<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - DisplayPort over USB-C not working after resume" href="https://bugs.freedesktop.org/show_bug.cgi?id=109059#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - DisplayPort over USB-C not working after resume" href="https://bugs.freedesktop.org/show_bug.cgi?id=109059">bug 109059</a> from <a class="email" href="mailto:stanislav.lisovskiy@intel.com" title="Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>"> Stanislav Lisovskiy</a> <pre>This looks similar to <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Regression with Dell TB16 dock and Linux kernel 4.16.x" href="show_bug.cgi?id=106250">https://bugs.freedesktop.org/show_bug.cgi?id=106250</a> actually. Problem is that DP MST each time gets reassigned with a new connector id, which might confuse userspace, depending on timing and luck. Currently there is no official fix, as the fix which I proposed, was told to have some other side effects. However you can try it anyway, just to confirm that this is same kind of bug. So please try a "kernel fix" attached to the bug above. The real fix is to reuse connector ids, which requires some DP MST connector life span changes.</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 assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>