<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [Baytrail-M edp] link training failures on resume" href="https://bugs.freedesktop.org/show_bug.cgi?id=69250#c7">Comment # 7</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [Baytrail-M edp] link training failures on resume" href="https://bugs.freedesktop.org/show_bug.cgi?id=69250">bug 69250</a> from <a class="email" href="mailto:yangweix.shui@intel.com" title="shui yangwei <yangweix.shui@intel.com>"> shui yangwei</a> <pre>Created <a href="attachment.cgi?id=87365" name="attach_87365" title="dmesg: with new CPU and updated BIOS">attachment 87365</a> <a href="attachment.cgi?id=87365&action=edit" title="dmesg: with new CPU and updated BIOS">[details]</a> dmesg: with new CPU and updated BIOS (In reply to <a href="show_bug.cgi?id=69250#c6">comment #6</a>) > The original BYT dmesg is filled with display port link training issues. > It's obvious the resume time goes ballistic if we keep retrying the link > training. > > Also note that we get the panel power sequencing timings from VBT, so the > panel enable time even with the same panel is going to be different between > HSW and BYT. > > I've fixed a number of DP link training issues lately. Please try the latest > drm-intel-nightly on BYT, and see if that helps. Attach dmesg with debugs > enabled if it still fails. Thanks. We updated our cpu to "VGA Gen 7 id=0f31", and BIOS updated to "v61.R22 X64", then I use latest -nightly and find eDP resume time is similar with HSW Desktop now. Acquire initcall time: 1386.488 msecs (HSW Desktop: 1599.312 msecs) Acquire suspend time: 825.701 msecs (HSW Desktop: 1018.271 msecs) Acquire resume time: 767.916 msecs (HSW Desktop: 576.649 msecs)</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>