Screen flickering when in grub

Please, help me to solve the issue as I moving from Windows where I worked almost 30 years and have no experience in Linux at all.

I installed Manjaro on the Asus Zephyrus M16 with the external display connected by HDMI and bumped into the issue with the screen flickering when I enter the password to luks on the very beginning.
The flickering is only visible when the external monitor is turned on.
When the green menu is shown the flickering stops.
I’ve read lots of things, and tried to apply different kernel options :
idle=halt
nomodeset
i915.enable_psr=0
I updated grub every time I changed these options, and nothing helped - every time I enter the password the screen flickers on and off

Another thing - there was the same issue in the BIOS, and I managed to solve it by using the shielded HDMI cable + enabling ErP option.
So, the reliable wourkaround is to switch off the external monitor which is a bit annoying.
And the last observation - on USB-C cable there were also no flickering, but I do need a free usb-c.

inxi --full --verbosity=7 --filter --no-host                                                                                                 
System:
  Kernel: 5.15.85-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    Desktop: KDE Plasma v: 5.26.4 tk: Qt v: 5.15.7 wm: kwin_x11 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: ASUSTeK product: ROG Zephyrus M16 GU603HE_GU603HE
    v: 1.0 serial: <filter>
  Mobo: ASUSTeK model: GU603HE v: 1.0 serial: <filter> UEFI: American
    Megatrends LLC. v: GU603HE.315 date: 12/09/2021
Battery:
  ID-1: BAT0 charge: 84.8 Wh (100.0%) condition: 84.8/90.0 Wh (94.2%)
    volts: 15.9 min: 15.9 model: ASUSTeK ASUS Battery type: Li-ion serial: N/A
    status: not charging cycles: 17
Memory:
  RAM: total: 15.31 GiB used: 2.6 GiB (17.0%)
  Array-1: capacity: 64 GiB slots: 4 EC: None max-module-size: 16 GiB
    note: est.
  Device-1: Controller0-ChannelA-DIMM1 type: no module installed
  Device-2: Controller1-ChannelA-DIMM0 type: no module installed
  Device-3: Controller1-ChannelA-DIMM1 type: no module installed
  Device-4: Controller0-ChannelA type: DDR4 detail: synchronous size: 16 GiB
    speed: 3200 MT/s volts: 1.2 width (bits): data: 64 total: 64
    manufacturer: SK Hynix part-no: HMAB2GS6AMR6N-XN serial: N/A
CPU:
  Info: 8-core model: 11th Gen Intel Core i7-11800H bits: 64 type: MT MCP
    smt: enabled arch: Tiger Lake rev: 1 cache: L1: 640 KiB L2: 10 MiB
    L3: 24 MiB
  Speed (MHz): avg: 1070 high: 1787 min/max: 800/4600 volts: 0.7 V
    ext-clock: 100 MHz cores: 1: 969 2: 1006 3: 1038 4: 800 5: 1787 6: 1315
    7: 1142 8: 1463 9: 1105 10: 1306 11: 917 12: 798 13: 794 14: 823 15: 801
    16: 1069 bogomips: 73744
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 avx512_bitalg avx512_vbmi2
    avx512_vnni avx512_vp2intersect avx512_vpopcntdq avx512bw avx512cd
    avx512dq avx512f avx512ifma avx512vbmi avx512vl bmi1 bmi2 bts cat_l2
    cdp_l2 clflush clflushopt clwb cmov constant_tsc cpuid cpuid_fault cx16
    cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms est f16c flexpriority
