Hi I experience random lock-ups when X starts. It appears as system freeze just after X switch to graphic mode. /var/log/messages contains: Mar 17 23:33:24 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* displayport link status failed Mar 17 23:33:24 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* clock recovery failed Mar 17 23:33:24 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* displayport link status failed Mar 17 23:33:24 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* clock recovery failed Mar 17 23:33:25 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* displayport link status failed Mar 17 23:33:25 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* clock recovery failed Mar 17 23:33:25 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* displayport link status failed Mar 17 23:33:25 desktop64 kernel: [drm:amdgpu_atombios_dp_link_train] *ERROR* clock recovery failed Tested under https://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-4.17-wip with amddc disabled. Video card - Radeon RX580
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