История изменений

From the nvidia docs

Option "NVreg_DynamicPowerManagement=0x00"
	With this setting, the NVIDIA driver will only use the GPU's built-in power management so it
	always is powered on and functional. This is the default option, since this feature is a new
	and highly experimental feature. Actual power usage will vary with the GPU's workload.

Option "NVreg_DynamicPowerManagement=0x01"
	With this setting, the NVIDIA GPU driver will allow the GPU to go into its lowest power state
	when no applications are running that use the nvidia driver stack. Whenever an application
	requiring NVIDIA GPU access is started, the GPU is put into an active state. When the
	application exits, the GPU is put into a low power state.

Option "NVreg_DynamicPowerManagement=0x02"
	With this setting, the NVIDIA GPU driver will allow the GPU to go into its lowest power state
	when no applications are running that use the nvidia driver stack. Whenever an application
	requiring NVIDIA GPU access is started, the GPU is put into an active state. When the
	application exits, the GPU is put into a low power state.

	Additionally, the NVIDIA driver will actively monitor GPU usage while applications using the
	GPU are running. When the applications have not used the GPU for a short period, the driver
	will allow the GPU to be powered down. As soon as the application starts using the GPU, the
	GPU is reactivated.

	It is important to note that the NVIDIA GPU will remain in an active state if it is driving a
	display. In this case, the NVIDIA GPU will go to a low power state only when the X
	configuration option HardDPMS is enabled and the display is turned off by some means - either
	automatically due to an OS setting or manually using commands like xset.

	Similarly, the NVIDIA GPU will remain in an active state if a CUDA application is running.

To enable Dynamic Power Management edit the file /etc/modprobe.d/nvidia.conf and add the setting you want. My configuration is

modprobe nvidia "NVreg_DynamicPowerManagement=0x02"

From the nvidia docs

Option "NVreg_DynamicPowerManagement=0x00"
	With this setting, the NVIDIA driver will only use the GPU's built-in power management so it
	always is powered on and functional. This is the default option, since this feature is a new
	and highly experimental feature. Actual power usage will vary with the GPU's workload.

Option "NVreg_DynamicPowerManagement=0x01"
	With this setting, the NVIDIA GPU driver will allow the GPU to go into its lowest power state
	when no applications are running that use the nvidia driver stack. Whenever an application
	requiring NVIDIA GPU access is started, the GPU is put into an active state. When the
	application exits, the GPU is put into a low power state.

Option "NVreg_DynamicPowerManagement=0x02"
	With this setting, the NVIDIA GPU driver will allow the GPU to go into its lowest power state
	when no applications are running that use the nvidia driver stack. Whenever an application
	requiring NVIDIA GPU access is started, the GPU is put into an active state. When the
	application exits, the GPU is put into a low power state.

	Additionally, the NVIDIA driver will actively monitor GPU usage while applications using the
	GPU are running. When the applications have not used the GPU for a short period, the driver
	will allow the GPU to be powered down. As soon as the application starts using the GPU, the
	GPU is reactivated.

	It is important to note that the NVIDIA GPU will remain in an active state if it is driving a
	display. In this case, the NVIDIA GPU will go to a low power state only when the X
	configuration option HardDPMS is enabled and the display is turned off by some means - either
	automatically due to an OS setting or manually using commands like xset.

	Similarly, the NVIDIA GPU will remain in an active state if a CUDA application is running.

To enable Dynamic Power Management edit the file /etc/modprobe.d/nvidia.conf and add the setting you want. My configuration is

modprobe nvidia "NVreg_DynamicPowerManagement=0x02"