I re-installed ubuntu 19.04 and the amdgpu.dc=0 fixed it in the installer, also I tested with the default kernel (latest update) and can confirm amdgpu.dc=0 works on default kernel as well, so it isnt related to the kernel version.
The apport command doesnt run, it returns a command not found error, but apport IS installed. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/1837945 Title: AMD RX 570 Black Screen at boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1837945/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

