ACPI errors are theoretically BIOS bugs, not Linux bugs. Although the fact that you can see the messages is bug 1970069.
Since it sounds like the flickering has stopped we can mark this as a duplicate of bug 1958191. -- 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/1986976 Title: At all startup time with recently installed 22.04.1 LTS screen flashing occurs, only close of the laptop screen stops tyhe flashing and allows to correctly login. Status in linux package in Ubuntu: Incomplete Bug description: I do remember such BIOS related issues back in 2019 for now I do have the list of the kernel error messages --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu82.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: labdom 3949 F.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 22.04 InstallationDate: Installed on 2019-07-15 (1130 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 8087:0029 Intel Corp. AX200 Bluetooth Bus 001 Device 003: ID 04d9:0499 Holtek Semiconductor, Inc. Optical Mouse Bus 001 Device 002: ID 04f2:b59e Chicony Electronics Co., Ltd Chicony USB2.0 Camera Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Notebook N7x0WU Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-46-generic root=UUID=ea604268-2faf-42c2-abf5-69e0de92b334 ro quiet splash acpi=force vt.handoff=7 ProcVersionSignature: Ubuntu 5.15.0-46.49-generic 5.15.39 RelatedPackageVersions: linux-restricted-modules-5.15.0-46-generic N/A linux-backports-modules-5.15.0-46-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.4 Tags: jammy wayland-session Uname: Linux 5.15.0-46-generic x86_64 UpgradeStatus: Upgraded to jammy on 2022-08-17 (2 days ago) UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/06/2018 dmi.bios.release: 7.12 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 7.12 dmi.board.asset.tag: Tag 12345 dmi.board.name: N7x0WU dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.ec.firmware.release: 7.13 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr7.12:bd09/06/2018:br7.12:efr7.13:svnNotebook:pnN7x0WU:pvrNotApplicable:rvnNotebook:rnN7x0WU:rvrNotApplicable:cvnNoEnclosure:ct10:cvrN/A:skuNotApplicable: dmi.product.family: Not Applicable dmi.product.name: N7x0WU dmi.product.sku: Not Applicable dmi.product.version: Not Applicable dmi.sys.vendor: Notebook To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1986976/+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
