System won't reboot

Support
1

I have an old Dell Optiplex-390 desktop and it has been this way from day one, which was 2020/06/06. I was hoping that it will fix itself eventually after each update, but it never did! system won’t reboot. I always have to shut it down and start it after each update. Any solution to fix this?
It gets stuck here:

IMG_0844

System:
Kernel: 5.15.84-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
Desktop: KDE Plasma v: 5.26.4 Distro: Manjaro Linux base: Arch Linux

Machine:Type: Desktop System: Dell product: OptiPlex 390

CPU:
Info: quad core model: Intel Core i5-2400 bits: 64 type: MCP
arch: Sandy Bridge rev: 7 cache: L1: 256 KiB L2: 1024 KiB L3: 6 MiB
Speed (MHz): avg: 1596 high: 1597 min/max: 1600/3400 cores: 1: 1596
2: 1596 3: 1596 4: 1597 bogomips: 24753

Graphics:
Device-1: AMD Cedar [Radeon HD 5000/6000/7350/8350 Series] vendor: Dell
driver: radeon v: kernel arch: TeraScale-2 bus-ID: 01:00.0 temp: 48.0 C
Display: x11 server: X.Org v: 21.1.6 driver: X: loaded: radeon

2

provide full system info, and use formatting, click this icon: </>, and copy this output there:
inxi -Fazv7
disable watchdog with these instructions

3 
inxi -Fazy                                                         ✔ 
System:
  Kernel: 5.15.84-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    parameters: BOOT_IMAGE=/vmlinuz-5.15-x86_64
    root=UUID=a8836b2b-7ede-42d4-8b8c-ee008e22d84d rw quiet
    cryptdevice=UUID=e077faba-536a-4f55-8298-fe211430e808:luks-e077faba-536a-4f55-8298-fe211430e808
    root=/dev/mapper/luks-e077faba-536a-4f55-8298-fe211430e808 apparmor=1
    security=apparmor udev.log_priority=3
  Desktop: KDE Plasma v: 5.26.4 tk: Qt v: 5.15.7 wm: kwin_x11 vt: 1 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop System: Dell product: OptiPlex 390 v: 01
    serial: <superuser required> Chassis: type: 6 serial: <superuser required>
  Mobo: Dell model: 0M5DCD v: A00 serial: <superuser required> BIOS: Dell
    v: A03 date: 10/26/2011
CPU:
  Info: model: Intel Core i5-2400 bits: 64 type: MCP arch: Sandy Bridge
    gen: core 2 level: v2 built: 2010-12 process: Intel 32nm family: 6
    model-id: 0x2A (42) stepping: 7 microcode: 0x2F
  Topology: cpus: 1x cores: 4 smt: <unsupported> cache: L1: 256 KiB
    desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB L3: 6 MiB
    desc: 1x6 MiB
  Speed (MHz): avg: 1596 min/max: 1600/3400 scaling: driver: intel_cpufreq
    governor: schedutil cores: 1: 1596 2: 1596 3: 1596 4: 1596 bogomips: 24754
  Flags: avx ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    disabled
  Type: mds mitigation: Clear CPU buffers; SMT disabled
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data status: Unknown: No mitigations
  Type: retbleed status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl and seccomp
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Retpolines, IBPB: conditional, IBRS_FW,
    STIBP: disabled, RSB filling, PBRSB-eIBRS: Not affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: AMD Cedar [Radeon HD 5000/6000/7350/8350 Series] vendor: Dell
    driver: radeon v: kernel arch: TeraScale-2 code: Evergreen
    process: TSMC 32-40nm built: 2009-15 pcie: gen: 2 speed: 5 GT/s lanes: 16
    ports: active: DVI-I-1,DVI-I-2 empty: none bus-ID: 01:00.0
    chip-ID: 1002:68f9 class-ID: 0300 temp: 44.0 C
  Display: x11 server: X.Org v: 21.1.6 compositor: kwin_x11 driver: X:
    loaded: radeon unloaded: modesetting alternate: fbdev,vesa dri: r600
    gpu: radeon display-ID: :0 screens: 1
  Screen-1: 0 s-res: 3840x1080 s-dpi: 96 s-size: 1016x285mm (40.00x11.22")
    s-diag: 1055mm (41.54")
  Monitor-1: DVI-I-1 mapped: DVI-0 pos: primary,left
    model: Sceptre E248W-1920 built: 2016 res: 1920x1080 hz: 60 dpi: 93
    gamma: 1.2 size: 527x296mm (20.75x11.65") diag: 604mm (23.8") ratio: 16:9
    modes: max: 1920x1080 min: 720x400
  Monitor-2: DVI-I-2 mapped: DVI-1 pos: right model: AOC 2351
    serial: <filter> built: 2011 res: 1920x1080 hz: 60 dpi: 96 gamma: 1.2
    size: 509x286mm (20.04x11.26") diag: 584mm (23") ratio: 16:9 modes:
    max: 1920x1080 min: 720x400
  API: OpenGL v: 4.5 Mesa 22.3.1 renderer: AMD CEDAR (DRM 2.50.0 /
    5.15.84-1-MANJARO LLVM 14.0.6) direct render: Yes
Audio:
  Device-1: Intel 6 Series/C200 Series Family High Definition Audio
    vendor: Dell driver: snd_hda_intel v: kernel bus-ID: 00:1b.0
    chip-ID: 8086:1c20 class-ID: 0403
  Sound API: ALSA v: k5.15.84-1-MANJARO running: yes
  Sound Server-1: JACK v: 1.9.21 running: no
  Sound Server-2: PulseAudio v: 16.1 running: yes
  Sound Server-3: PipeWire v: 0.3.63 running: yes
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1 port: 3000
    bus-ID: 04:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp4s0 state: up speed: 100 Mbps duplex: full mac: <filter>
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Dell driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
    port: 2000 bus-ID: 05:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp5s0 state: down mac: <filter>
Drives:
  Local Storage: total: 238.47 GiB used: 45.86 GiB (19.2%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Samsung model: MZ7TE256HMHP-000H1
    size: 238.47 GiB block-size: physical: 512 B logical: 512 B speed: <unknown>
    type: SSD serial: <filter> rev: 9H0Q scheme: MBR
Partition:
  ID-1: / raw-size: 237.78 GiB size: 232.99 GiB (97.98%)
    used: 45.74 GiB (19.6%) fs: ext4 dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-e077faba-536a-4f55-8298-fe211430e808
  ID-2: /boot raw-size: 700 MiB size: 688.3 MiB (98.33%)
    used: 122.7 MiB (17.8%) fs: ext2 dev: /dev/sda1 maj-min: 8:1
Swap:
  Alert: No swap data was found.
Sensors:
  System Temperatures: cpu: 30.0 C mobo: N/A gpu: radeon temp: 44.0 C
  Fan Speeds (RPM): N/A
Info:
  Processes: 190 Uptime: 0m wakeups: 0 Memory: 7.73 GiB used: 1.04 GiB (13.5%)
  Init: systemd v: 252 default: graphical tool: systemctl Compilers:
  gcc: 12.2.0 clang: 14.0.6 Packages: pm: pacman pkgs: 1428 libs: 395
  tools: pamac pm: flatpak pkgs: 0 Shell: Zsh v: 5.9 running-in: konsole
  inxi: 3.3.24
4

what about this? did you disable it and tested with the commands if it returns ‘0’?