Public bug reported:
Often, when there are small changes in image displayed, an horizontal
flickering is observed. This happen for example on a mouse right button menu,
or when a hyperlink description appears on the screen bottom when mouse pointer
cross some field on a webpage, also when favorites menu appear.
The flickering usually disappear in a few moments, sometimes (usually when a
few pixels are updating) it can last for seconds.
This flickering is caused by a late updating of some horizontal lines, so for
awhile a few lines of previous image coexist with a majority of new ones
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.13.0-41.46~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.23
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 14 22:44:12 2023
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 6.1.32, 5.13.0-40-generic, x86_64: installed
virtualbox, 6.1.32, 5.13.0-41-generic, x86_64: installed
virtualbox, 6.1.32, 5.4.0-126-generic, x86_64: installed
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
Intel Corporation Device [8086:9a49] (rev 01) (prog-if 00 [VGA controller])
Subsystem: Device [1e39:a025]
InstallationDate: Installed on 2022-01-01 (529 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
Lsusb: Error: command ['lsusb'] failed with exit code 127: lsusb: symbol lookup
error: lsusb: undefined symbol: libusb_error_name
Lsusb-t: Error: command ['lsusb', '-t'] failed with exit code 127: lsusb:
symbol lookup error: lsusb: undefined symbol: libusb_error_name
Lsusb-v: Error: command ['lsusb', '-v'] failed with exit code 127: lsusb:
symbol lookup error: lsusb: undefined symbol: libusb_error_name
MachineType: MEDION S15449
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-41-generic
root=UUID=cbfc0023-baf3-4a11-b0aa-6dadbd0f60f7 ro quiet splash pci=noaer
vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/09/2021
dmi.bios.release: 5.19
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 212
dmi.board.asset.tag: Default string
dmi.board.name: M15T
dmi.board.vendor: MEDION
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 10
dmi.chassis.vendor: MEDION
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvr212:bd04/09/2021:br5.19:svnMEDION:pnS15449:pvrDefaultstring:rvnMEDION:rnM15T:rvrDefaultstring:cvnMEDION:ct10:cvrDefaultstring:skuML-23000830031014:
dmi.product.family: Akoya
dmi.product.name: S15449
dmi.product.sku: ML-230008 30031014
dmi.product.version: Default string
dmi.sys.vendor: MEDION
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 2:1.20.13-1ubuntu1~20.04.2
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 N/A
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
** Attachment added: "video explaining the bug when favorites menu
appear/disappear"
https://bugs.launchpad.net/bugs/2023927/+attachment/5679762/+files/WhatsApp%20Video%202023-06-14%20at%2022.59.56.mp4
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https://bugs.launchpad.net/bugs/2023927
Title:
Screen flickering whe update images
Status in xorg package in Ubuntu:
New
Bug description:
Often, when there are small changes in image displayed, an horizontal
flickering is observed. This happen for example on a mouse right button menu,
or when a hyperlink description appears on the screen bottom when mouse pointer
cross some field on a webpage, also when favorites menu appear.
The flickering usually disappear in a few moments, sometimes (usually when a
few pixels are updating) it can last for seconds.
This flickering is caused by a late updating of some horizontal lines, so for
awhile a few lines of previous image coexist with a majority of new ones
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.13.0-41.46~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.23
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 14 22:44:12 2023
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 6.1.32, 5.13.0-40-generic, x86_64: installed
virtualbox, 6.1.32, 5.13.0-41-generic, x86_64: installed
virtualbox, 6.1.32, 5.4.0-126-generic, x86_64: installed
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
Intel Corporation Device [8086:9a49] (rev 01) (prog-if 00 [VGA controller])
Subsystem: Device [1e39:a025]
InstallationDate: Installed on 2022-01-01 (529 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
Lsusb: Error: command ['lsusb'] failed with exit code 127: lsusb: symbol
lookup error: lsusb: undefined symbol: libusb_error_name
Lsusb-t: Error: command ['lsusb', '-t'] failed with exit code 127: lsusb:
symbol lookup error: lsusb: undefined symbol: libusb_error_name
Lsusb-v: Error: command ['lsusb', '-v'] failed with exit code 127: lsusb:
symbol lookup error: lsusb: undefined symbol: libusb_error_name
MachineType: MEDION S15449
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-41-generic
root=UUID=cbfc0023-baf3-4a11-b0aa-6dadbd0f60f7 ro quiet splash pci=noaer
vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/09/2021
dmi.bios.release: 5.19
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 212
dmi.board.asset.tag: Default string
dmi.board.name: M15T
dmi.board.vendor: MEDION
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 10
dmi.chassis.vendor: MEDION
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvr212:bd04/09/2021:br5.19:svnMEDION:pnS15449:pvrDefaultstring:rvnMEDION:rnM15T:rvrDefaultstring:cvnMEDION:ct10:cvrDefaultstring:skuML-23000830031014:
dmi.product.family: Akoya
dmi.product.name: S15449
dmi.product.sku: ML-230008 30031014
dmi.product.version: Default string
dmi.sys.vendor: MEDION
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 2:1.20.13-1ubuntu1~20.04.2
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 N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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