<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Regression with Dell TB16 dock and Linux kernel 4.16.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=106250#c35">Comment # 35</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Regression with Dell TB16 dock and Linux kernel 4.16.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=106250">bug 106250</a> from <a class="email" href="mailto:stanislav.lisovskiy@intel.com" title="Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>"> Stanislav Lisovskiy</a> <pre>(In reply to Lakshmi from <a href="show_bug.cgi?id=106250#c34">comment #34</a>) > (In reply to Benjamin Berg from <a href="show_bug.cgi?id=106250#c31">comment #31</a>) > > (In reply to Stanislav Lisovskiy from <a href="show_bug.cgi?id=106250#c30">comment #30</a>) > > > Do you mean, that it comes back properly without the patch? > > > > Yeah. I had a user on F29 where the display on the dock could not be > > configured anymore (X11, cinamon, T480s, Thunderbolt dock, after being away > > for an hour). However, this only happened exactly once. Since then neither > > the user nor myself have been able to reproduce the issue using different > > setups. > > Do you still have this issue with latest drmtip? I checked it. I also checked again - and it seems that mostly the issue is on the user space side. When this happens, kernel detects and reports everything correnctly. I checked that we get correspondent uevent, and also GET_CONNECTOR ioctls show correct output statuses. I traced the issue up to the point when intel ddx driver sends an update to desktop manager, which however doesn't trigger a modeset. I think it most likely gets confused because kernel allocates and new connector id, each time DP MST device is connected or disconnected, however as I understand this is the way currently, how it is supposed to work.</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> </ul> </body> </html>