@jose: It seems that I already have installed a "amdgpu_drv.so" containing your mentioned patch.
My package manager claims that I have installed "xserver-xorg-video-amdgpu-hwe-18.04_19.0.1-1ubuntu1~18.04.1_amd64.deb" with version "19.0.1-1ubuntu1~18.04.1". I compared the binary deb-package of my local apt-archive with the package provided at launchpad.net and tracked the originating sources. They already contain the patch. Unfortunately it seems that the patch does not work for me.
@jose: It seems that I already have installed a "amdgpu_drv.so" containing your mentioned patch.
My package manager claims that I have installed "xserver- xorg-video- amdgpu- hwe-18. 04_19.0. 1-1ubuntu1~ 18.04.1_ amd64.deb" with version "19.0.1- 1ubuntu1~ 18.04.1" . I compared the binary deb-package of my local apt-archive with the package provided at launchpad.net and tracked the originating sources. They already contain the patch. Unfortunately it seems that the patch does not work for me.