unable to boot kernel 5.15.0.50

Hi,

After a fresh install of Ubuntu 22.04 I'm unable to boot with kernel 5.15.0.50

Normal boot on 5.15.0.50 : stuck at boot with the following message :
INFO: task gpu-manager:749 blocked for more than XXX seconds

I deactivated the silent splash screen on Grub to get more details about what's wrong :

"a start job is running for Detect the available GPU..."

Recovery mode on 5.15.0.50: I can boot but after login only integrated monitor is working

Normal boot on 5.15.0.43: No issue

Configuration: Alienware 15R3 Nvidia GTX 1080 Mobile + Integrated Intel GPU

Nvidia drivers: 515

What I'v done so far :

-Deactivated gpu-manager in grub: no effect
-Uninstall intel-microcode or downgraded intel-microcode : no effect
-Tried various nvidia drivers: no effect
-Tried other external monitors: no effect
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: gwendal 1853 F.... pulseaudio
 /dev/snd/controlC2: gwendal 1853 F.... pulseaudio
 /dev/snd/controlC1: gwendal 1853 F.... pulseaudio
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 22.04
InstallationDate: Installed on 2022-10-12 (6 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
MachineType: Alienware Alienware 15 R3
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-50-generic root=/dev/mapper/vgubuntu-root ro
ProcVersionSignature: Ubuntu 5.15.0-50.56-generic 5.15.60
RelatedPackageVersions:
 linux-restricted-modules-5.15.0-50-generic N/A
 linux-backports-modules-5.15.0-50-generic N/A
 linux-firmware 20220329.git681281e4-0ubuntu3.5
Tags: jammy
Uname: Linux 5.15.0-50-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/21/2020
dmi.bios.release: 1.10
dmi.bios.vendor: Alienware
dmi.bios.version: 1.10.0
dmi.board.name: Alienware 15 R3
dmi.board.vendor: Alienware
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Alienware
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnAlienware:bvr1.10.0:bd07/21/2020:br1.10:svnAlienware:pnAlienware15R3:pvr1.10.0:rvnAlienware:rnAlienware15R3:rvrA00:cvnAlienware:ct10:cvrNotSpecified:sku0774:
dmi.product.family: Alienware
dmi.product.name: Alienware 15 R3
dmi.product.sku: 0774
dmi.product.version: 1.10.0
dmi.sys.vendor: Alienware