Public bug reported:

After an update my external display switched off and is not being detected.
I connected my external display to windows laptop to test and it worked.
Some additional information:

lsb_release -rd
No LSB modules are available.
Description:    Ubuntu 23.04
Release:        23.04

xrandr --listmonitors
Monitors: 1
 0: +*XWAYLAND0 1920/340x1080/190+0+0  XWAYLAND0

dpkg -l | grep -i nvidia
ii  libnvidia-cfg1-535:amd64                       535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA binary OpenGL/GLX configuration library
ii  libnvidia-common-535                           535.54.03-0ubuntu0.23.04.2   
           all          Shared files used by the NVIDIA libraries
rc  libnvidia-compute-525:amd64                    525.116.04-0ubuntu0.23.04.1  
           amd64        NVIDIA libcompute package
ii  libnvidia-compute-535:amd64                    535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA libcompute package
ii  libnvidia-decode-535:amd64                     535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA Video Decoding runtime libraries
ii  libnvidia-encode-535:amd64                     535.54.03-0ubuntu0.23.04.2   
           amd64        NVENC Video Encoding runtime library
ii  libnvidia-extra-535:amd64                      535.54.03-0ubuntu0.23.04.2   
           amd64        Extra libraries for the NVIDIA driver
ii  libnvidia-fbc1-535:amd64                       535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA OpenGL-based Framebuffer Capture runtime library
ii  libnvidia-gl-535:amd64                         535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan 
ICD
rc  linux-modules-nvidia-525-6.2.0-20-generic      6.2.0-20.20+2                
           amd64        Linux kernel nvidia modules for version 6.2.0-20
rc  linux-modules-nvidia-525-6.2.0-23-generic      6.2.0-23.23                  
           amd64        Linux kernel nvidia modules for version 6.2.0-23
rc  linux-modules-nvidia-525-6.2.0-24-generic      6.2.0-24.24                  
           amd64        Linux kernel nvidia modules for version 6.2.0-24
ii  linux-objects-nvidia-525-6.2.0-1005-oracle     6.2.0-1005.5+3               
           amd64        Linux kernel nvidia modules for version 6.2.0-1005 
(objects)
ii  linux-objects-nvidia-525-6.2.0-1007-lowlatency 6.2.0-1007.7+3               
           amd64        Linux kernel nvidia modules for version 6.2.0-1007 
(objects)
rc  linux-objects-nvidia-525-6.2.0-20-generic      6.2.0-20.20+2                
           amd64        Linux kernel nvidia modules for version 6.2.0-20 
(objects)
rc  linux-objects-nvidia-525-6.2.0-23-generic      6.2.0-23.23                  
           amd64        Linux kernel nvidia modules for version 6.2.0-23 
(objects)
rc  linux-objects-nvidia-525-6.2.0-24-generic      6.2.0-24.24                  
           amd64        Linux kernel nvidia modules for version 6.2.0-24 
(objects)
ii  linux-signatures-nvidia-6.2.0-1005-oracle      6.2.0-1005.5+3               
           amd64        Linux kernel signatures for nvidia modules for version 
6.2.0-1005-oracle
ii  linux-signatures-nvidia-6.2.0-1007-lowlatency  6.2.0-1007.7+3               
           amd64        Linux kernel signatures for nvidia modules for version 
6.2.0-1007-lowlatency
rc  nvidia-compute-utils-525                       525.116.04-0ubuntu0.23.04.1  
           amd64        NVIDIA compute utilities
ii  nvidia-compute-utils-535                       535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA compute utilities
ii  nvidia-dkms-535                                535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA DKMS package
ii  nvidia-driver-535                              535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA driver metapackage
ii  nvidia-firmware-535-535.54.03                  535.54.03-0ubuntu0.23.04.2   
           amd64        Firmware files used by the kernel module
rc  nvidia-kernel-common-525                       525.116.04-0ubuntu0.23.04.1  
           amd64        Shared files used with the kernel module
ii  nvidia-kernel-common-535                       535.54.03-0ubuntu0.23.04.2   
           amd64        Shared files used with the kernel module
ii  nvidia-kernel-source-535                       535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA kernel source package
ii  nvidia-prime                                   0.8.17.1                     
           all          Tools to enable NVIDIA's Prime
ii  nvidia-settings                                510.47.03-0ubuntu1           
           amd64        Tool for configuring the NVIDIA graphics driver
ii  nvidia-utils-535                               535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA driver support binaries
ii  screen-resolution-extra                        0.18.3                       
           all          Extension for the nvidia-settings control panel
ii  xserver-xorg-video-nvidia-535                  535.54.03-0ubuntu0.23.04.2   
           amd64        NVIDIA binary Xorg driver

