Public bug reported:
I am experiencing intermittent complete system freezes on Ubuntu 26.04
with an AMD Radeon RX 9070 XT.
System:
* Ubuntu 26.04
* Affected kernel: 7.0.0-34-generic
* Also tested: 7.0.0-31 and 7.0.0-38
* GPU: AMD Radeon RX 9070 XT
* CPU: AMD Ryzen 7 9850X3D
* Display: 3840x2160 @ 144 Hz via DisplayPort
* GPU driver: in-kernel amdgpu / Mesa RADV
Before the freeze, the kernel repeatedly reports:
workqueue: dm_handle_vmin_vmax_update [amdgpu] hogged CPU for >10000us
The warning count progressively increased over time.
On the affected 7.0.0-34 boot, this was followed by:
Oops: general protection fault, probably for non-canonical address
The crash occurred in:
dml21_prepare_mcache_programming+0x301/0x11e0 [amdgpu]
Relevant call trace:
dml21_prepare_mcache_programming
opp2_set_disp_pattern_generator
dml2_prepare_mcache_programming
dcn401_prepare_mcache_programming
disable_dangling_plane
dc_commit_state_no_check
dc_commit_streams
amdgpu_dm_commit_streams
amdgpu_dm_atomic_commit_tail
commit_tail
commit_work
process_one_work
worker_thread
kthread
The workqueue was:
events_unbound commit_work
As an example, on kernel 7.0.0-38 the warning count increased as
follows:
16:08:49 - 4 times
16:08:53 - 5 times
16:08:56 - 7 times
16:10:08 - 11 times
16:12:39 - 19 times
16:16:53 - 35 times
No GPU ring timeout, VM fault, or MCE/EDAC hardware errors were observed
around the crash.
I am currently testing mainline kernel 7.1.5. The same
dm_handle_vmin_vmax_update warning is still present, but so far I have
not experienced the Oops or a complete freeze on 7.1.5.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep 28 09:22:59 2026
InstallationDate: Installed on 2026-08-28 (31 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
MachineType: Micro-Star International Co., Ltd. MS-7E62
ProcEnviron:
LANG=en_US.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=681c8f82-e4ee-4962-a23b-25410db44135 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RfKill:
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-08-28 (31 days ago)
dmi.bios.date: 06/29/2026
dmi.bios.release: 5.41
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 2.A62
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: MAG B850 TOMAHAWK MAX WIFI (MS-7E62)
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: 2.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: 2.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvr2.A62:bd06/29/2026:br5.41:svnMicro-StarInternationalCo.,Ltd.:pnMS-7E62:pvr2.0:rvnMicro-StarInternationalCo.,Ltd.:rnMAGB850TOMAHAWKMAXWIFI(MS-7E62):rvr2.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr2.0:skuTobefilledbyO.E.M.:pfaTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7E62
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 2.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug package-from-proposed resolute wayland-session
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https://bugs.launchpad.net/bugs/2168721
Title:
AMDGPU bug report: Oops and system freeze with RX 9070 XT
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