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[Felisa-Chen <1804425@xxxxxxxxxxxxxxxxxx>]

** Changed in: glance
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1804425

Title:
  Linux, Ubuntu, 18.04, X36CI, NB13, SUT flashes black screen when hot
  plug/unplug dock(FR:100%)

Status in Glance:
  Invalid

Bug description:
  Description:
  Boot to OS, then connect Salomon TBT3 dock to SUT and find SUT will flash black screen. Disconnect Salomon TBT3 dock and find SUT flashes black screen again.

  Expected Behavior:
  SUT doesn't flash black screen when hot plug/unplug Dock.

  Severity:
  Sev-2
  P3
  C3
  L1

  Test environment:
  1. Project:Northbay 13
  2. BIOS:0.4.1
  4. OS:CI Ubuntu 18.04
  5. Dock info: DOCK-126	REV-X00  Dell Salomon WD19TB Thunderbolt3 Dock DP/N 0XHKGV  Salomon_TBT3  FW:00.00.12

  Notes:
  1. VP on Northbay TBT&non-TBT sku
  2. VP on Salomon single-c cable Dock
  3. VP on BME dock(REV-A05 Dock-114  FW:0.1.17)
  4. VP on IE dock(REV-A05 Dock-110 FW:1.0.4)

  Cross Platform:
  NA

  Test case:
  [CSV-TC-5194][WIS-TC-4407] Linux_NB_Salomon-Wired-Dock-The Docked SUT "Plug/Unplug" Test  Step32

  Steps to Reproduce:
  1. Install Ubuntu OS 18.04.1 LTS
  2. Boot to OS and connect Salomon Dock to SUT,find SUT will flash black screen.-->Problem(refer to video)
  3. Disconnect Salomon dock and find SUT flashes black screen again.

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