I'm making this post since finding this specific software was extremely hard. I kept searching for an AMD GPU GUI for Linux and only kept running into WattmanGTK and Radeon-Profile. While both are probably great. I could not for god's sake install them properly. Now, I'm just another Linux noob who prefers to not to be in contact with terminal and unfortunately those two mentioned tools (WattmanGTK and Radeon-Profile) both required using terminal in ways that... didn't make sense to me?

I kept digging and digging to find a GUI software and somehow with great damn luck ran into CoreCtrl. Not only was this thing damn easy to install. IT WORKS! It also looks like the Windows AMD program... except maybe a bit better? Only things I find it missing is voltage control. But anyhow, I can control my fan speeds and my clock speeds, that's almost all I want but surely enough for my needs.

This software seems like it is super unknown in the Linux world and I want to try and bring it out to people.

https://gitlab.com/corectrl/corectrl

So today i switched to ubuntu, already installed the drivers but now I want to control my fan curve and undervolt like I used to do on windows with the amd drivers, how do I do that?

Btw I'm on 20.04

It will break apt, and running the fix it suggests will uninstall pretty much every app and system file. Thankfully Timeshift saved my ass! You've been warned lol.

I recently made the switch to as-rock 7900 XT Phantom Gaming and decided to give undervolting a try using CoreCtrl. After reading through the documentation on GitLab and watching a few tutorial videos, it seemed pretty straightforward.

I set the voltage offset to -95mV, adjusted my min/max GPU clocks, and left the memory settings untouched. I also cranked the power limit to the max.

Before the undervolt, I was getting around 70 FPS @ 1440p Ultra in Cyberpunk, with power draw peaking up to 330 watts and temperatures hovering around 68-70°C. After the undervolt, I’m still hitting the same FPS, but the card now draws between 150-200 watts, with temps staying around 55-60°C.

Is it really this easy? Would love to hear if anyone has additional tips or tricks for further optimizing my setup!

Wanted to post and leave this here for other who may been having the struggle with getting core CoreCtrl up and working on Nobara like I did. the Gitlab doesn't have all the correct instructions for this distro.

REMINDER: CoreCtrl for GPU advanced settings like this guide shows only works for AMD GPU's. NVIDIA GPU's don't support it on Linux.

1: Install it, duh. then run it to make sure it works too.

sudo dnf install corectrl 

2: Create a text file and name it "90-corectrl.pkla" in the file destination bellow.

/etc/polkit-1/localauthority/50-local.d/90-corectrl.pkla

with the following contents:

[User permissions] 

Identity=unix-group:your-user-group Action=org.corectrl.* ResultActive=yes

The "your-user-group" is your user group which should be the first bit of the command line in a terminal that appears before typing.

EX:

[tc@TC ~]$

Therefore~ "tc"

[User permissions]

Identity=unix-group:tc Action=org.corectrl.* ResultActive=yes

In my case.

3: Time to edit the grub and this is where it deviates from the Gitlab guide a bit cause Fedora stuff.

In terminal enter

sudo gedit /etc/default/grub

Then as the guide mentions you need to enter

amdgpu.ppfeaturemask=0xffffffff

to the GRUB_CMDLINE_LINUX_DEFAULT= as instructed. it should look something like this.

GRUB_CMDLINE_LINUX_DEFAULT='quiet splash resume=UUID=ec70262b-7e5d-4402-a48b-c22a855757c1 amdgpu.ppfeaturemask=0xffffffff'

Then regenerate the bootloader with this command

sudo grub2-mkconfig -o /boot/grub2/grub.cfg

Just adds 2 in different places in the line so Nobara can do the correct thing. the command in the Gitlab page will just tell you "grub-mkconfig: command not found..." Thank you LionHeartP on the Nobara Discord for helping me with that.

4: Just reboot and then you should be good to go for Corectl on your AMD GPU. Enjoy!