM_PERF_LEVEL_ON_AC=auto
RADEON_DPM_PERF_LEVEL_ON_BAT=auto

Controls the Dynamic power management (DPM) performance level. Supported by amdgpu (TLP version 1.4 and newer only) and radeon drivers. Possible values:

auto – recommended
low
high

Default when unconfigured: auto

RADEON_DPM_STATE_ON_AC/BAT

AMD GPU

RADEON_DPM_STATE_ON_AC=performance
RADEON_DPM_STATE_ON_BAT=battery

Controls the power management method of the GPU. Possible values:

battery
balanced
performance

RADEON_POWER_PROFILE_ON_AC/BAT

AMD GPU (ATI legacy hardware)

RADEON_POWER_PROFILE_ON_AC=default
RADEON_POWER_PROFILE_ON_BAT=default

Controls the clock of the GPU. Supported by the radeon driver on legacy ATI hardware only (where DPM is not available). Possible values:

low
mid
high
auto – high on AC, mid on battery
default – use hardware defaults

Default when unconfigured: default

Note

This setting may cause the display to flicker briefly when changing the power source.

AMDGPU_ABM_LEVEL_ON_AC/BAT

Version 1.7 (unreleased)

AMD GPU

AMDGPU_ABM_LEVEL_ON_AC=0
AMDGPU_ABM_LEVEL_ON_BAT=3

Enable display panel Adaptive Backlight Modulation (ABM). Possible levels are:

0 – off
1..4 – maximum brightness reduction allowed by the ABM algorithm, 1 represents the least and 4 the most power saving

Notes:

Requires AMD Vega or newer GPU with amdgpu driver as of kernel 6.9
Savings are made at the expense of color balance

Default when unconfigured: 0 (AC), 1 (BAT)