<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][SKL only] igt@* - dmesg-warn - *ERROR* failed to enable link training" href="https://bugs.freedesktop.org/show_bug.cgi?id=105998#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][SKL only] igt@* - dmesg-warn - *ERROR* failed to enable link training" href="https://bugs.freedesktop.org/show_bug.cgi?id=105998">bug 105998</a> from <a class="email" href="mailto:bugzilla@colorremedies.com" title="Chris Murphy <bugzilla@colorremedies.com>"> Chris Murphy</a> <pre>Created <a href="attachment.cgi?id=141573" name="attach_141573" title="dmesg, drm.debug=0xe">attachment 141573</a> <a href="attachment.cgi?id=141573&action=edit" title="dmesg, drm.debug=0xe">[details]</a> dmesg, drm.debug=0xe I'm seeing this on 00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device [103c:81a0] [12446.213836] f29h.local kernel: [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training [12446.213959] f29h.local kernel: [drm:intel_dp_start_link_train [i915]] [CONNECTOR:79:DP-1] Link Training failed at link rate = 162000, lane count = 4 [12446.214211] f29h.local kernel: [drm:intel_dp_modeset_retry_work_fn [i915]] [CONNECTOR:79:DP-1] 4.19.0-0.rc3.git2.1.fc30.x86_64 which is git 54eda9df17f3. So far it's only happening on wake from S3, possibly the connected external display itself hasn't come out of power save at the initial link training? Subsequent link training appears to be OK. On the primary display at about this time (hard to say), there is a flicker at GDM (GNOME login). I can't tell if it's related.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>