apport information
** Tags added: apport-collected resolute wayland-session
** Description changed:
An ASUS ProArt PX13 HN7306EAC with an AMD integrated GPU (PCI ID
1002:1586) repeatedly experienced kernel-side TTM/AMDGPU corruption and
complete graphical failure while running Ubuntu 26.04 kernel
7.0.0-29-generic.
The failures occurred with different visible userspace processes. They
are therefore reported as possible triggers, not assumed root causes.
FIRST HARD FREEZE / NULL DEREFERENCE
A complete desktop freeze required a hard reset. The first fatal event
was:
BUG: kernel NULL pointer dereference, address: 0000000000000019
Comm: ptyxis
RIP: ttm_lru_bulk_move_pos_tail+0x53/0xd0 [ttm]
Relevant call path:
ttm_resource_add_bulk_move
ttm_bo_populate
ttm_bo_vm_fault_reserved
amdgpu_gem_fault
A previous occurrence involved firefox:gl0 and failed in the same
TTM/AMDGPU resource-management area.
LATER TTM LIST CORRUPTION
Immediately before the warnings, the kernel repeatedly logged:
amdgpu_vm_validate() failed.
Not enough memory for command submission!
This was followed by:
list_add corruption
list_del corruption
Relevant call paths included:
ttm_resource_move_to_lru_tail
ttm_bo_populate
ttm_bo_vm_fault_reserved
amdgpu_gem_fault
and:
ttm_resource_fini
ttm_resource_free
amdgpu_bo_move
amdgpu_cs_bo_validate
amdgpu_cs_ioctl
LATER GRAPHICAL-SESSION FAILURE
AMDGPU again rejected command submissions with -12. GNOME Shell then
aborted with SIGABRT in Mesa Gallium, closing the Wayland session and
all terminal applications. This event was a graphical-session restart,
not a full machine reboot.
ENVIRONMENT
Hardware: ASUS ProArt PX13 HN7306EAC
CPU/GPU: AMD Ryzen AI Max+ 395 / Radeon 8060S
GPU PCI ID: 1002:1586
BIOS: HN7306EAC.307 (2026-01-27)
RAM: 128 GB shared system/GPU memory
Distribution: Ubuntu 26.04
Kernel: 7.0.0-29-generic, package 7.0.0-29.29 (upstream base 7.0.12)
Desktop: GNOME on Wayland
WORKLOAD / POSSIBLE TRIGGER
Local llama.cpp/Vulkan language-model workloads and desktop applications
were active. They use shared system/GPU memory and may increase memory
pressure. This is reported as a possible trigger only, not as a
demonstrated root cause.
NEGATIVE EVIDENCE
The inspected logs before the first Oops did not show an OOM kill, MCE,
thermal shutdown, PCIe AER error, GPU ring timeout, or GPU reset. The
kernel was not tainted before the first Oops.
EXPECTED RESULT
Userspace GPU activity or memory pressure must not corrupt TTM lists,
trigger a kernel NULL pointer dereference, or terminate the graphical
session.
PRIVACY
No vmcore, dump-incomplete, or full memory image is attached because
those artifacts may contain credentials, documents, medical data, and
browser contents.
RELATED REPORT
A public report with a similar ttm_lru_bulk_move_pos_tail signature and hard
desktop freeze is available at:
https://github.com/basecamp/omarchy/issues/6443
+
+ ---
+ ProblemType: Bug
+ ApportVersion: 2.34.1-0ubuntu0.1
+ Architecture: amd64
+ CasperMD5CheckResult: pass
+ CurrentDesktop: ubuntu:GNOME
+ DistroRelease: Ubuntu 26.04
+ InstallationDate: Installed on 2026-08-01 (15 days ago)
+ InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64
(20260423.1)
+ MachineType: ASUS ProArt PX13 HN7306EAC
+ Package: linux (not installed)
+ ProcEnviron:
+ LANG=es_ES.UTF-8
+ PATH=(custom, no user)
+ SHELL=/bin/bash
+ TERM=xterm-256color
+ XDG_RUNTIME_DIR=<set>
+ ProcFB: 0 amdgpudrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-29-generic
root=UUID=80141fa6-a50a-4bc8-816b-cc4d43d1fa74 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
+ ProcVersionSignature: Ubuntu 7.0.0-29.29-generic 7.0.12
+ Tags: resolute wayland-session
+ Uname: Linux 7.0.0-29-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip lpadmin lxd plugdev sudo users
+ _MarkForUpload: True
+ dmi.bios.date: 01/27/2026
+ dmi.bios.release: 5.36
+ dmi.bios.vendor: American Megatrends International, LLC.
+ dmi.bios.version: HN7306EAC.307
+ dmi.board.asset.tag: ATN12345678901234567
+ dmi.board.name: HN7306EAC
+ dmi.board.vendor: ASUSTeK COMPUTER INC.
+ dmi.board.version: 1.0
+ dmi.chassis.asset.tag: No Asset Tag
+ dmi.chassis.type: 31
+ dmi.chassis.vendor: ASUSTeK COMPUTER INC.
+ dmi.chassis.version: 1.0
+ dmi.ec.firmware.release: 3.6
+ dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrHN7306EAC.307:bd01/27/2026:br5.36:efr3.6:svnASUS:pnProArtPX13HN7306EAC:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnHN7306EAC:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct31:cvr1.0:sku:pfaProArtPX13:
+ dmi.product.family: ProArt PX13
+ dmi.product.name: ProArt PX13 HN7306EAC
+ dmi.product.version: 1.0
+ dmi.sys.vendor: ASUS
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/2163363/+attachment/5992594/+files/AlsaInfo.txt
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https://bugs.launchpad.net/bugs/2163363
Title:
[amdgpu/ttm] TTM list corruption and NULL dereference under GPU memory
pressure on ASUS ProArt PX13 (7.0.0-29)
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