Setting gaming laptop to performance mode while running on battery

Graphics / Linux Linux
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1

Hello,

I’m trying to get the maximum performance of my laptop while running on battery (without power cord connected).

  • My laptop is: GIGABYTE AORUS 17 YE5
  • GPU: GeForce RTX 3080 Ti
  • Nvidia driver: 510.85.02
  • Ubuntu 20.04
  • kernel: 5.15.0-41-generic

I already tried the following solutions:
solution1: Set Nvidia GPU Performance Level possible? - Graphics & Display - Manjaro Linux Forum
solution2: create config /etc/modprobe.d/nvidia.conf and add
options nvidia NVreg_RegistryDwords="OverrideMaxPerf=0x1" to it.

In both solutions, the mentioned files wasn’t exist and I had to create them myself. but for both solution there wasn’t any improving of the GPU performance when I run the laptop on battery. I check the performance levels in the PowerMizer information tab in Nvidia X server setting, and it reaches maximum level of 2 when on battery, while on power it reaches the level 4 (highest level).

Do you know how/where I can configure the nvidia driver to always use the highest performance mode even without connecting to power?

Thanks in Advance,
Eslam

2

AFAIK, that’s not possible without patching the driver.

3

Is there already a source code patch available or even a patched driver? and if not do you know how to patch it?

4

The driver’s module sources in kernel/nvidia/nv-acpi.c contain the function nv_acpi_get_powersource
I suspect modifying it to always report AC plugged should have the desired effect.
I don’t know if there are already patches available but I don’t think so.

5

Ok, I’ve set it to always true (AC plugged), Is there a way to safely build and install it ?

6

I guess you should modify the dkms sources in /usr/src/nvidia-(version)
Then do a
sudo dkms remove nvidia/(version)
sudo dkms install nvidia/(version)
to compile and install so it survives a kernel upgrade and you don’t have to mess with missing package dependencies.
Maybe also use apt hold to nail the specific version.