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.2.0-1007.7-lowlatency 6.2.12
Uname: Linux 6.2.0-1007-lowlatency x86_64
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Jul  2 11:33:36 2023
DistUpgraded: Fresh install
DistroCodename: lunar
DistroVariant: ubuntu
DkmsStatus: nvidia/535.54.03: added
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation TigerLake-H GT1 [UHD Graphics] [8086:9a68] (rev 01) (prog-if 
00 [VGA controller])
   Subsystem: Dell TigerLake-H GT1 [UHD Graphics] [1028:0a71]
 NVIDIA Corporation GA107M [GeForce RTX 3050 Mobile] [10de:25a2] (rev a1) 
(prog-if 00 [VGA controller])
   Subsystem: Dell GA107M [GeForce RTX 3050 Mobile] [1028:0a71]
InstallationDate: Installed on 2023-05-18 (44 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
MachineType: Dell Inc. Dell G15 5511
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.2.0-1007-lowlatency 
root=UUID=9a41f8cd-8ba0-47c9-aff0-9ed6ddef55c7 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/09/2023
dmi.bios.release: 1.22
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.22.1
dmi.board.name: 0746J2
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.22.1:bd05/09/2023:br1.22:svnDellInc.:pnDellG155511:pvr:rvnDellInc.:rn0746J2:rvrA05:cvnDellInc.:ct10:cvr:sku0A71:
dmi.product.family: GSeries
dmi.product.name: Dell G15 5511
dmi.product.sku: 0A71
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.114-1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-1ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

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


** Tags: amd64 apport-bug lunar ubuntu wayland-session

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https://bugs.launchpad.net/bugs/2025550

Title:
  External display is not detecting

Status in xorg package in Ubuntu:
  New

Bug description:
  After an update my external display switched off and is not being detected.
  I connected my external display to windows laptop to test and it worked.
  Some additional information:

  lsb_release -rd
  No LSB modules are available.
  Description:  Ubuntu 23.04
  Release:      23.04

  xrandr --listmonitors
  Monitors: 1
   0: +*XWAYLAND0 1920/340x1080/190+0+0  XWAYLAND0

