<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][BAT] igt@gem_exec_suspend@basic-s3 - dmesg-warn - *ERROR* failed to enable link training" href="https://bugs.freedesktop.org/show_bug.cgi?id=109530#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][BAT] igt@gem_exec_suspend@basic-s3 - dmesg-warn - *ERROR* failed to enable link training" href="https://bugs.freedesktop.org/show_bug.cgi?id=109530">bug 109530</a> from <a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> Imre Deak</a> <pre>The problem is that the eDP panel is used as a DP output (due to the lack of a correct VBT). That in turn means we'll not enable VDD (which is an eDP specific thing). That is most probably the reason for the link training failure for which we normally keep VDD enabled. The problem only triggers after an S3 suspend/resume cycle because before that we happen to have VDD enabled, left as such by BIOS. I think we shouldn't add more hacks for systems without VBT to fix this, rather wait for the VBT fix itself.</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>