Forum Linux.débutant LinuxMint s'éteint tout seul et redémarre

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Bonjour,
Je viens d'installer LinuxMint 22.1.
Il fonctionne très bien, et il se met à planter inopinément, l'écran devient noir et il redémarre tout seul !
Depuis 2 jours que je suis sous LinuxMint, c'est déjà arrivé au moins une dizaine de fois.
Que faire dans un cas pareil ?
Merci de m'aider
Voici les caractéristiques de mon ordi portable :

Système:

< Kernel: 6.8.0-63-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3.0 clocksource: tsc
Desktop: Cinnamon v: 6.4.8 tk: GTK v: 3.24.41 wm: Muffin v: 6.4.1 vt: 7 dm: LightDM v: 1.30.0
Distro: Linux Mint 22.1 Xia base: Ubuntu 24.04 noble
Machine:
Type: Laptop System: LENOVO product: 2447MG3 v: ThinkPad W530 serial:
Chassis: type: 10 serial:
Mobo: LENOVO model: 2447MG3 serial: part-nu: LENOVO_MT_2447
uuid: UEFI-[Legacy]: LENOVO v: G5ETB6WW (2.76 ) date: 09/09/2019
CPU:
Info: quad core model: Intel Core i7-3740QM bits: 64 type: MT MCP smt: enabled arch: Ivy Bridge
rev: 9 cache: L1: 256 KiB L2: 1024 KiB L3: 6 MiB
Speed (MHz): avg: 1197 high: 1200 min/max: 1200/3700 cores: 1: 1197 2: 1197 3: 1198 4: 1198
5: 1197 6: 1200 7: 1197 8: 1197 bogomips: 43100
Flags: avx ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel 3rd Gen Core processor Graphics vendor: Lenovo driver: i915 v: kernel arch: Gen-7
ports: active: LVDS-1 empty: VGA-1 bus-ID: 00:02.0 chip-ID: 8086:0166 class-ID: 0300
Device-2: NVIDIA GK107GLM [Quadro K2000M] vendor: Lenovo driver: nouveau v: kernel arch: Kepler
pcie: speed: 2.5 GT/s lanes: 16 ports: active: none empty: DP-1, DP-2, DP-3, LVDS-2, VGA-2
bus-ID: 01:00.0 chip-ID: 10de:0ffb class-ID: 0300 temp: 50.0 C
Device-3: Bison ThinkPad Integrated Camera driver: uvcvideo type: USB rev: 2.0 speed: 480 Mb/s
lanes: 1 bus-ID: 1-1.6:5 chip-ID: 5986:02d2 class-ID: 0e02
Display: x11 server: X.Org v: 21.1.11 with: Xwayland v: 23.2.6 driver: X: loaded: modesetting
unloaded: fbdev,vesa dri: crocus gpu: i915 display-ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22") s-diag: 582mm (22.93")
Monitor-1: LVDS-1 model: Lenovo 0x40b2 res: 1920x1080 hz: 60 dpi: 142
size: 344x193mm (13.54x7.6") diag: 394mm (15.5") modes: 1920x1080
API: EGL v: 1.5 hw: drv: intel crocus drv: nvidia nouveau platforms: device: 0 drv: nouveau
device: 1 drv: crocus device: 2 drv: swrast gbm: drv: nouveau surfaceless: drv: nouveau x11:
drv: crocus inactive: wayland
API: OpenGL v: 4.5 compat-v: 4.2 vendor: intel mesa v: 24.2.8-1ubuntu1~24.04.1 glx-v: 1.4
direct-render: yes renderer: Mesa Intel HD Graphics 4000 (IVB GT2) device-ID: 8086:0166
Audio:
Device-1: Intel 7 Series/C216 Family High Definition Audio vendor: Lenovo 7 driver: snd_hda_intel
v: kernel bus-ID: 00:1b.0 chip-ID: 8086:1e20 class-ID: 0403
Device-2: NVIDIA GK107 HDMI Audio vendor: Lenovo driver: snd_hda_intel v: kernel pcie:
speed: 2.5 GT/s lanes: 16 bus-ID: 01:00.1 chip-ID: 10de:0e1b class-ID: 0403
API: ALSA v: k6.8.0-63-generic status: kernel-api
Server-1: PipeWire v: 1.0.5 status: active with: 1: pipewire-pulse status: active
2: wireplumber status: active 3: pipewire-alsa type: plugin
Network:
Device-1: Intel 82579LM Gigabit Network vendor: Lenovo driver: e1000e v: kernel port: 7080
bus-ID: 00:19.0 chip-ID: 8086:1502 class-ID: 0200
IF: enp0s25 state: down mac:
Device-2: Intel Centrino Advanced-N 6205 [Taylor Peak] driver: iwlwifi v: kernel pcie:
speed: 2.5 GT/s lanes: 1 bus-ID: 03:00.0 chip-ID: 8086:0085 class-ID: 0280
IF: wlp3s0 state: up mac:
Bluetooth:
Device-1: Broadcom BCM20702 Bluetooth 4.0 [ThinkPad] driver: btusb v: 0.8 type: USB rev: 2.0
