by Bryanpwo
If your Nvidia card isn’t supported anymore by the proprietary nvidia driver, you can use the open-source driver provided by Linux.
Only in case you have a very old Nvidia GPU use the nouveau driver provided by the package xf86-video-nouveau, It is most likely this package will cause tearing and bad performance on GPU from the last 6 years, so it is better to use the modesetting driver shipped by default in the Linux kernel. To enable it, you just have to uninstall the unneeded package and change the following configuration.
sudo pacman -R xf86-video-nouveau
sudo nano /etc/kernel/cmdline
Add nouveau to the line as an additional option.
Save it with [CTRL+X]
To add the option to initramfs image, run: sudo reinstall-kernels (if using systemd-boot)
For Grub use sudo dracut-rebuild
Reboot and your system is running with nouveau modesetting driver.
In some cases, the video quality has a delay or glitches, especially with DRM encoded videos on services as Netflix for example.
In that case, try to install the nouveau-fw package (AUR) – after install reboot the system.