It's *probably* a kernel bug and probably already fixed in a newer kernel. So you might want to try one of those:
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=M;O=D -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888571 Title: [Ice Lake] Screen flickering and glitching after install Status in linux package in Ubuntu: Confirmed Bug description: Intel integrated driver causes screen flickering with Ubuntu install. Windows did not have this issue ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Wed Jul 22 15:41:42 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Iris Plus Graphics G7 [8086:8a52] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Iris Plus Graphics G7 [103c:875a] InstallationDate: Installed on 2020-07-22 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: HP HP ENVY Laptop 13-ba0xxx ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=9f807172-2b35-4ad1-9f33-5a912ad7c579 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/04/2020 dmi.bios.vendor: Insyde dmi.bios.version: F.10 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 875A dmi.board.vendor: HP dmi.board.version: 07.34 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.10:bd06/04/2020:svnHP:pnHPENVYLaptop13-ba0xxx:pvrType1ProductConfigId:rvnHP:rn875A:rvr07.34:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV HP Envy dmi.product.name: HP ENVY Laptop 13-ba0xxx dmi.product.sku: 8KD13AV dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.101-2 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888571/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
