GDM not starting after upgrade to 49.0.1-1

Description:

After the latest upgrade GDM is not starting. Seems like I'm not the only one, but people fixed this by updating to testing repo. I don't use testing repos at the moment.

https://bbs.archlinux.org/viewtopic.php?id=308372

Additional info:

• gdm 49.0.1-1
• mutter 49.0-3
• gnome-shell 1:49.0-2

pacman.log

217955:[2025-09-24T08:58:51+0300] [ALPM] upgraded libgdm (48.0-2 -> 49.0.1-1)
217957:[2025-09-24T08:58:51+0300] [ALPM] upgraded mutter (48.5-1 -> 49.0-3)
217958:[2025-09-24T08:58:51+0300] [ALPM] upgraded gnome-shell (1:48.5-1 -> 1:49.0-2)
217959:[2025-09-24T08:58:52+0300] [ALPM] upgraded gdm (48.0-2 -> 49.0.1-1)
217982:[2025-09-24T08:58:53+0300] [ALPM] upgraded gnome-shell-extensions (48.3-2 -> 49.0-1)

dmesg

[ +10.605305] traps: gdm[8884] trap int3 ip:7f4911bbe64b sp:7fff1920aae0 error:0 in libglib-2.0.so.0.8600.0[6564b,7f4911b77000+a7000]
[  +0.516678] traps: gnome-session-i[9191] trap int3 ip:7f87ffbfdb8c sp:7ffe8ffb70e0 error:0 in libglib-2.0.so.0.8600.0[64b8c,7f87ffbb7000+a7000]
[  +0.194607] traps: gnome-session-i[9228] trap int3 ip:7f92d6646b8c sp:7fff7e0f2db0 error:0 in libglib-2.0.so.0.8600.0[64b8c,7f92d6600000+a7000]
[  +0.163773] traps: gnome-session-i[9265] trap int3 ip:7fd1add29b8c sp:7ffd72df55f0 error:0 in libglib-2.0.so.0.8600.0[64b8c,7fd1adce3000+a7000]
[  +0.179944] traps: gnome-session-i[9302] trap int3 ip:7f45b0ba1b8c sp:7ffd9664d6d0 error:0 in libglib-2.0.so.0.8600.0[64b8c,7f45b0b5b000+a7000]
[  +0.170054] traps: gnome-session-i[9339] trap int3 ip:7f99745adb8c sp:7ffea69ba2d0 error:0 in libglib-2.0.so.0.8600.0[64b8c,7f9974567000+a7000]
[  +0.192801] traps: gnome-session-i[9376] trap int3 ip:7fac0daf5b8c sp:7ffe48cdfc90 error:0 in libglib-2.0.so.0.8600.0[64b8c,7fac0daaf000+a7000]

serg@partizan ~> systemctl status gdm                       
● gdm.service - GNOME Display Manager
     Loaded: loaded (/usr/lib/systemd/system/gdm.service; enabled; preset: disabled)
     Active: active (running) since Wed 2025-09-24 16:58:14 EEST; 408ms ago
 Invocation: 5af2d69447db4b48a2ac0f463d10ec54
   Main PID: 12205 (gdm)
      Tasks: 10 (limit: 38247)
     Memory: 4.3M (peak: 5M)
        CPU: 46ms
     CGroup: /system.slice/gdm.service
             ├─12205 /usr/bin/gdm
             └─12284 "gdm-session-worker [pam/gdm-launch-environment]"

Sep 24 16:58:14 partizan systemd[1]: Starting GNOME Display Manager...
Sep 24 16:58:14 partizan systemd[1]: Started GNOME Display Manager.
Sep 24 16:58:14 partizan gdm[12205]: Gdm: GdmDisplay: Session never registered, failing
Sep 24 16:58:14 partizan gdm[12205]: Gdm: Child process -12222 was already dead.
Sep 24 16:58:14 partizan gdm[12205]: Gdm: GdmDisplay: Session never registered, failing
Sep 24 16:58:14 partizan gdm[12205]: Gdm: Child process -12222 was already dead.
Sep 24 16:58:14 partizan gdm[12205]: Gdm: GdmDisplay: Session never registered, failing
Sep 24 16:58:14 partizan gdm[12205]: Gdm: Child process -12259 was already dead.
Sep 24 16:58:14 partizan gdm[12205]: Gdm: GdmDisplay: Session never registered, failing
Sep 24 16:58:14 partizan gdm[12205]: Gdm: Child process -12259 was already dead.

Steps to reproduce:

That's the tricky one, because it only happens on my desktop. On laptop everything is fine.