<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [HD Graphics 4000] Garbage on screen on Samsung NP900X3E-A02" href="https://bugs.freedesktop.org/show_bug.cgi?id=64332#c20">Comment # 20</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [HD Graphics 4000] Garbage on screen on Samsung NP900X3E-A02" href="https://bugs.freedesktop.org/show_bug.cgi?id=64332">bug 64332</a> from <a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> Jani Nikula</a> <pre>The link training looks suspicious: [ 9.709342] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on [ 9.709347] [drm:ironlake_wait_panel_power_cycle], Wait for panel power cycle [ 9.709357] [drm:ironlake_wait_panel_status], mask b800000f value 00000000 status 00000000 control abcd0000 [ 9.709366] [drm:ironlake_edp_panel_vdd_on], PP_STATUS: 0x00000000 PP_CONTROL: 0xabcd0008 [ 9.709368] [drm:ironlake_edp_panel_vdd_on], eDP was not running [ 9.765619] [drm:intel_dp_set_signal_levels], Using signal levels 09000000 [ 9.767082] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000 [ 9.768537] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000 [ 9.770000] [drm:intel_dp_set_signal_levels], Using signal levels 09000000 [ 9.771453] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000 [ 9.772900] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000 [ 9.774341] [drm:intel_dp_set_signal_levels], Using signal levels 09000000 [ 9.775778] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000 [ 9.777214] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000 [ 9.778650] [drm:intel_dp_set_signal_levels], Using signal levels 09000000 [ 9.780093] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000 [ 9.781529] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000 [ 9.782967] [drm:intel_dp_set_signal_levels], Using signal levels 09000000 [ 9.784409] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000 [ 9.785842] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000 [ 9.787314] [drm:intel_dp_start_link_train], too many full retries, give up [ 9.787317] [drm:ironlake_edp_panel_on], Turn eDP power on [ 9.787321] [drm:ironlake_wait_panel_power_cycle], Wait for panel power cycle [ 9.787329] [drm:ironlake_wait_panel_status], mask b800000f value 00000000 status 00000000 control abcd0008 [ 9.787335] [drm:ironlake_wait_panel_on], Wait for panel power on [ 9.787342] [drm:ironlake_wait_panel_status], mask b000000f value 80000008 status 0000000a control abcd000b [ 10.039218] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1 [ 10.039230] [drm:ironlake_panel_vdd_off_sync], PP_STATUS: 0x80000008 PP_CONTROL: 0xabcd0003 [ 10.062561] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000 [ 10.064366] [drm:intel_dp_complete_link_train], Channel EQ done. DP Training successfull</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>