Kernel Command line: BOOT_IMAGE=/vmlinuz-4.20.0-042000-generic root=/dev/mapper/ubuntu-vg-root ro quiet splash radeon.si_support=0 radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1 amdgpu.dc=1 This is with the latest stable mesa driver and the amdgpu drm driver in-kernel.Ĥ.19.x and 4.20.x results in failed boots or it doesn't boot at all (black screen after grub, no tty).ĭepending on the grub linux commandline parameters, I was able to get an unstable desktop booting to further investigate and gather state evidence. The last fully functioning kernel version is 4.18.20 The R9-290/290X Hawaii range of cards do not work with Linux kernels 4.19.x and 4.20.x in ubuntu 18
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