<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - REGRESSION: black screen with linux 5.0 when starting X" href="https://bugs.freedesktop.org/show_bug.cgi?id=109959#c14">Comment # 14</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - REGRESSION: black screen with linux 5.0 when starting X" href="https://bugs.freedesktop.org/show_bug.cgi?id=109959">bug 109959</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to Ville Syrjala from <a href="show_bug.cgi?id=109959#c13">comment #13</a>) > [ 4.724103] [drm:intel_dp_start_link_train [i915]] [CONNECTOR:85:eDP-1] > Link Training failed at link rate = 432000, lane count = 1 > [ 4.724139] [drm:intel_dp_modeset_retry_work_fn [i915]] > [CONNECTOR:85:eDP-1] > ... > [ 5.863904] [drm:intel_dp_start_link_train [i915]] [CONNECTOR:85:eDP-1] > Link Training failed at link rate = 324000, lane count = 1 > [ 5.863939] [drm:intel_dp_get_link_train_fallback_values [i915]] Retrying > Link training for eDP with same parameters > ... > > So link training no longer works for whatever reason. Ah yes it's the fast and narrow vs. wide and slow thing. [ 3.263107] [drm:intel_dp_init_connector [i915]] eDP DPCD: 04 93 a6 So this is a eDP 1.4a sink, which means we'll go for the fast and narrow instead of the old wide and slow apporach.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>