speed: 12 Mb/s lanes: 1 bus-ID: 1-1.4:4 chip-ID: 0a5c:21e6 class-ID: fe01 serial:
Report: hciconfig ID: hci0 rfk-id: 1 state: up address: bt-v: 4.0 lmp-v: 6 sub-v: 220e
hci-v: 6 rev: 1000 class-ID: 7c010c
Drives:
Local Storage: total: 689.33 GiB used: 46.43 GiB (6.7%)
ID-1: /dev/sda vendor: Emtec model: X150 240GB size: 223.57 GiB speed: 6.0 Gb/s tech: SSD
serial: fw-rev: YA.3 scheme: GPT
ID-2: /dev/sdb vendor: HGST (Hitachi) model: HTS725050A7E630 size: 465.76 GiB speed: 6.0 Gb/s
tech: HDD rpm: 7200 serial: fw-rev: B550 scheme: GPT
Partition:
ID-1: / size: 218.03 GiB used: 9.28 GiB (4.3%) fs: ext4 dev: /dev/sda1
ID-2: /boot/efi size: 1006 MiB used: 6.1 MiB (0.6%) fs: vfat dev: /dev/sda2
ID-3: /home size: 455.45 GiB used: 37.15 GiB (8.2%) fs: ext4 dev: /dev/sdb1
Swap:
Alert: No swap data was found.
USB:
Hub-1: 1-0:1 info: full speed or root hub ports: 3 rev: 2.0 speed: 480 Mb/s lanes: 1
chip-ID: 1d6b:0002 class-ID: 0900
Hub-2: 1-1:2 info: Intel Integrated Rate Matching Hub ports: 6 rev: 2.0 speed: 480 Mb/s
lanes: 1 chip-ID: 8087:0024 class-ID: 0900
Device-1: 1-1.3:3 info: Upek TouchChip Fingerprint Coprocessor (WBF advanced mode)
type: driver: N/A interfaces: 1 rev: 1.1 speed: 12 Mb/s lanes: 1 power: 100mA
chip-ID: 147e:2020 class-ID: 0000
Device-2: 1-1.4:4 info: Broadcom BCM20702 Bluetooth 4.0 [ThinkPad] type: Bluetooth
driver: btusb interfaces: 4 rev: 2.0 speed: 12 Mb/s lanes: 1 chip-ID: 0a5c:21e6 class-ID: fe01
serial:
Device-3: 1-1.6:5 info: Bison ThinkPad Integrated Camera type: video driver: uvcvideo
interfaces: 2 rev: 2.0 speed: 480 Mb/s lanes: 1 power: 200mA chip-ID: 5986:02d2 class-ID: 0e02
Hub-3: 2-0:1 info: full speed or root hub ports: 3 rev: 2.0 speed: 480 Mb/s lanes: 1
chip-ID: 1d6b:0002 class-ID: 0900
Hub-4: 2-1:2 info: Intel Integrated Rate Matching Hub ports: 8 rev: 2.0 speed: 480 Mb/s
lanes: 1 chip-ID: 8087:0024 class-ID: 0900
Hub-5: 2-1.8:3 info: Lenovo ThinkPad Mini Dock Plus Series 3 ports: 6 rev: 2.0 speed: 480 Mb/s
lanes: 1 power: 2mA chip-ID: 17ef:100a class-ID: 0900
Hub-6: 3-0:1 info: hi-speed hub with single TT ports: 4 rev: 2.0 speed: 480 Mb/s lanes: 1
chip-ID: 1d6b:0002 class-ID: 0900
Device-1: 3-1:2 info: Logitech Logi Bolt Receiver type: keyboard,mouse,HID
driver: hid-generic,hid-multitouch,usbhid interfaces: 4 rev: 2.0 speed: 12 Mb/s lanes: 1
power: 98mA chip-ID: 046d:c548 class-ID: 0300
Device-2: 3-2:4 info: SHARKOON GmbH 2.4GHz Wireless rechargeable vertical mouse [More&Better]
type: mouse driver: hid-generic,usbhid interfaces: 1 rev: 1.1 speed: 12 Mb/s lanes: 1
power: 100mA chip-ID: 1ea7:0064 class-ID: 0301
Hub-7: 4-0:1 info: super-speed hub ports: 4 rev: 3.0 speed: 5 Gb/s lanes: 1 chip-ID: 1d6b:0003
class-ID: 0900
Sensors:
System Temperatures: cpu: 57.0 C mobo: N/A gpu: nouveau temp: 51.0 C
Fan Speeds (rpm): fan-1: 3293
Repos:
Packages: pm: dpkg pkgs: 1995
No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list
1: deb https: //mirror.cyberbits.eu/linuxmint/packages xia main upstream import backport
2: deb http: //mirror.kamp.de/ubuntu noble main restricted universe multiverse
3: deb http: //mirror.kamp.de/ubuntu noble-updates main restricted universe multiverse
4: deb http: //mirror.kamp.de/ubuntu noble-backports main restricted universe multiverse
5: deb http: //security.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
Info:
Memory: total: 12 GiB note: est. available: 11.22 GiB used: 4.24 GiB (37.8%)
Processes: 282 Power: uptime: 58m states: freeze,mem,disk suspend: deep wakeups: 0
hibernate: platform Init: systemd v: 255 target: graphical (5) default: graphical
Compilers: gcc: 13.3.0 Client: Cinnamon v: 6.4.8 inxi: 3.3.34>