*** This bug is a duplicate of bug 1958412 ***
    https://bugs.launchpad.net/bugs/1958412

+1, I have the same issue as here, and not #1958412 (grub workaround
described there doesn't fix the issue). Though maybe it is marked as
duplicate if the underlying issue is the same in both cases...

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-hwe-5.13 in Ubuntu.
https://bugs.launchpad.net/bugs/1958591

Title:
  [amdgpu] Random noise 'static' display after internal display turned
  off/on

Status in linux-hwe-5.13 package in Ubuntu:
  Confirmed

Bug description:
  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

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