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)
See also
Settings: Introduction
FAQ: Graphics
FAQ: Power Consumption
AMDgpu kernel driver – Sysfs node documentation, see power_dpm_force_performance_level
AMDgpu DRM driver – see abmlevel
Radeon KMS driver – see “KMS Power Management Options”