<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [BDW Bisected MST] no fbcon on DP Hot plug, loss of signal" href="https://bugs.freedesktop.org/show_bug.cgi?id=81903#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED --- - [BDW Bisected MST] no fbcon on DP Hot plug, loss of signal" href="https://bugs.freedesktop.org/show_bug.cgi?id=81903">bug 81903</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>I guess it is related to: [ 225.976720] [drm:intel_mst_pre_enable_dp] 0 [ 225.976821] [drm:intel_dp_check_mst_status] got esi2 02 00 00 [ 225.976824] [drm:intel_dp_check_mst_status] got esi 02 00 00 [ 225.977932] [drm:intel_dp_set_signal_levels] Using signal levels 00000000 [ 225.979416] [drm:intel_dp_set_signal_levels] Using signal levels 01000000 [ 225.980925] [drm:intel_dp_start_link_train] clock recovery OK [ 225.983522] [drm:intel_dp_complete_link_train] Channel EQ done. DP Training successful [ 225.983686] [drm:drm_dp_mst_allocate_vcpi] initing vcpi for 619 16 [ 225.990866] [drm:drm_dp_dpcd_access] too many retries, giving up [ 225.990869] [drm:drm_dp_dpcd_write_payload] failed to read payload table status -5 [ 225.990923] [drm:intel_mst_enable_dp] 1 [ 225.999364] [drm:drm_dp_dpcd_access] too many retries, giving up [ 225.999366] [drm:drm_dp_check_act_status] failed to read payload table status -5 [ 225.999368] [drm:drm_dp_update_payload_part2] payload 0 0 [ 226.010408] [drm:intel_hpd_irq_handler] hotplug event received, stat 0x00200000, dig 0x10101011 [ 226.010411] [drm:intel_hpd_irq_handler] digital hpd port 1 0 [ 226.010420] [drm:intel_dp_hpd_pulse] got hpd irq on port 1 - short [ 226.010692] [drm:intel_dp_check_mst_status] channel EQ not ok, retraining [ 226.011636] [drm:intel_dp_set_signal_levels] Using signal levels 00000000 [ 226.013135] [drm:intel_dp_set_signal_levels] Using signal levels 01000000 [ 226.014614] [drm:intel_dp_start_link_train] clock recovery OK [ 226.017506] [drm:intel_dp_complete_link_train] Channel EQ done. DP Training successful [ 226.017669] [drm:intel_dp_check_mst_status] got esi 02 00 00 which includes both MST failure and link success. Now to figure what the errors mean.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>