Public bug reported:
System intermittently freezes due to AMD GPU DMUB/DC errors on an ASUS
A16 laptop running Xubuntu 26.04.
Hardware:
ASUS TUF Gaming A16 Advantage Edition laptop
CPU: AMD Ryzen 7 7735HS (16) @ 4.83 GHz
GPU 1: AMD Radeon RX 7700S [Discrete]
GPU 2: AMD Radeon 680M [Integrated]
Software:
Xubuntu 26.04
Kernel: 7.0.0-15-generic
Mesa: 26.0.3-1ubuntu1
Observed behavior:
The system occasionally hard-freezes during desktop/compositor redraw activity.
The mouse and display stop responding and the session becomes unusable.
One deterministic reproducer was found which worked in at least 3
separate sessions, although it is not always reproducible in exactly the
same way and is not always reliable:
Open "LightDM GTK Greeter Settings"
Press "Reload Settings"
Close the window
Press the Super key to open the XFCE Whisker menu
System freezes
Relevant kernel logs collected during the freeze:
amdgpu 0000:78:00.0: [drm [amdgpu]] [PLANE:202] PSR FFU dirty rect size (1920,
1200)
amdgpu 0000:78:00.0: [drm [amdgpu]] No reply for DMUB command: status=3
amdgpu 0000:78:00.0: [drm] ERROR dc_dmub_srv_log_diagnostic_data: DMCUB error -
collecting diagnostic data
This appears related to AMD Display Core / DMUB behavior, possibly
involving PSR (Panel Self Refresh) and/or compositor redraws.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-15-generic 7.0.0-15.15
ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0
Uname: Linux 7.0.0-15-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: javier 3789 F.... wireplumber
/dev/snd/controlC1: javier 3789 F.... wireplumber
/dev/snd/controlC0: javier 3789 F.... wireplumber
/dev/snd/seq: javier 3778 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Sun May 10 14:59:05 2026
InstallationDate: Installed on 2026-05-08 (2 days ago)
InstallationMedia: Xubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: ASUSTeK COMPUTER INC. ASUS TUF Gaming A16 FA617NT_FA617NT
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-7.0.0-15-generic
root=UUID=5fc9515c-5f12-48fa-973f-0f5f53de1813 ro quiet splash
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/22/2025
dmi.bios.release: 5.24
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: FA617NT.422
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: FA617NT
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.ec.firmware.release: 0.255
dmi.modalias:
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrFA617NT.422:bd01/22/2025:br5.24:efr0.255:svnASUSTeKCOMPUTERINC.:pnASUSTUFGamingA16FA617NT_FA617NT:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnFA617NT:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku:pfaASUSTUFGamingA16:
dmi.product.family: ASUS TUF Gaming A16
dmi.product.name: ASUS TUF Gaming A16 FA617NT_FA617NT
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2152139
Title:
[amdgpu] DMUB/DMCUB freeze on ASUS TUF A16 during XFCE redraw activity
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