Public bug reported:
1) The release of Ubuntu you are using:
Ubuntu 26.04
2) The version of the package you are using:
linux-image-7.0.0-28-generic (Update from 7.0.0-27-generic)
3) What you expected to happen:
Normal desktop performance and stable video encoding/decoding, identical to the
performance experienced on the previous kernel (7.0.0-27-generic).
4) What happened instead:
Updating to kernel 7.0.0-28-generic introduces a severe hardware regression.
Upon booting, there is immediate system-wide GUI freezing and severe input lag.
Monitoring via `nvtop` shows the GPU pegged at 100% usage, specifically locked
up on the video encoder (UVD/VCE).
Rolling back to kernel 7.0.0-27-generic completely resolves the issue,
confirming this is a regression introduced in the 7.0.0-28 update.
Hardware & Environment Details:
* GPU: Gigabyte AMD Radeon R7 260X / Bonaire XTX [1002:6658] (GCN 2.0 / CIK
architecture)
* Driver in use: amdgpu
* Display Server: Wayland
Additional Context:
Forcing the older `radeon` driver via GRUB (`radeon.cik_support=1`) results in
extreme graphical artifacting ("jumping squares"), meaning `amdgpu` is the only
viable driver for this card. The `amdgpu` driver works flawlessly on 7.0.0-27.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-27-generic 7.0.0-27.27
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: menachem 4045 F.... wireplumber
/dev/snd/controlC1: menachem 4045 F.... wireplumber
/dev/snd/seq: menachem 4024 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Jul 28 01:46:07 2026
InstallationDate: Installed on 2026-05-04 (84 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: MSI MS-7816
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-27-generic
root=UUID=49e97215-064b-4733-be9a-27e7f6b08c21 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/09/2015
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.11
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z87-G43 (MS-7816)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrV1.11:bd05/09/2015:br4.6:svnMSI:pnMS-7816:pvr1.0:rvnMSI:rnZ87-G43(MS-7816):rvr1.0:cvnMSI:ct3:cvr1.0:skuTobefilledbyO.E.M.:pfaTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7816
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: MSI
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug kernel-daily-bug resolute wayland-session
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2161932
Title:
[Regression] Severe GUI lag and 100% UVD/VCE usage on AMD R7 260X
(Bonaire) with kernel 7.0.0-28
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