[Bug 101462] [SKL] External monitor shows no signal after unplugging and plugging the cable back into dock

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101462

--- Comment #16 from Ethan Hsieh <ethan.hsieh at canonical.com> ---
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

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