I'm experiencing the same issue. Here are my system details:

**System:**
lsb_release -a                                     
Distributor ID: Ubuntu
Description:    Ubuntu 26.04 LTS
Release:        26.04
Codename:       resolute

mutter:
  Instalado: 50.1-0ubuntu2
  Candidato: 50.1-0ubuntu2
  Tabela de versão:
     50.1-0ubuntu2.1 100
        100 http://archive.ubuntu.com/ubuntu resolute-proposed/universe amd64 
Packages
 *** 50.1-0ubuntu2 500
        500 http://archive.ubuntu.com/ubuntu resolute/universe amd64 Packages
        100 /var/lib/dpkg/status
gnome-shell:
  Instalado: 50.1-0ubuntu1
  Candidato: 50.1-0ubuntu1
  Tabela de versão:
 *** 50.1-0ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu resolute/main amd64 Packages
        100 /var/lib/dpkg/status

**Hardware / GPUs:**
lspci -nnk | grep -A3 -iE "vga|display|3d|render"
00:02.0 VGA compatible controller [0300]: Intel Corporation Alder Lake-UP3 GT2 
[Iris Xe Graphics] [8086:46a8] (rev 0c)
        Subsystem: Lenovo Device [17aa:3b3a]
        Kernel driver in use: i915
        Kernel modules: i915, xe

**DRI devices:**
ls -la /dev/dri/
total 0
drwxr-xr-x  3 root root        100 May 12 07:51 .
drwxr-xr-x 22 root root       4940 May 12 07:51 ..
drwxr-xr-x  2 root root        100 May 12 07:51 by-path
crw-rw----+ 1 root video  226,   1 May 12 13:57 card1
crw-rw----+ 1 root render 226, 128 May 12 13:57 renderD128

**Driver in use:**
glxinfo | grep renderer
    GLX_MESA_copy_sub_buffer, GLX_MESA_gl_interop, GLX_MESA_query_renderer, 
    GLX_MESA_gl_interop, GLX_MESA_query_renderer, GLX_MESA_swap_control, 
Extended renderer info (GLX_MESA_query_renderer):
OpenGL renderer string: Mesa Intel(R) Iris(R) Xe Graphics (ADL GT2)

**Error logs (journalctl):**
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to query buffer age, got 
error 3003
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to lock front buffer on 
/dev/dri/card1: gbm_surface_lock_front_buffer failed
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to query buffer age, got 
error 3003
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to lock front buffer on 
/dev/dri/card1: gbm_surface_lock_front_buffer failed
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to query buffer age, got 
error 3003
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to lock front buffer on 
/dev/dri/card1: gbm_surface_lock_front_buffer failed
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to query buffer age, got 
error 3003
mai 12 14:04:06 igorepnote gnome-shell[173096]: Failed to lock front buffer on 
/dev/dri/card1: gbm_surface_lock_front_buffer failed

Single or multiple monitors?
xrandr --listmonitors
Monitors: 2
 0: +*DP-1 1920/480x1080/260+0+0  DP-1
 1: +HDMI-1 1920/480x1080/260+1920+0  HDMI-1
 
External monitor connected? + connection type
xrandr | grep " connected"
DP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 
480mm x 260mm
HDMI-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 
480mm x 260mm

Hybrid GPU system (iGPU + dGPU)?
No
lspci -nnk | grep -A2 -iE 'vga|3d|display|render' | grep -E 
'VGA|3D|Display|Kernel driver'
00:02.0 VGA compatible controller [0300]: Intel Corporation Alder Lake-UP3 GT2 
[Iris Xe Graphics] [8086:46a8] (rev 0c)
        Kernel driver in use: i915

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2152252

Title:
  GNOME Wayland repeatedly fails to lock front buffer on Intel iGPU and
  XWayland disconnects on hybrid Intel + NVIDIA system.

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