<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL] External monitor shows no signal after unplugging and plugging the cable back into dock" href="https://bugs.freedesktop.org/show_bug.cgi?id=101462#c16">Comment # 16</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [SKL] External monitor shows no signal after unplugging and plugging the cable back into dock" href="https://bugs.freedesktop.org/show_bug.cgi?id=101462">bug 101462</a> from <a class="email" href="mailto:ethan.hsieh@canonical.com" title="Ethan Hsieh <ethan.hsieh@canonical.com>"> Ethan Hsieh</a> <pre>Hi Dhinakaran, Cannot reproduce the issue on Ubuntu 17.04. I plugged DP cable into Dell dock, and then powered on the laptop. The connector was DP-4 at the beginning. After I unplugged/re-plugged the cable, the connector became DP-5. Kernel log: [ 1.338086] [CONNECTOR:47:eDP-1] status updated from unknown to connected [ 1.350575] [CONNECTOR:55:DP-1] status updated from unknown to disconnected [ 1.358484] [CONNECTOR:59:HDMI-A-1] status updated from unknown to disconnected [ 1.358512] [CONNECTOR:62:DP-2] status updated from unknown to disconnected [ 1.367289] [CONNECTOR:66:HDMI-A-2] status updated from unknown to disconnected [ 1.847881] [CONNECTOR:70:DP-4] status updated from unknown to connected [ 1.904567] [CONNECTOR:72:DP-5] status updated from unknown to disconnected [ 82.058623] [CONNECTOR:70:DP-4] status updated from connected to disconnected [186.725465] [CONNECTOR:72:DP-5] status updated from unknown to connected [334.655928] [CONNECTOR:72:DP-5] status updated from connected to disconnected [351.634776] [CONNECTOR:81:DP-5] status updated from unknown to connected [761.560720] [CONNECTOR:81:DP-5] status updated from connected to disconnected [771.915903] [CONNECTOR:77:DP-5] status updated from unknown to connected [803.292530] [CONNECTOR:77:DP-5] status updated from connected to disconnected [928.971164] [CONNECTOR:82:DP-5] status updated from unknown to connected [956.660962] [CONNECTOR:82:DP-5] status updated from connected to disconnected [975.964273] [CONNECTOR:84:DP-5] status updated from unknown to connected $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 17.04 Release: 17.04 Codename: zesty</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>