Public bug reported:
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
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal ubuntu
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1921637
Title:
Intel UHD Graphics 620
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1921637/+subscriptions
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