Thanks for the bug report. 1. Are you able to attach a video of the problem?
2. Please try selecting 'Ubuntu on Wayland' on the login screen just before you enter your password (icon in the bottom right corner of the screen). Does the problem persist after that? 3. Please try some slightly older/newer kernel versions and tell us if they have the same issue: https://kernel.ubuntu.com/~kernel- ppa/mainline/?C=M;O=D ** Package changed: xorg (Ubuntu) => linux-hwe-5.8 (Ubuntu) ** Changed in: linux-hwe-5.8 (Ubuntu) Status: New => Incomplete ** Summary changed: - Intel UHD Graphics 620 + [Lenovo ideapad 720S-13IKB] Flickering display -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1921637 Title: [Lenovo ideapad 720S-13IKB] Flickering display Status in linux-hwe-5.8 package in Ubuntu: Incomplete Bug description: Running Ubuntu 20.04.2 LTS. Having consistent screen flickering on my display. No issues on Windows, only on Linux OS. The screen glitches and flickers consistently regardless of what I do. Straight from booting into user selection screen. The BIOS (Lenovo) Logo does not flicker, only once Linux is loaded that flickering begins. I have a 4k display on my laptop, and I have tried running 1080p 120Hz / 60Hz, 4K whatever. The flickering never stops. Any help would be greatly appreciated I'm happy to send dmesg or any extra debugging necessary. After intensive research and asking other forums, it has been said that the issue is with the Intel Driver, specifically the above package reported. Many thanks, Hubert ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.8.0-48.54~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-48-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sun Mar 28 18:30:01 2021 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo UHD Graphics 620 [17aa:39af] InstallationDate: Installed on 2021-02-16 (40 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0cf3:e500 Qualcomm Atheros Communications Bus 001 Device 002: ID 04f2:b5da Chicony Electronics Co., Ltd EasyCamera Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 81BV ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-48-generic root=UUID=7e3f2c74-1dfc-4aaf-a7e4-72d6f98b56b2 ro quiet splash drm.debug=0x1e log_buf_len=10M vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/02/2018 dmi.bios.release: 1.27 dmi.bios.vendor: LENOVO dmi.bios.version: 6MCN27WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0R32862 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo ideapad 720S-13IKB dmi.ec.firmware.release: 1.27 dmi.modalias: dmi:bvnLENOVO:bvr6MCN27WW:bd05/02/2018:br1.27:efr1.27:svnLENOVO:pn81BV:pvrLenovoideapad720S-13IKB:rvnLENOVO:rnLNVNB161216:rvrSDK0R32862WIN:cvnLENOVO:ct10:cvrLenovoideapad720S-13IKB: dmi.product.family: ideapad 720S-13IKB dmi.product.name: 81BV dmi.product.sku: LENOVO_MT_81BV_BU_idea_FM_ideapad 720S-13IKB dmi.product.version: Lenovo ideapad 720S-13IKB dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.102-1ubuntu1~20.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.1 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-hwe-5.8/+bug/1921637/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
