I recently upgraded my gpu from an RX 480 to an RX 5700, on Windows everything went smoothly; the system booted and I was able to install the proper drivers. On Manjaro though... Not so easy.
Grub keeps working just fine, but I just can't get the new gpu to display anything on Manjaro. Whether it gets a black screen or gets stuck with my motherboards logo... I even tried to boot on a live usb, which works fine with the RX 480, but my 5700 just gets stuck after loading AppArmor stuff...
I removed all my old drivers, but still couldn't get anything to display, not even tty, so I entered the tty with my old card (ofcourse then it did work just fine), installed the free drivers with mhwd and Manjaro boots fine again, with the RX 480 that is... Still absolutely nothing with the 5700.
I'm running kernel 5.4.4 if I'm not mistaken and I created the live usb yesterday, so I'm pretty sure everything should work in theory.