black scree with crosshair issue, Intel GPU, Ubuntu 24.04

[Neer]

On Ubuntu 24.04 (GNOME Shell 46) with Intel integrated graphics, the system works normally after login.
However, when I lock the screen using Super + L, leave the laptop idle for some time, and then return to unlock it, after entering the correct password the screen becomes completely black with only a visible crosshair mouse cursor.
The system is still running (keyboard and mouse respond), but the desktop never appears.
This issue happens every time after locking the screen for a while and can only be recovered by rebooting.
This does not occur immediately after login sometime happen but most probabaly not, only after using the lock screen every time happpen.

Ubuntu 24.04.3 LTS (Noble Numbat)
gnome-shell 46.0

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gnome-shell 46.0-0ubuntu6~24.04.12
ProcVersionSignature: Ubuntu 6.14.0-37.37~24.04.1-generic 6.14.11
Uname: Linux 6.14.0-37-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 9 19:29:30 2026
DisplayManager: gdm3
InstallationDate: Installed on 2025-11-29 (41 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
RelatedPackageVersions: mutter-common 46.2-1ubuntu0.24.04.13
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Thanks for the bug report. I can think of several things that might be causing this.

First we need to rule out buggy extensions so please delete all local extensions:

  cd ~/.local/share/gnome-shell/
  rm -rf extensions

and then log in again.

If the problem persists then next please try disabling the magnifier and thus the crosshairs before locking the screen.

If the problem still persists after that then next time it happens please:

1. Reboot immediately.
2. Run: journalctl -b-1 > prevboot.txt
3. Attach the resulting text file here.

[Alessandro Astone (aleasto)]

> please try disabling the magnifier and thus the crosshairs

I believe the "corsshairs" might be the Xorg 'x' cursor.

[Daniel van Vugt (vanvugt)]

If "crosshair" does mean the X cursor then gnome-shell has crashed so please follow these steps:

1. Run these commands:
     journalctl -b0 > journal.txt
     journalctl -b-1 > prevjournal.txt
   and attach the resulting text files here.

2. Look in /var/crash for crash files and if found run:
       ubuntu-bug YOURFILE.crash
   Then tell us the ID of the newly-created bug.

3. If step 2 failed then look at https://errors.ubuntu.com/user/ID where ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine. Do you find any links to recent problems on that page? If so then please send the links to us.

Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments. It would also be a security risk for yourself.