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[Ubuntu Foundations Team Bug Bot <2125825@xxxxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/2125825

Title:
  External display does not wake after laptop lock

Status in xorg package in Ubuntu:
  New

Bug description:
  I have a really annoying issue where my display does not wake after
  locking my laptop and the screen goes blank.

  The laptop screen does come back, and I assume Ubuntu still detects
  the external monitor, since the laptop screen does not switch to
  primary.

  Plugging the external monitor out and back in does not solve the
  issue. Also power cycling the monitor does not fix it. The only thing
  I have found that works is dropping the refresh rate to 60 and then
  increasing it gradually to 240 (I scripted this for now as an easy
  workaround).

  I also tried defaulting to 60hz, but that does not resolve the issue.

  It used to work in 24.04. I have this issue since upgrading to 25.04
  and was hoping it would be fixed with nvidia maturing on wayland. But
  since it is not yet fixed in 25.10, I think it's necessary to post a
  bug report.

  For some reason I can only report issues to Xorg using ubuntu-bug and
  not wayland. I am using wayland as far as I know.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: xorg 1:7.7+24ubuntu1
  ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
  Uname: Linux 6.17.0-5-generic x86_64
  .proc.driver.nvidia.capabilities.fabric-imex-mgmt:
   DeviceFileMinor: 4323
   DeviceFileMode: 256
   DeviceFileModify: 1
  .proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
  .proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file.
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.suspend: suspend hibernate resume
  .proc.driver.nvidia.suspend_depth: default modeset uvm
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX Open Kernel Module for x86_64  580.82.09  Release Build  (dvs-builder@U22-I3-C16-01-3)  Fri Aug 29 17:25:57 UTC 2025
   GCC version:  gcc version 15.2.0 (Ubuntu 15.2.0-4ubuntu4)
  ApportVersion: 2.33.1-0ubuntu2
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: pass
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Sep 27 07:49:45 2025
  DistUpgraded: 2025-09-20 16:35:27,716 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
  DistroCodename: questing
  DistroVariant: ubuntu
  DkmsStatus:
   nvidia/580.82.09, 6.17.0-4-generic, x86_64: installed
   nvidia/580.82.09, 6.17.0-5-generic, x86_64: installed
   vhba/20250329, 6.17.0-4-generic, x86_64: installed
   vhba/20250329, 6.17.0-5-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   NVIDIA Corporation AD103M / GN21-X11 [GeForce RTX 4090 Laptop GPU] [10de:2757] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Device [103c:8bad]
  InstallationDate: Installed on 2023-06-24 (826 days ago)
  InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
  MachineType: HP OMEN by HP Laptop 17-ck2xxx
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.17.0-5-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to questing on 2025-09-20 (7 days ago)
  dmi.bios.date: 01/17/2023
  dmi.bios.release: 15.5
  dmi.bios.vendor: AMI
  dmi.bios.version: F.05
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 8BAD
  dmi.board.vendor: HP
  dmi.board.version: 78.33
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.chassis.version: Chassis Version
  dmi.ec.firmware.release: 78.33
  dmi.modalias: dmi:bvnAMI:bvrF.05:bd01/17/2023:br15.5:efr78.33:svnHP:pnOMENbyHPLaptop17-ck2xxx:pvr:rvnHP:rn8BAD:rvr78.33:cvnHP:ct10:cvrChassisVersion:sku7N699EA#UUG:
  dmi.product.family: 103C_5335M7 HP OMEN
  dmi.product.name: OMEN by HP Laptop 17-ck2xxx
  dmi.product.sku: 7N699EA#UUG
  dmi.sys.vendor: HP
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.125-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 25.2.3-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:21.1.18-1ubuntu1
  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 1:1.0.18-1

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