https://bugs.freedesktop.org/show_bug.cgi?id=73530 --- Comment #52 from Paul Menzel --- Created attachment 93042 --> https://bugs.freedesktop.org/attachment.cgi?id=93042&action=edit `/var/log/kern.log` from 3.13 with debug and delay patch Here are the errors. [ 297.778990] [drm:radeon_dp_link_train], Before train_cr [ 297.794470] [drm:radeon_process_aux_ch], dp_aux_ch timeout [ 297.796597] [drm:radeon_dp_get_link_status], link status 00 00 80 00 00 00 [ 297.796604] [drm:dp_get_adjust_train], requested signal parameters: lane 0 voltage 0.4V pre_emph 0dB [ 297.796609] [drm:dp_get_adjust_train], using signal parameters: voltage 0.4V pre_emph 0dB [ 297.798313] [drm:radeon_dp_get_link_status], link status 00 00 00 00 00 00 [ 297.798318] [drm:dp_get_adjust_train], requested signal parameters: lane 0 voltage 0.4V pre_emph 0dB [ 297.798322] [drm:dp_get_adjust_train], using signal parameters: voltage 0.4V pre_emph 0dB [ 297.800044] [drm:radeon_dp_get_link_status], link status 00 00 00 00 00 00 [ 297.800048] [drm:dp_get_adjust_train], requested signal parameters: lane 0 voltage 0.4V pre_emph 0dB [ 297.800052] [drm:dp_get_adjust_train], using signal parameters: voltage 0.4V pre_emph 0dB [ 297.801762] [drm:radeon_dp_get_link_status], link status 00 00 00 00 00 00 [ 297.801766] [drm:dp_get_adjust_train], requested signal parameters: lane 0 voltage 0.4V pre_emph 0dB [ 297.801770] [drm:dp_get_adjust_train], using signal parameters: voltage 0.4V pre_emph 0dB [ 297.803490] [drm:radeon_dp_get_link_status], link status 00 00 00 00 00 00 [ 297.803494] [drm:dp_get_adjust_train], requested signal parameters: lane 0 voltage 0.4V pre_emph 0dB [ 297.803496] [drm:dp_get_adjust_train], using signal parameters: voltage 0.4V pre_emph 0dB [ 297.805187] [drm:radeon_dp_get_link_status], link status 00 00 00 00 00 00 [ 297.805190] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery tried 5 times [ 297.805194] [drm:radeon_dp_link_train_cr] *ERROR* clock recovery failed -- You are receiving this mail because: You are the assignee for the bug.