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kubuntu 24.04.1 with recommended nvidia driver (sudo ubuntu-drivers
autoinstall) doesn't reach sddm greeter:

>$ lsb_release -rd
No LSB modules are available.
Description:    Ubuntu 24.04.1 LTS
Release:        24.04


>$ LANG=C inxi -Fxxxrzc0 --usb > inxi.out

System:
  Kernel: 6.8.0-49-generic arch: x86_64 bits: 64 compiler: gcc v: 13.2.0 
clocksource: tsc
  Console: tty 3 DM: SDDM Distro: Ubuntu 24.04.1 LTS (Noble Numbat)
Machine:
  Type: Desktop Mobo: Micro-Star model: MAG B550 TOMAHAWK (MS-7C91) v: 2.0
    serial: <superuser required> uuid: <superuser required> UEFI: American 
Megatrends LLC. v: A.G0
    date: 03/12/2024
CPU:
  Info: 8-core model: AMD Ryzen 7 5800X bits: 64 type: MT MCP smt: enabled 
arch: Zen 3+ rev: 0
    cache: L1: 512 KiB L2: 4 MiB L3: 32 MiB
  Speed (MHz): avg: 2441 high: 3800 min/max: 2200/4850 boost: enabled cores: 1: 
2200 2: 2200
    3: 2200 4: 2878 5: 2200 6: 2200 7: 2200 8: 2200 9: 2200 10: 2200 11: 2879 
12: 3108 13: 2200
    14: 2200 15: 2200 16: 3800 bogomips: 121596
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: NVIDIA GP104 [GeForce GTX 1070] driver: nvidia v: 550.120 arch: 
Pascal pcie:
    speed: 2.5 GT/s lanes: 16 bus-ID: 2b:00.0 chip-ID: 10de:1b81 class-ID: 0300
  Display: server: X.org v: 1.21.1.11 with: Xwayland v: 23.2.6 driver: X: 
loaded: nvidia
    unloaded: fbdev,modesetting,nouveau,vesa gpu: nvidia tty: 480x135
  Monitor-1: Unknown-1 size-res: N/A in console modes: 3840x2160
  API: EGL v: 1.5 hw: drv: nvidia platforms: device: 0 drv: nvidia device: 2 
drv: swrast
    surfaceless: drv: nvidia inactive: gbm,wayland,x11,device-1
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: mesa v: 24.0.9-0ubuntu0.2
    note: console (EGL sourced) renderer: NVIDIA GeForce GTX 1070/PCIe/SSE2, 
llvmpipe (LLVM 17.0.6
    256 bits)
  API: Vulkan v: 1.3.275 layers: 4 surfaces: N/A device: 0 type: discrete-gpu 
driver: N/A
    device-ID: 10de:1b81 device: 1 type: cpu driver: N/A device-ID: 10005:0000
Audio:
  Device-1: NVIDIA GP104 High Definition Audio driver: snd_hda_intel v: kernel 
pcie: speed: 8 GT/s
    lanes: 16 bus-ID: 2b:00.1 chip-ID: 10de:10f0 class-ID: 0403
  Device-2: AMD Starship/Matisse HD Audio vendor: Micro-Star MSI driver: 
snd_hda_intel v: kernel
    pcie: speed: 16 GT/s lanes: 16 bus-ID: 2d:00.4 chip-ID: 1022:1487 class-ID: 
0403
  API: ALSA v: k6.8.0-49-generic status: kernel-api
  Server-1: PipeWire v: 1.0.5 status: active with: 1: pipewire-pulse status: 
active
    2: wireplumber status: active
Network:
  Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet vendor: 
Micro-Star MSI
    RTL8111/8168/8411 driver: r8169 v: kernel pcie: speed: 2.5 GT/s lanes: 1 
port: e000
    bus-ID: 04:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp4s0 state: down mac: <filter>
  Device-2: Realtek RTL8125 2.5GbE vendor: Micro-Star MSI driver: r8169 v: 
kernel pcie:
    speed: 5 GT/s lanes: 1 port: d000 bus-ID: 2a:00.0 chip-ID: 10ec:8125 
class-ID: 0200
  IF: enp42s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:
  Local Storage: total: 1.82 TiB used: 750.53 GiB (40.3%)
  ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 970 EVO Plus 1TB size: 931.51 
GiB
    speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter> fw-rev: 3B2QEXM7 temp: 
27.9 C scheme: GPT
  ID-2: /dev/sda vendor: Western Digital model: WD10EZEX-08M2NA0 size: 931.51 
GiB
    speed: 6.0 Gb/s tech: HDD rpm: 7200 serial: <filter> fw-rev: 1A01 scheme: 
MBR
Partition:
  ID-1: / size: 915.53 GiB used: 23.75 GiB (2.6%) fs: ext4 dev: /dev/nvme0n1p2
  ID-2: /boot/efi size: 299.4 MiB used: 7.7 MiB (2.6%) fs: vfat dev: 
/dev/nvme0n1p1
Swap:
  ID-1: swap-1 type: file size: 512 MiB used: 0 KiB (0.0%) priority: -2 file: 
/swapfile
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 10 rev: 2.0 speed: 480 
Mb/s lanes: 1
    chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 1-2:2 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s lanes: 
1 power: 100mA
    chip-ID: 05e3:0608 class-ID: 0900
  Device-1: 1-5:3 info: Logitech Mouse type: mouse driver: hid-generic,usbhid 
interfaces: 1
    rev: 2.0 speed: 1.5 Mb/s lanes: 1 power: 100mA chip-ID: 046d:c077 class-ID: 
0301
  Device-2: 1-6:4 info: Logitech Keyboard K120 type: keyboard,HID driver: 
hid-generic,usbhid
    interfaces: 2 rev: 1.1 speed: 1.5 Mb/s lanes: 1 power: 90mA chip-ID: 
046d:c31c class-ID: 0300
  Device-3: 1-8:5 info: Micro Star MYSTIC LIGHT type: HID driver: 
hid-generic,usbhid
    interfaces: 1 rev: 1.1 speed: 12 Mb/s lanes: 1 power: 500mA chip-ID: 
1462:7c91 class-ID: 0300
    serial: <filter>
  Hub-3: 2-0:1 info: super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s lanes: 1
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-4: 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
  Hub-5: 4-0:1 info: super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s lanes: 1
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 30.1 C mobo: N/A gpu: nvidia temp: 36 C
  Fan Speeds (rpm): N/A
Repos:
  Packages: 2278 pm: dpkg pkgs: 2269 pm: snap pkgs: 9
  No active apt repos in: /etc/apt/sources.list
  Active apt repos in: /etc/apt/sources.list.d/ubuntu.sources
    1: deb http://archive.ubuntu.com/ubuntu noble noble-updates noble-backports 
main universe restricted multiverse
    2: deb http://security.ubuntu.com/ubuntu/ noble-security main universe 
restricted multiverse
Info:
  Memory: total: 32 GiB available: 31.26 GiB used: 1.23 GiB (3.9%)
  Processes: 267 Power: uptime: 8m states: freeze,mem suspend: deep wakeups: 0
    hibernate: disabled Init: systemd v: 255 target: graphical (5) default: 
graphical
  Compilers: gcc: 13.2.0 Shell: Bash (login) v: 5.2.21 running-in: tty 3 inxi: 
3.3.34

** Affects: sddm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
Black screen with backlight just before sddm greeter
https://bugs.launchpad.net/bugs/2089053
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