Public bug reported:
System hang/reboot on kernel 7.0.0-28-generic (AMD Ryzen 7 5700X, RX
7600). journalctl shows repeated amdgpu MODE1 reset events throughout
the day (00:05, 06:47, 08:06) preceding a fatal crash at 15:46 that
triggered kdump. Crash dump shows: WARNING: kernel/workqueue.c:2351 at
__queue_work.part.0+0x190/0x390, CPU#2: swapper/2/0 with multiple CPUs
dumping backtraces simultaneously. The crash coincided with a snap app
(office365webdesktop) attempting GPU-accelerated Vulkan/DRI
initialization. Kernel 7.0.0-22 has been stable as a workaround. dmesg
attached: /var/crash/202608011547/dmesg.202608011547
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-28-generic 7.0.0-28.28
ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12
Uname: Linux 7.0.0-28-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Aug 2 14:58:17 2026
InstallationDate: Installed on 2026-04-23 (101 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
IwDevWlp6s0Link: Not connected.
MachineType: Gigabyte Technology Co., Ltd. B550M AORUS ELITE
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-28-generic
root=UUID=67cd9e19-bcef-4463-95ea-5dbdd9b6019e ro quiet splash
processor.max_cstate=1
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/14/2026
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: FHb
dmi.board.asset.tag: Default string
dmi.board.name: B550M AORUS ELITE
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
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.:bvrFHb:bd04/14/2026:br5.17:svnGigabyteTechnologyCo.,Ltd.:pnB550MAORUSELITE:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB550MAORUSELITE:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring:pfaB550MB:
dmi.product.family: B550 MB
dmi.product.name: B550M AORUS ELITE
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2162673
Title:
System hang/reboot on kernel 7.0.0-28-generic with repeated amdgpu
MODE1 resets (Ryzen 7 5700X + RX 7600)
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