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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

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug questing ubuntu wayland-session
-- 
External display does not wake after laptop lock
https://bugs.launchpad.net/bugs/2125825
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