  dpkg -l | grep -i nvidia
  ii  libnvidia-cfg1-535:amd64                       535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA binary OpenGL/GLX configuration library
  ii  libnvidia-common-535                           535.54.03-0ubuntu0.23.04.2 
             all          Shared files used by the NVIDIA libraries
  rc  libnvidia-compute-525:amd64                    
525.116.04-0ubuntu0.23.04.1             amd64        NVIDIA libcompute package
  ii  libnvidia-compute-535:amd64                    535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA libcompute package
  ii  libnvidia-decode-535:amd64                     535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA Video Decoding runtime libraries
  ii  libnvidia-encode-535:amd64                     535.54.03-0ubuntu0.23.04.2 
             amd64        NVENC Video Encoding runtime library
  ii  libnvidia-extra-535:amd64                      535.54.03-0ubuntu0.23.04.2 
             amd64        Extra libraries for the NVIDIA driver
  ii  libnvidia-fbc1-535:amd64                       535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA OpenGL-based Framebuffer Capture runtime 
library
  ii  libnvidia-gl-535:amd64                         535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan 
ICD
  rc  linux-modules-nvidia-525-6.2.0-20-generic      6.2.0-20.20+2              
             amd64        Linux kernel nvidia modules for version 6.2.0-20
  rc  linux-modules-nvidia-525-6.2.0-23-generic      6.2.0-23.23                
             amd64        Linux kernel nvidia modules for version 6.2.0-23
  rc  linux-modules-nvidia-525-6.2.0-24-generic      6.2.0-24.24                
             amd64        Linux kernel nvidia modules for version 6.2.0-24
  ii  linux-objects-nvidia-525-6.2.0-1005-oracle     6.2.0-1005.5+3             
             amd64        Linux kernel nvidia modules for version 6.2.0-1005 
(objects)
  ii  linux-objects-nvidia-525-6.2.0-1007-lowlatency 6.2.0-1007.7+3             
             amd64        Linux kernel nvidia modules for version 6.2.0-1007 
(objects)
  rc  linux-objects-nvidia-525-6.2.0-20-generic      6.2.0-20.20+2              
             amd64        Linux kernel nvidia modules for version 6.2.0-20 
(objects)
  rc  linux-objects-nvidia-525-6.2.0-23-generic      6.2.0-23.23                
             amd64        Linux kernel nvidia modules for version 6.2.0-23 
(objects)
  rc  linux-objects-nvidia-525-6.2.0-24-generic      6.2.0-24.24                
             amd64        Linux kernel nvidia modules for version 6.2.0-24 
(objects)
  ii  linux-signatures-nvidia-6.2.0-1005-oracle      6.2.0-1005.5+3             
             amd64        Linux kernel signatures for nvidia modules for 
version 6.2.0-1005-oracle
  ii  linux-signatures-nvidia-6.2.0-1007-lowlatency  6.2.0-1007.7+3             
             amd64        Linux kernel signatures for nvidia modules for 
version 6.2.0-1007-lowlatency
  rc  nvidia-compute-utils-525                       
525.116.04-0ubuntu0.23.04.1             amd64        NVIDIA compute utilities
  ii  nvidia-compute-utils-535                       535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA compute utilities
  ii  nvidia-dkms-535                                535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA DKMS package
  ii  nvidia-driver-535                              535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA driver metapackage
  ii  nvidia-firmware-535-535.54.03                  535.54.03-0ubuntu0.23.04.2 
             amd64        Firmware files used by the kernel module
  rc  nvidia-kernel-common-525                       
525.116.04-0ubuntu0.23.04.1             amd64        Shared files used with the 
kernel module
  ii  nvidia-kernel-common-535                       535.54.03-0ubuntu0.23.04.2 
             amd64        Shared files used with the kernel module
  ii  nvidia-kernel-source-535                       535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA kernel source package
  ii  nvidia-prime                                   0.8.17.1                   
             all          Tools to enable NVIDIA's Prime
  ii  nvidia-settings                                510.47.03-0ubuntu1         
             amd64        Tool for configuring the NVIDIA graphics driver
  ii  nvidia-utils-535                               535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA driver support binaries
  ii  screen-resolution-extra                        0.18.3                     
             all          Extension for the nvidia-settings control panel
  ii  xserver-xorg-video-nvidia-535                  535.54.03-0ubuntu0.23.04.2 
             amd64        NVIDIA binary Xorg driver

  ProblemType: Bug
  DistroRelease: Ubuntu 23.04
  Package: xorg 1:7.7+23ubuntu2
  ProcVersionSignature: Ubuntu 6.2.0-1007.7-lowlatency 6.2.12
  Uname: Linux 6.2.0-1007-lowlatency x86_64
  ApportVersion: 2.26.1-0ubuntu2
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: pass
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Jul  2 11:33:36 2023
  DistUpgraded: Fresh install
  DistroCodename: lunar
  DistroVariant: ubuntu
  DkmsStatus: nvidia/535.54.03: added
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation TigerLake-H GT1 [UHD Graphics] [8086:9a68] (rev 01) 
(prog-if 00 [VGA controller])
     Subsystem: Dell TigerLake-H GT1 [UHD Graphics] [1028:0a71]
   NVIDIA Corporation GA107M [GeForce RTX 3050 Mobile] [10de:25a2] (rev a1) 
(prog-if 00 [VGA controller])
     Subsystem: Dell GA107M [GeForce RTX 3050 Mobile] [1028:0a71]
  InstallationDate: Installed on 2023-05-18 (44 days ago)
  InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
  MachineType: Dell Inc. Dell G15 5511
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   XDG_RUNTIME_DIR=<set>
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.2.0-1007-lowlatency 
root=UUID=9a41f8cd-8ba0-47c9-aff0-9ed6ddef55c7 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/09/2023
  dmi.bios.release: 1.22
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.22.1
  dmi.board.name: 0746J2
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A05
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.22.1:bd05/09/2023:br1.22:svnDellInc.:pnDellG155511:pvr:rvnDellInc.:rn0746J2:rvrA05:cvnDellInc.:ct10:cvr:sku0A71:
  dmi.product.family: GSeries
  dmi.product.name: Dell G15 5511
  dmi.product.sku: 0A71
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.114-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.2-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-1ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20210115-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.17-2build1

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