Public bug reported:

Laptop internal display shows random looking 'static' after it's turned
off and then on again.   e.g. on suspend/resume, or when
plugging/unplugging an external monitor.

This appeared to come after a `dist-upgrade` took the kernel from
5.11.0-44 to 5.13.0-25 (hwe).

Others are seeing this with both NVidia and AMD graphics hardware:
- 
https://www.reddit.com/r/Ubuntu/comments/s8c83w/laptop_shows_static_screen_after_going_into_lock/
- 
https://www.reddit.com/r/Ubuntu/comments/s8fit0/please_help_static_noise_display_on_ubuntu_2004/

I use i3 under gnome-flashback, but tried using default Ubuntu/Gnome
both X and Wayland, and gnome-flashback/metacity.  All showed the same
problem.

Also tried an `apt install --reinstall xserver-xorg-video-radeon libdrm-
radeon1` for luck - no joy.

Running a 20.04.3 live stick the problem does *not* occur.

System: Thinkpad X13 Gen1
Processor: AMD Ryzen 7 PRO 4750U
System Firmware: 1.35

$ lsb_release -rd
Description:    Ubuntu 20.04.3 LTS
Release:        20.04

Happy to assist with investigations.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.13.0-27.29~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: i3-GNOME-Flashback:GNOME-Flashback:GNOME
Date: Thu Jan 20 19:37:09 2022
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev d1) (prog-if 00 
[VGA controller])
   Subsystem: Lenovo Renoir [17aa:5082]
InstallationDate: Installed on 2021-06-24 (210 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 
(20210209.1)
MachineType: LENOVO 20UF0014US
ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-27-generic 
root=UUID=5db0269f-fa23-487e-ace8-ba99bca814a8 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/20/2021
dmi.bios.release: 1.36
dmi.bios.vendor: LENOVO
dmi.bios.version: R1CET67W(1.36 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20UF0014US
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.36
dmi.modalias: 
dmi:bvnLENOVO:bvrR1CET67W(1.36):bd10/20/2021:br1.36:efr1.36:svnLENOVO:pn20UF0014US:pvrThinkPadX13Gen1:rvnLENOVO:rn20UF0014US:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20UF_BU_Think_FM_ThinkPadX13Gen1:
dmi.product.family: ThinkPad X13 Gen 1
dmi.product.name: 20UF0014US
dmi.product.sku: LENOVO_MT_20UF_BU_Think_FM_ThinkPad X13 Gen 1
dmi.product.version: ThinkPad X13 Gen 1
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.105-3~20.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.3-0ubuntu0.3~20.04.5
version.libgl1-mesa-glx: libgl1-mesa-glx 21.0.3-0ubuntu0.3~20.04.5
version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1~20.04.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

** Affects: ubuntu
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug corruption focal third-party-packages ubuntu

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https://bugs.launchpad.net/bugs/1958591

Title:
  Random noise 'static' on internal display when turned off/on

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