[Bug 101314] [DP] [SKL] [BDW] Auido process is lost after hotplug event through MST dongle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101314

--- Comment #11 from Elizabeth <elizabethx.de.la.torre.mena at intel.com> ---
(In reply to Dhinakaran Pandiyan from comment #10)
> Ricardo,
> 
> Since you've closed https://bugs.freedesktop.org/show_bug.cgi?id=101461, the
> display should come up after plugging it back in this case too. Can you
> please retest?
Hello Dhinakaran, 
I tested it again and was able to easily reproduce it on SKL with MST hub
connected directly to DP, in the output side I only connected ONE DP display
and nothing else. Then I disconnected the DP cable and when I connected it
again the login screen appears in display, no sound reproducing. Then I logged
in and the terminal was closed as described in comment #1. 

======================================
             Software
======================================
kernel version              : 4.14.0-rc2-drm-tip-ww39-commit-f4bd0d1+
architecture                : x86_64
os version                  : Ubuntu 17.04
os codename                 : zesty
kernel driver               : i915
bios revision               : 5.6
bios release date           : 09/29/2016

======================================
        Graphic drivers
======================================
mesa                        : 17.0.3
modesetting                 : modesetting_drv.so
xorg-xserver                : 1.19.3
libdrm                      : 2.4.81
cairo                       : 1.14.8
xserver                     : X.Org X Server 1.19.99.1
intel-gpu-tools (tag)       : intel-gpu-tools-1.18-211-g00ce341b
intel-gpu-tools (commit)    : 00ce341b

======================================
             Hardware
======================================
platform                   : SKL Canyon
motherboard id             : NUC6i7KYB
form factor                : Desktop
cpu family                 : Core i7
cpu family id              : 6
cpu information            : Intel(R) Core(TM) i7-6770HQ CPU @ 2.60GHz
gpu card                   : Intel Corporation Iris Pro Graphics 580 (rev 09)
(prog-if 00 [VGA controller])
memory ram                 : 31.31 GB
max memory ram             : 32 GB
display resolution         : 1600x900
cpu thread                 : 8
cpu core                   : 4
cpu model                  : 94
cpu stepping               : 3
socket                     : Other
signature                  : Type 0, Family 6, Model 94, Stepping 3
hard drive                 : 223GiB (240GB)
current cd clock frequency : 450000 kHz
maximum cd clock frequency : 675000 kHz
displays connected         : DP-5

======================================
             Firmware
======================================
dmc fw loaded             : yes
dmc version               : 1.26
guc fw loaded             : NONE
guc version wanted        : 0.0
guc version found         : 0.0

======================================
             kernel parameters
======================================
quiet splash fastboot drm.debug=0xe

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