Public bug reported: The screen on my HP AIO computer flickers. I'm able to browse the computer, but it's giving me headache.
Flickering consists pattern of 2cm height white vertical pixel lines (1*Wpx white and 1*Wpx transparent lines) and 2cm transparent section. Flicker also has 1px lines with dashes ending them about 10cm from left of the screen and 2cm from right of the screen. Mathematically letter W being 100% of screen width in above description. Flickering seems to be consistent to screen refresh state (~60Hz). Changing refresh rate does not affect in to amount of flickering. Same thing not happening in Windows nor BIOS. Even though this looks a LOT like a hardware/wiring issue. Also the problem is visible in Ubuntu installer, but not in graphic safe one. Best regards, korho. $ lsb_release -rd: Description: Ubuntu 20.04.2 LTS Release: 20.04 $ apt-cache policy xorg xorg: Installed: 1:7.7+19ubuntu14 Candidate: 1:7.7+19ubuntu14 Version table: *** 1:7.7+19ubuntu14 500 500 http://fi.archive.ubuntu.com/ubuntu focal/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22 Uname: Linux 5.11.0-25-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: Fri Aug 6 23:04:27 2021 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company 2nd Generation Core Processor Family Integrated Graphics Controller [103c:2ac5] InstallationDate: Installed on 2021-08-06 (0 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) MachineType: Hewlett-Packard 120-1100eo ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-25-generic root=UUID=bf3dba7e-429f-455e-ac68-c016e272a4d9 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/17/2011 dmi.bios.release: 4.6 dmi.bios.vendor: AMI dmi.bios.version: LEO_707 dmi.board.name: 2AC5 dmi.board.vendor: Quanta dmi.board.version: 100 dmi.chassis.asset.tag: CZC2128RP3 dmi.chassis.type: 3 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnAMI:bvrLEO_707:bd11/17/2011:br4.6:svnHewlett-Packard:pn120-1100eo:pvr:rvnQuanta:rn2AC5:rvr100:cvnHewlett-Packard:ct3:cvr: dmi.product.family: 103C_53316J G=D dmi.product.name: 120-1100eo dmi.product.sku: H1E79EA#UUW dmi.sys.vendor: Hewlett-Packard 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 wayland-session -- 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/1939173 Title: Screen flickering white vertical lines To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1939173/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
