debcrafters-packages team mailing list archive

[Daniel van Vugt <2117036@xxxxxxxxxxxxxxxxxx>]

Thanks for the bug report. I've seen a couple of bugs like this in the
past. The one most relevant I think is specific to high refresh rate
displays (usually OLED) with amdgpu. I think the issue was fixed in the
newer kernel 6.14 in Ubuntu 25.04. Prior to that, a workaround was to
add this kernel parameter:

  amdgpu.dcdebugmask=0x10

to turn off panel self-refresh (PSR).




** Package changed: xorg (Ubuntu) => ubuntu

** Changed in: ubuntu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/2117036

Title:
  [Asus Zenbook UN5401A] Random display pipe slowdown. Not performance
  related. Screen content updates @ what feels like ~1Hz

Status in Ubuntu:
  Incomplete

Bug description:
  Hi,

  This issue has been going on since I first installed Ubuntu. At
  random, the display immediately quits updating at a reasonable rate
  and has extreme lag. Best way I can explain the visual is as if the
  device is memory bottlenecked and the desktop windows are severely
  lagged. Only way to overcome the bug is to reboot from my current
  findings.

  -----edit-----
  I should add, 'at random' typically involved me using vscode or firefox, but no particular action or activity I've noticed causes this. This latest event was while watching a video, but has not been limited to video playback occurring.
  ---end edit---

  Contrary to the visual, this is not a performance related bug. At
  every recent instance of this event I verified memory(& swap), CPU,
  and GPU usage and their respective performance by benchmarks. There is
  no impact to the performance during the bug compared to normal usage.
  There are no abnormal levels of memory/cpu/gpu usage.

  This problem has occurred both after a fresh reboot, and after
  suspend, so it is not sleep state bound.

  During the bug I have switched to tty3, and the lag was still present,
  which suggests this likely isn't a gnome/wayland/xorg bug but rather a
  kernel/driver bug. The instability may have been created as a result
  of being in the graphical environment, however, so it is not
  certainty.

  Given Zenbooks have issues with poor performance after suspend (which
  I found to be possibly attributed to the charger being plugged-in when
  invoking suspend), I have yet to confirm if the bug occurs both on &
  off the charger, but my recollection tells me it does. I mention this
  out of possible relation.

  I'll attach an image of graphical artifacting I've caught, which may
  be related but I'm uncertain. The artifacting occurs generally while
  switching program windows or scrolling on Firefox.

  I'll also attach excerpts of journalctl, two of which are prior events
  from this week (not full logs, but are around the timestamp of the bug
  starting; possibly grepped, I can't recall), and the rest are from
  today (a full dump, at event, and specific grep):

  prior events files:
  journal_1_aroundevent.txt
  journal_2_aroundevent.txt

  latest event files [event occurred ~02:07]:
  journal_3_atevent.txt
  [fetched with journalctl @ ~02:08 and copied from 02:07:00 onward]

  journal_3_grep.txt
  [fetched @ ~02:20 with journalctl -b | grep "Jul 16" | grep -E 'desktop|display|amd|amdgpu|gpu|graphic|graphics']

  journal_3_fulldump.txt
  [fetched with journalctl -b -1 > ...]

  Hopefully what I've provided is of some assistance, but I'm fully open
  to getting more information/logs or attempting fixes so long as they
  are safe. I recognize Ubuntu recommends to provide a dmesg dump during
  bugs like this, so that will be attached as soon as this bug happens
  again.

  If this is a kernel bug and there is a better place to report this to,
  please let me know.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: xorg 1:7.7+23ubuntu3
  ProcVersionSignature: Ubuntu 6.8.0-63.66-generic 6.8.12
  Uname: Linux 6.8.0-63-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.7
  Architecture: amd64
  CasperMD5CheckResult: pass
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Jul 16 03:24:54 2025
  DistUpgraded: Fresh install
  DistroCodename: noble
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GpuHangFrequency: Several times a week
  GpuHangReproducibility: Seems to happen randomly
  GpuHangStarted: Immediately after installing this version of Ubuntu
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt [Radeon 680M] [1002:1681] (rev 02) (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Rembrandt [Radeon 680M] [1043:12b3]
  InstallationDate: Installed on 2024-05-08 (434 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  MachineType: ASUSTeK COMPUTER INC. Zenbook UN5401RA UN5401RA_UN5401RA
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-63-generic root=UUID=9b249c4d-0484-4e96-8302-77dd921b1455 ro quiet splash amdgpu.abmlevel=0 usbcore.autosuspend=-1 fsck.mode=force fsck.repair=yes vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/24/2022
  dmi.bios.release: 5.24
  dmi.bios.vendor: American Megatrends International, LLC.
  dmi.bios.version: UN5401RA.306
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UN5401RA
  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.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrUN5401RA.306:bd11/24/2022:br5.24:svnASUSTeKCOMPUTERINC.:pnZenbookUN5401RAUN5401RA_UN5401RA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUN5401RA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct31:cvr1.0:sku:
  dmi.product.family: Zenbook Flip
  dmi.product.name: Zenbook UN5401RA UN5401RA_UN5401RA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.122-1~ubuntu0.24.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 24.2.8-1ubuntu1~24.04.1
  version.libgl1-mesa-glx: libgl1-mesa-glx 21.2.6-0ubuntu0.1~20.04.2
  version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1.4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1build1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

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