Public bug reported:

After the unit got into suspend mode, when pressing the power button to
turn it on and entering the password, a black stripe appears on the
screen for about 0.4~~1 seconds before disappearing.

[Steps to reproduce]

Install the ISO.

enter into the suspend mode with DC mode.

resume from the suspend and input the password, a black stripe shows on
the display.

[Expected result]

not show black stripe

[Actual result]

a black stripe shows on the display

[Failure rate]

3/5

Image: Ubuntu 22.04.5 LTS

bios-version: 1.10.0

CPU: AMD/Intel

GPU: AMD/Intel

kernel-version: 6.8.0.49-Gengeric

Isolation:

Fail on reflash rate setting to 60Hz or 59.98Hz

Fi pilot level(Ubuntu 22.04.5 LTS,kernel 6.8.0-49-generic) +BIOS
1.12.1/1.11.1 -->Fail

Handbuild (Ubuntu 22.04.5 LTS,kernel 6.8.0-40-generic) +BIOS
1.12.1/1.11.1 -->Fail

Handbuild (Ubuntu 22.04.4 LTS,kernel 6.5.0-18-generic) +BIOS
1.12.1/1.11.1 -->Fail

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "CPL-339.zip"
   
https://bugs.launchpad.net/bugs/2171562/+attachment/6011154/+files/CPL-339.zip

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https://bugs.launchpad.net/bugs/2171562

Title:
  When the SUT exits suspend mode via power button and completes
  password login, a black stripe shows on the display.

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