Hi user Garuda,
I’m writing this post to share a stable fix for the brightness control issue on the HP Victus 15 laptop with Hybrid Graphics (AMD Ryzen + NVIDIA GTX 1650).
The core problem is that the Linux Kernel fails to correctly identify which driver should handle the screen backlight (an ACPI/AMDGPU driver conflict). This causes the Fn+F2/F3 brightness keys to stop working, or the brightness control to work only intermittently.
The final solution is to force the AMDGPU driver (which controls the physical display output) to take over the backlight by adding a GRUB boot parameter.
THE FIX (BRIGHTNESS SOLUTION)
Please follow the steps below to resolve this issue permanently:
1. Open the GRUB Configuration File:
sudo nano /etc/default/grub
2. Add the Parameter:
Find the line GRUB_CMDLINE_LINUX_DEFAULT= and add the parameter:
amdgpu.backlight=0
Example of the complete line:
GRUB_CMDLINE_LINUX_DEFAULT="loglevel=3 quiet amdgpu.backlight=0"
3. Update GRUB:
After saving and closing the file, update the GRUB bootloader:
sudo grub-mkconfig -o /boot/grub/grub.cfg
4. Final Test:
Reboot your system. The brightness control should now work properly.
I hope this fix helps other users who are using the hybrid HP Victus 15 setup.
Thank you.
My Spec laptop hybrid 
:
CPU: AMD RYZEN 5 5600H With iGPU
GPU: NVIDIA GTX 1650
RAM: 32GB
STORAGE: 1TB
CURRENT OS: GARUDA MOKKA