Just noticed how easy it was to setup my new HP laptop graphics drivers.
Antergos installer correctly added drivers (xf86-video-ati and xf86-video-intel) during install, which was great.
The Intel driver is handling the graphics of apps by default.
But for using the power of the discrete card (AMD Radeon HD8690, Sun XT), I created a simple script using this command:
sudo echo 'DRI_PRIME=1 "[email protected]"' > /usr/local/bin/discrete
Now I can use the discrete command like this:
discrete glxinfo | grep "OpenGL renderer"
Compare the outputs of that and this command:
glxinfo | grep "OpenGL renderer"
I looked at https://wiki.archlinux.org/index.php/PRIME for some help, but I didn’t have to do any additional settings to have all working. I didn’t have to put anything into /etc/X11/xorg.conf.d nor /etc/modprobe.d. And did nothing with xrandr.