Thanks. I can see the external display is connected by HDMI to the
NVIDIA GPU. And you seem to be using Xorg exclusively so this is a bug
between Xorg and the NVIDIA driver.

I think it's likely the issue correlates with these error messages:

[drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID
0x00000100] Failed to grab modeset ownership

Because that means the NVIDIA driver has lost control of its displays
(the external monitor).

As a possible workaround you might like to try adding a kernel
parameter:

  nvidia_drm.modeset=0

which should at least disable the code path causing the above error
message.


** Changed in: nvidia-graphics-drivers-530 (Ubuntu)
       Status: Incomplete => New

** Also affects: xorg-server (Ubuntu)
   Importance: Undecided
       Status: New

** Tags added: hybrid multigpu multimonitor nvidia

** Summary changed:

- External display sometimes frozen, after logout/login has only black screen.
+ [nvidia] External display sometimes frozen, after logout/login has only black 
screen.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to nvidia-graphics-drivers-530 in Ubuntu.
https://bugs.launchpad.net/bugs/2025320

Title:
  [nvidia] External display sometimes frozen, after logout/login has
  only black screen.

Status in nvidia-graphics-drivers-530 package in Ubuntu:
  New
Status in xorg-server package in Ubuntu:
  New

Bug description:
  After some system updates my external screen is not working properly.
  After logout/log in it keeps black or with a background image and is
  frozen. Moreover, it happens from time to time even when you were
  logged in without any explanation.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: nvidia-driver-530 530.41.03-0ubuntu0.22.04.2
  ProcVersionSignature: Ubuntu 5.19.0-45.46~22.04.1-generic 5.19.17
  Uname: Linux 5.19.0-45-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Jun 29 09:06:10 2023
  InstallationDate: Installed on 2023-02-19 (129 days ago)
  InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 
(20220809.1)
  RebootRequiredPkgs: Error: path contained symlinks.
  SourcePackage: nvidia-graphics-drivers-530
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-530/+bug/2025320/+subscriptions


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