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_POWER_PROFILE_ON_AC/BAT

AMD Radeon GPU (old)

RADEON_POWER_PROFILE_ON_AC=default
RADEON_POWER_PROFILE_ON_BAT=default

Controls the clock for the AMD GPU. Supported by the radeon driver only, not fglrx. Possible values:

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

Default when unconfigured: default

RADEON_DPM_STATE_ON_AC/BAT

AMD Radeon GPU (new)

Since kernel 3.11 the new radeon dynamic power management (DPM) is available. Supported by the radeon driver only, not fglrx.

RADEON_DPM_STATE_ON_AC=performance
RADEON_DPM_STATE_ON_BAT=battery

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

  • battery – default on battery power
  • performance – default on AC power

RADEON_DPM_PERF_LEVEL_ON_AC/BAT

AMD Radeon GPU (new)

RADEON_DPM_PERF_LEVEL_ON_AC=auto
RADEON_DPM_PERF_LEVEL_ON_BAT=auto

Controls the performance level. Possible values:

  • auto – recommended
  • low
  • high

Default when unconfigured: auto

Note

This setting makes the display flicker briefly when the power source changes.

See also