Public bug reported:

I have a Thinkpad P15 with a A2000 GPU with Ubuntu 22.04.1 LTS.

This happens using Wayland and nvidia cuda drivers.

It seems like the system uses very long to identify the screens. This
happens when I use external monitors, but also when only using the
laptop screen. Changing the screen layout takes so long that I am unable
to accept the change before it is reverted to the previous.

Only the mouse pointer is visible, the rest of the screens are black
during this process.

$ apt-cache policy cuda
cuda:
  Installed: 11.7.1-1
  Candidate: 11.8.0-1
  Version table:
     11.8.0-1 600
        600 
https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64  
Packages
 *** 11.7.1-1 600
        600 
https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64  
Packages
        100 /var/lib/dpkg/status
     11.7.0-1 600
        600 
https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64  
Packages

$ nvidia-smi
Thu Oct 13 10:46:02 2022       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 515.65.01    Driver Version: 515.65.01    CUDA Version: 11.7     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  NVIDIA RTX A200...  On   | 00000000:01:00.0  On |                  N/A |
| N/A   46C    P5     8W /  N/A |    146MiB /  4096MiB |     22%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      4451      G   /usr/lib/xorg/Xorg                145MiB |
+-----------------------------------------------------------------------------+

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-shell 42.4-0ubuntu0.22.04.1
ProcVersionSignature: Ubuntu 5.15.0-48.54-generic 5.15.53
Uname: Linux 5.15.0-48-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 13 10:25:17 2022
DisplayManager: gdm3
InstallationDate: Installed on 2022-09-05 (37 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 
(20220809.1)
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions: mutter-common 42.2-0ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy

** Attachment added: "journalctl -b-0"
   
https://bugs.launchpad.net/bugs/1992756/+attachment/5623831/+files/currentboot.txt

-- 
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1992756

Title:
  Screen turns black for a long time after each login and when detecting
  screens or changing screen layout.

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