Public bug reported:
After a fresh installation of Xubuntu 26.04 on ThinkPad X1 Carbon Gen 14,
flickers are observed when the mouse pointer moves. The flickers are random,
and they seem to occur more often when the pointer moves over the edges of
windows.
The flickers become even more observable in google-chrome, where they occur
(randomly) when the pointer moves over links.
Thank you for taking a look.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: xorg 1:7.7+26ubuntu1
ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0
Uname: Linux 7.0.0-22-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CompositorRunning: None
CurrentDesktop: XFCE
Date: Sun Jun 14 23:58:09 2026
DistUpgraded: Fresh install
DistroCodename: resolute
DistroVariant: ubuntu
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
Intel Corporation Panther Lake [Arc B390] [8086:b080] (rev 04) (prog-if 00
[VGA controller])
Subsystem: Lenovo Device [17aa:2352]
InstallationDate: Installed on 2026-06-11 (3 days ago)
InstallationMedia: Xubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: LENOVO 21V7001BCD
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-22-generic
root=UUID=3cbf6b20-1752-432d-ac98-bf9b5a45453b ro xe.enable_panel_replay=0
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/14/2026
dmi.bios.release: 1.12
dmi.bios.vendor: LENOVO
dmi.bios.version: N4OET49W (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21V7001BCD
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76576 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.9
dmi.modalias:
dmi:bvnLENOVO:bvrN4OET49W(1.12):bd05/14/2026:br1.12:efr1.9:svnLENOVO:pn21V7001BCD:pvrThinkPadX1CarbonGen14:rvnLENOVO:rn21V7001BCD:rvrSDK0T76576WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21V7_BU_Think_FM_ThinkPadX1CarbonGen14:pfaThinkPadX1CarbonGen14:
dmi.product.family: ThinkPad X1 Carbon Gen 14
dmi.product.name: 21V7001BCD
dmi.product.sku: LENOVO_MT_21V7_BU_Think_FM_ThinkPad X1 Carbon Gen 14
dmi.product.version: ThinkPad X1 Carbon Gen 14
dmi.sys.vendor: LENOVO
modified.conffile..etc.default.apport: [modified]
mtime.conffile..etc.default.apport: 2026-06-11T23:53:25.761576
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.131-1
version.libgl1-mesa-dri: libgl1-mesa-dri 26.0.3-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.22-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build2
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20210115-1build2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.18-1build1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug corruption resolute ubuntu
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https://bugs.launchpad.net/bugs/2156709
Title:
Xubuntu 26.04 flickers on ThinkPad X1 Carbon Gen 14
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