Sometimes black screen on booting

Hello everybody,

I am a beginner in Linux and my problem is that sometimes I got a black screen on booting. I could enter TTY2 and use startx or I can reboot often till I reach the login screen. Yesterday I updated to kernel 5.10 and deleted the old nvidia-utils and installed the new ones. That problem didn’t show up on kernel 5.9 before.

System:
  Kernel: 5.10.2-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64 
  root=UUID=575a1c43-ce82-4a93-a9b5-520f736b0079 rw quiet apparmor=1 
  security=apparmor resume=UUID=d0c52005-1b96-44fc-9c61-dba6e6e98420 
  udev.log_priority=3 acpi_backlight=video 
  Desktop: KDE Plasma 5.20.4 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 
  dm: SDDM Distro: Manjaro Linux 
Machine:
  Type: Laptop System: Schenker product: XMG CORE 17(M20, RTX 2060) 
  v: Standard serial: <filter> 
  Mobo: Schenker model: GK7NxxR M20 v: Standard serial: <filter> 
  UEFI: American Megatrends v: N.1.16.A01 date: 09/02/2020 
Battery:
  ID-1: BAT0 charge: 61.1 Wh condition: 62.3/62.3 Wh (100%) volts: 17.5/15.2 
  model: standard type: Li-ion serial: <filter> status: Charging 
CPU:
  Info: 8-Core model: AMD Ryzen 7 4800H with Radeon Graphics bits: 64 
  type: MT MCP arch: Zen 2 family: 17 (23) model-id: 60 (96) stepping: 1 
  microcode: 8600103 L2 cache: 4 MiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm 
  bogomips: 92657 
  Speed: 1394 MHz min/max: 1400/2900 MHz boost: enabled Core speeds (MHz): 
  1: 1394 2: 1397 3: 1397 4: 1397 5: 1397 6: 1395 7: 1397 8: 1397 9: 1397 
  10: 1396 11: 1397 12: 1396 13: 1397 14: 1393 15: 1398 16: 1397 
  Vulnerabilities: Type: itlb_multihit status: Not affected 
  Type: l1tf status: Not affected 
  Type: mds status: Not affected 
  Type: meltdown 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: Full AMD retpoline, IBPB: conditional, IBRS_FW, 
  STIBP: conditional, RSB filling 
  Type: srbds status: Not affected 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: NVIDIA TU106M [GeForce RTX 2060 Mobile] 
  vendor: Tongfang Hongkong Limited driver: nvidia v: 455.45.01 
  alternate: nouveau,nvidia_drm bus ID: 01:00.0 chip ID: 10de:1f15 
  Device-2: AMD Renoir vendor: Tongfang Hongkong Limited driver: amdgpu 
  v: kernel bus ID: 05:00.0 chip ID: 1002:1636 
  Device-3: Chicony HD Webcam type: USB driver: uvcvideo bus ID: 3-4:4 
  chip ID: 04f2:b641 
  Display: x11 server: X.Org 1.20.10 compositor: kwin_x11 
  driver: amdgpu,ati,nvidia unloaded: modesetting,nouveau 
  alternate: fbdev,nv,vesa display ID: :0 screens: 1 
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") 
  s-diag: 582mm (22.9") 
  Monitor-1: eDP res: 1920x1080 hz: 144 dpi: 128 size: 382x215mm (15.0x8.5") 
  diag: 438mm (17.3") 
  OpenGL: renderer: AMD RENOIR (DRM 3.40.0 5.10.2-2-MANJARO LLVM 11.0.0) 
  v: 4.6 Mesa 20.3.1 direct render: Yes 
Audio:
  Device-1: AMD Family 17h HD Audio vendor: Tongfang Hongkong Limited 
  driver: snd_hda_intel v: kernel bus ID: 05:00.6 chip ID: 1022:15e3 
  Sound Server: ALSA v: k5.10.2-2-MANJARO 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Tongfang Hongkong Limited driver: r8169 v: kernel port: e000 
  bus ID: 02:00.0 chip ID: 10ec:8168 
  IF: enp2s0 state: down mac: <filter> 
  Device-2: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel port: e000 
  bus ID: 03:00.0 chip ID: 8086:2723 
  IF: wlo1 state: up mac: <filter> 
Drives:
  Local Storage: total: 931.51 GiB used: 47.15 GiB (5.1%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung 
  model: SSD 970 EVO Plus 1TB size: 931.51 GiB block size: physical: 512 B 
  logical: 512 B speed: 31.6 Gb/s lanes: 4 serial: <filter> rev: 2B2QEXM7 
  temp: 34.9 C 
Partition:
  ID-1: / raw size: 897.28 GiB size: 882.2 GiB (98.32%) used: 47.14 GiB (5.3%) 
  fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2 
  ID-2: /boot/efi raw size: 300 MiB size: 299.4 MiB (99.80%) 
  used: 312 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 
Swap:
  Kernel: swappiness: 60 (default) cache pressure: 100 (default) 
  ID-1: swap-1 type: partition size: 33.94 GiB used: 0 KiB (0.0%) priority: -2 
  dev: /dev/nvme0n1p3 maj-min: 259:3 
Sensors:
  System Temperatures: cpu: 48.4 C mobo: N/A gpu: amdgpu temp: 39.0 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 354 Uptime: 3m wakeups: 2 Memory: 30.85 GiB used: 2.03 GiB (6.6%) 
  Init: systemd v: 247 Compilers: gcc: N/A Packages: 1314 pacman: 1300 
  lib: 402 flatpak: 9 snap: 5 Shell: Bash v: 5.1.0 running in: konsole 
  inxi: 3.2.01 

Thanks for your help