The small window boxes are unstable, so they keep changing their color. I have taken screenshots and uploaded them here: https://mega.nz/folder/pctAQaSa#NcHgtpiwKIZs7Alm51f6sA (If you need, I can share the video recording of the screen).
The screenshots are for the app BreakTimer, but the issue also happens for other apps, e.g., Zoom. During Zoom meeting, when I share my screen, the small window box containing my and other person's video suffer from this issue, i.e., this small window keeps changing colors. I am then hardly able to see myself or other person in the video and have to hide the video to concentrate.
The problem most probably appeared after a recent update. Here, is the relevant information from '/var/log/apt/history.log' file:
Start-Date: 2022-02-18 08:20:57
Commandline: aptdaemon role='role-commit-packages' sender=':1.331'
Install: linux-modules-extra-5.13.0-30-generic:amd64 (5.13.0-30.33~20.04.1, automatic), linux-modules-5.13.0-30-generic:amd64 (5.13.0-30.33~20.04.1, automatic), linux-headers-5.13.0-30-generic:amd64 (5.13.0-30.33~20.04.1, automatic), linux-hwe-5.13-headers-5.13.0-30:amd64 (5.13.0-30.33~20.04.1, automatic), linux-image-5.13.0-30-generic:amd64 (5.13.0-30.33~20.04.1, automatic)
Upgrade: linux-headers-generic-hwe-20.04:amd64 (5.13.0.28.31~20.04.15, 5.13.0.30.33~20.04.17), libdrm-nouveau2:amd64 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), libdrm-nouveau2:i386 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), linux-libc-dev:amd64 (5.4.0-99.112, 5.4.0-100.113), libegl1-mesa-dev:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), libegl-mesa0:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), signal-desktop:amd64 (5.30.0, 5.32.0), libglapi-mesa:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), snapd:amd64 (2.51.1+20.04ubuntu2, 2.54.3+20.04.1), ubuntu-advantage-tools:amd64 (27.5~20.04.1, 27.6~20.04.1), libarchive13:amd64 (3.4.0-2ubuntu1, 3.4.0-2ubuntu1.1), google-chrome-stable:amd64 (98.0.4758.80-1, 98.0.4758.102-1), python-apt-common:amd64 (2.0.0ubuntu0.20.04.6, 2.0.0ubuntu0.20.04.7), libxatracker2:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), language-pack-en:amd64 (1:20.04+20210802, 1:20.04+20220211), initramfs-tools-bin:amd64 (0.136ubuntu6.6, 0.136ubuntu6.7), linux-image-generic-hwe-20.04:amd64 (5.13.0.28.31~20.04.15, 5.13.0.30.33~20.04.17), libgbm1:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), linux-generic-hwe-20.04:amd64 (5.13.0.28.31~20.04.15, 5.13.0.30.33~20.04.17), libxnvctrl0:amd64 (470.57.01-0ubuntu0.20.04.2, 470.57.01-0ubuntu0.20.04.3), libdrm-amdgpu1:amd64 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), libdrm-amdgpu1:i386 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), ubuntu-drivers-common:amd64 (1:0.9.0~0.20.04.4, 1:0.9.0~0.20.04.5), python3-distupgrade:amd64 (1:20.04.36, 1:20.04.37), ubuntu-release-upgrader-core:amd64 (1:20.04.36, 1:20.04.37), libdrm2:amd64 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), libdrm2:i386 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), libgl1-mesa-dev:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), libgl1-mesa-dri:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), language-pack-en-base:amd64 (1:20.04+20210802, 1:20.04+20220211), ubuntu-release-upgrader-gtk:amd64 (1:20.04.36, 1:20.04.37), libdrm-intel1:amd64 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), libdrm-radeon1:amd64 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), libdrm-radeon1:i386 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1), mesa-vdpau-drivers:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), mesa-vdpau-drivers:i386 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), linux-firmware:amd64 (1.187.25, 1.187.26), mesa-vulkan-drivers:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), initramfs-tools-core:amd64 (0.136ubuntu6.6, 0.136ubuntu6.7), initramfs-tools:amd64 (0.136ubuntu6.6, 0.136ubuntu6.7), python3-apt:amd64 (2.0.0ubuntu0.20.04.6, 2.0.0ubuntu0.20.04.7), mesa-va-drivers:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), libglx-mesa0:amd64 (21.0.3-0ubuntu0.3~20.04.5, 21.2.6-0ubuntu0.1~20.04.1), libdrm-common:amd64 (2.4.105-3~20.04.2, 2.4.107-8ubuntu1~20.04.1)
End-Date: 2022-02-18 08:24:41
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.13.0-30.33~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-30-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Feb 21 16:35:12 2022
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] [1002:15dd] (rev c3) (prog-if 00 [VGA controller])
Subsystem: Lenovo Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] [17aa:506f]
InstallationDate: Installed on 2021-04-25 (302 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
MachineType: LENOVO 20KV000DGE
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-30-generic root=UUID=64e9c457-f3da-4328-89d4-2e3b8e071f50 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/17/2020
dmi.bios.release: 1.58
dmi.bios.vendor: LENOVO
dmi.bios.version: R0UET78W (1.58 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KV000DGE
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: 1.58
dmi.modalias: dmi:bvnLENOVO:bvrR0UET78W(1.58):bd11/17/2020:br1.58:efr1.58:svnLENOVO:pn20KV000DGE:pvrThinkPadE585:rvnLENOVO:rn20KV000DGE:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20KV_BU_Think_FM_ThinkPadE585:
dmi.product.family: ThinkPad E585
dmi.product.name: 20KV000DGE
dmi.product.sku: LENOVO_MT_20KV_BU_Think_FM_ThinkPad E585
dmi.product.version: ThinkPad E585
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.107-8ubuntu1~20.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.6-0ubuntu0.1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
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
