updated for BIOS 216
In 216 some things about how the dGPU works changed. Now no acpi_call or bbswitch is needed to power the Nvidia down. We can now just unbind it and set the power control for the Nvidia to "auto". GPU switching without restarting is still possible. With the service here it get's unbinded to have AMD only mode with power saving or for hybrid mode it get's binded.
This Git repo describes how I setup the ASUS Zephyrus G14 (GA401IV) with Fedora 32.
After this setup nearly everything seems to work really great. In addition to the Kernel modules from asus-linux.org I made some scripts to enable and disable the Nvidia GPU. By default after this setup the AMD GPU will be primary and the Nvidia will be used as a dedicated GPU that can be activated in GNOME Shell (right click on an app > launch app with dedicated graphics card). In this Repo also is a GNOME Shell extension that helps with switching between Nvidia Power on and off. Just enable "Amd Nvidia switcher" in Extensions or GNOME Tweaks and you will see a new icon in the top bar. Just click on it and you will switch the power state of the Nvidia GPU (warning: this will log you out). With the NVIDIA powered off power drain in idle is just between 5 - 6,5 watts. With the Nvidia on standby it's usually 10-12 watts while idle.
So let's go through this (I it works seemless in this order as I haven't done a complete new install, yet)...
1. Install Fedora 32
2. Boot to your installation and update everything
dnf update
dnf install tlp tlp-rdwtlp is used for automatic power management for some hardware components (so you don't have to powertop --auto-tune)
3. Reboot
4. copy all the files to the appropriate directories
git clone https://github.com/hyphone/asus-g14-fedora.git
cd asus-g14-fedora
cp -R etc/* /etc/
cp -R usr/* /usr/
chmod +x /usr/sbin/asus_boot
chmod +x /usr/sbin/asus_gpu_boot
chmod +x /usr/sbin/asus_gpu_switchwe clone this repo
we go to the repo directory
we copy everything in this repo of etc to /etc/
we copy everything in this repo of usr to /usr/
we make the scripts in /usr/sbin/asus... executable
5. Update the repos and install some packages
dnf update
dnf install kernel-devel akmod-nvidia xorg-x11-drv-nvidia-cuda asus-nb-ctrl dkms-hid-asus-rog dkms-asus-rog-nb-wmi akmod-acpi_callakmod-nvidia and xorg-x11-drv-nvidia-cuda installs the Nvidia driver
asus-nb-ctrl dkms-hid-asus-rog dkms-asus-rog-nb-wmi installs the currently necesary Kernel modules from asus-linux.org to get the function keys and custom fan control working
kernel-devel is necesarry for the dynamic kernel modules to compile
acpi_call modules from the tlp repo is needed to make the custom fan control working
it's also used by custom scripts to disable the Nvidia GPU (more on that later)
6. Enable the custom services
systemctl enable asusboot.service
systemctl enable asusgpuboot.serviceasusboot.service removes and adds again the i2c_hid modules because on Fedora 32 the touchpad sometimes is not initialized correctly on boot. This fixes this.
asusgpuboot.services sets the power state that was previously selected (AMD only or AMD+Nvidia on demand). This service gets called on boot.
5. Reboot
6. You can switch AMD / Nvidia on demand via the gnome extension or with "sudo systemctl start asusgpuswitch"
etc/asusd/asusd.conf
These are my custom fan curves for the asusd service from asus-linux.org. When on AC I usually use "normal" because of turbo is enabled in this profile in asusd.conf. On "silent" I disabled turbo and I usually use this while on battery.
etc/modprobe.d/asus.conf
Enables Nvidia power management and blacklists conflicting modules
etc/systemd/system/asusboot.service
removes and adds again the i2c_hid modules because on Fedora 32 the touchpad sometimes is not initialized correctly on boot. This fixes this.
etc/systemd/system/asusgpuboot.service
calls /usr/sbin/asus_gpu_boot on boot and resume (from suspend)
etc/systemd/system/asusgpuswitch.service
calls /usr/sbin/asus_gpu_switch
etc/tlp.conf
marginal adjusted tlp configuration with the CPU gonvenor set to "ondemand" on AC and "powersave" on BAT. Also max CPU frequency on BAT is limited to 1,7GHz.
usr/sbin/asus_boot
called by asusboot.service, gets called on boot / resume and removes / adds the i2c_hid modules because on Fedora 32 the touchpad sometimes is not initialized correctly on boot. This fixes this.
usr/sbin/asus_gpu_boot
called by asusgpuboot.service and powers the GPU down when not set or loads the Nvidia driver when set
usr/sbin/asus_gpu_switch
sets or removes the file /etc/asus_nvidia
this file will be used to check what mode the user selected. If this file is present AMD+Nvidia on-demand is used. If the file is not present AMD-only with the Nvidia powered down is used.
If the /etc/asus_nvidia is currently present this file will get deleted and the Nvidia driver gets unloaded. The Nvidia GPU also gets powered down. If the /etc/asus_nvidia is currently NOT present this file will get created, the Nvidia GPU gets powered up and the Nvidia drivers get loaded.
In both cases GDM gets restarted. This will log you out so be sure you save your stuff before doing this.
usr/share/gnome-shell/[email protected]
This is a GNOME-Shell extension I quickly wrote for switching between AMD-only and Nvidia on-demand via GNOME-Shell so no command line or terminal is necesarry. Just click the AMD or Nvidia icon in the top bar of GNOME-Shell, type your password, you will get logged out and the Nvidia is powered on or off.
usr/share/pulseaudio/alsa-mixer/paths
The currently needed adjustments for pulseaudio so volume control for the speakers works see more at asus-linux.org