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I noted this at https://askubuntu.com/questions/1449114/ubuntu-20-04-screen-green- flickering-lenovo-ideapad-s145-15ast I wonder if it's a problem related to the 'new' HDMI cable. I suggest booting a different OS, or different release of Ubuntu using 'live' media & seeing if the issue occurs there, ie. confirming it's related to Ubuntu, and not just the 'new HDMI cable'. Apologies if I've mis-understood your issue, -- 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/2001721 Title: [amdgpu] Ubuntu screen green flickering Status in linux package in Ubuntu: New Bug description: Hi i did use ubuntu for more than a year on this laptop last a few days i used HDMI cable, today for a few hours i did use a new cable "longer one" now suddenly my laptop display went green as you can see in the attachment i did some search but can't find solution. https://askubuntu.com/questions/1231441/ubuntu-screen-flickering/1250859#1250859 https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1883534 Ali ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.15.0-46.49~20.04.1-generic 5.15.39 Uname: Linux 5.15.0-46-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Wed Jan 4 22:41:41 2023 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: I just need to know a workaround GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Stoney [Radeon R2/R3/R4/R5 Graphics] [1002:98e4] (rev e2) (prog-if 00 [VGA controller]) Subsystem: Lenovo Stoney [Radeon R2/R3/R4/R5 Graphics] [17aa:3f1a] InstallationDate: Installed on 2021-12-20 (380 days ago) InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819) MachineType: LENOVO 81N3 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-46-generic root=UUID=52450c12-da25-47db-984c-a2036e93aff5 ro reboot=pci quiet splash acpi=force vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/27/2019 dmi.bios.release: 1.20 dmi.bios.vendor: LENOVO dmi.bios.version: AYCN20WW dmi.board.asset.tag: No Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: No DPK dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo IdeaPad S145-15AST dmi.ec.firmware.release: 1.20 dmi.modalias: dmi:bvnLENOVO:bvrAYCN20WW:bd11/27/2019:br1.20:efr1.20:svnLENOVO:pn81N3:pvrLenovoIdeaPadS145-15AST:rvnLENOVO:rnLNVNB161216:rvrNoDPK:cvnLENOVO:ct10:cvrLenovoIdeaPadS145-15AST:skuLENOVO_MT_81N3_BU_idea_FM_IdeaPadS145-15AST: dmi.product.family: IdeaPad S145-15AST dmi.product.name: 81N3 dmi.product.sku: LENOVO_MT_81N3_BU_idea_FM_IdeaPad S145-15AST dmi.product.version: Lenovo IdeaPad S145-15AST dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.107-8ubuntu1~20.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.6-0ubuntu0.1~20.04.2 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1~20.04.3 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/2001721/+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