Public bug reported:
Since upgrading from linux-image 7.0.0-34-generic to 7.0.0-38-generic, I
get brief flashes of garbage horizontal bands on screen. Booting back
into 7.0.0-34 makes the problem go away.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-generic (not installed)
ProcVersionSignature: Ubuntu 7.0.0-38.38~24.04.4-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: django 8034 F.... wireplumber
/dev/snd/controlC0: django 8034 F.... wireplumber
/dev/snd/seq: django 8028 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 7 16:04:05 2026
InstallationDate: Installed on 2025-12-02 (309 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64
(20240827.1)
MachineType: GMKtec NucBox K8 Plus
ProcEnviron:
LANG=fr_FR.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic
root=UUID=7b0e46f1-6664-4d77-9e2f-3d3c6f852582 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-7.0.0-38-generic N/A
linux-backports-modules-7.0.0-38-generic N/A
linux-firmware 20240318.git3b128b60.0ubuntu3.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/19/2025
dmi.bios.release: 5.29
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: NucBox K8 Plus 1.01
dmi.board.asset.tag: Default string
dmi.board.name: NucBox K8 Plus
dmi.board.vendor: GMKtec
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrNucBoxK8Plus1.01:bd02/19/2025:br5.29:svnGMKtec:pnNucBoxK8Plus:pvrDefaultstring:rvnGMKtec:rnNucBoxK8Plus:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuK8Plus-001:pfaMINI:
dmi.product.family: MINI
dmi.product.name: NucBox K8 Plus
dmi.product.sku: K8 Plus-001
dmi.product.version: Default string
dmi.sys.vendor: GMKtec
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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https://bugs.launchpad.net/bugs/2169855
Title:
amdgpu: intermittent display corruption (garbage bands)
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