    flush_l1d fma fpu fsgsbase fsrm fxsr gfni ht hwp hwp_act_window hwp_epp
    hwp_notify hwp_pkg_req ibpb ibrs ibrs_enhanced ida intel_pt invpcid
    invpcid_single lahf_lm lm mca mce md_clear mmx monitor movbe movdir64b
    movdiri msr mtrr nonstop_tsc nopl nx ospke pae pat pbe pcid pclmulqdq
    pdcm pdpe1gb pebs pge pku pln pni popcnt pse pse36 pts rdpid rdrand
    rdseed rdt_a rdtscp rep_good sdbg sep sha_ni smap smep split_lock_detect
    ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc
    tsc_adjust tsc_deadline_timer tsc_known_freq umip vaes vme vmx vnmi
    vpclmulqdq vpid x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology
    xtpr
Graphics:
  Device-1: Intel TigerLake-H GT1 [UHD Graphics] vendor: ASUSTeK driver: i915
    v: kernel arch: Gen-12.1 ports: active: HDMI-A-1,eDP-1 empty: DP-1,DP-2
    bus-ID: 0000:00:02.0 chip-ID: 8086:9a60 class-ID: 0300
  Device-2: NVIDIA GA107M [GeForce RTX 3050 Ti Mobile] vendor: ASUSTeK
    driver: N/A arch: Ampere bus-ID: 0000:01:00.0 chip-ID: 10de:25a0
    class-ID: 0300
  Device-3: IMC Networks USB2.0 HD UVC WebCam type: USB driver: uvcvideo
    bus-ID: 3-2:2 chip-ID: 13d3:5458 class-ID: fe01 serial: <filter>
  Display: x11 server: X.Org v: 21.1.6 compositor: kwin_x11 driver: X:
    loaded: modesetting alternate: fbdev,vesa dri: iris gpu: i915 display-ID: :0
    screens: 1
  Screen-1: 0 s-res: 2561x3040 s-dpi: 96 s-size: 677x803mm (26.65x31.61")
    s-diag: 1050mm (41.35")
  Monitor-1: HDMI-A-1 mapped: HDMI-1 pos: top-left model: HP Z27q G3
    serial: <filter> res: 2560x1440 hz: 60 dpi: 109
    size: 597x336mm (23.5x13.23") diag: 685mm (27") modes: max: 2560x1440
    min: 720x400
  Monitor-2: eDP-1 pos: primary,bottom-r model: BOE Display 0x0a0b
    res: 2560x1600 hz: 165 dpi: 189 size: 344x215mm (13.54x8.46")
    diag: 406mm (16") modes: 2560x1600
  API: OpenGL v: 4.6 Mesa 22.3.1 renderer: Mesa Intel UHD Graphics (TGL GT1)
    direct render: Yes
Audio:
  Device-1: Intel Tiger Lake-H HD Audio vendor: ASUSTeK driver: snd_hda_intel
    v: kernel bus-ID: 0000:00:1f.3 chip-ID: 8086:43c8 class-ID: 0403
  Device-2: NVIDIA vendor: ASUSTeK driver: snd_hda_intel v: kernel
    bus-ID: 0000:01:00.1 chip-ID: 10de:2291 class-ID: 0403
  Sound API: ALSA v: k5.15.85-1-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 vendor: ASUSTeK driver: r8169 v: kernel port: 3000
    bus-ID: 0000:2d:00.0 chip-ID: 10ec:8162 class-ID: 0200
  IF: eno2 state: down mac: <filter>
  Device-2: MEDIATEK MT7921 802.11ax PCI Express Wireless Network Adapter
    vendor: AzureWave driver: mt7921e v: kernel bus-ID: 0000:2f:00.0
    chip-ID: 14c3:7961 class-ID: 0280
  IF: wlo1 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  IF-ID-1: docker0 state: down mac: <filter>
  IP v4: <filter> scope: global broadcast: <filter>
  WAN IP: <filter>
Bluetooth:
  Device-1: IMC Networks Wireless_Device type: USB driver: btusb v: 0.8
    bus-ID: 3-14:6 chip-ID: 13d3:3563 class-ID: e001 serial: <filter>
  Report: rfkill ID: hci0 rfk-id: 0 state: down bt-service: disabled
    rfk-block: hardware: no software: no address: see --recommends
Logical:
  Message: No logical block device data found.
  Device-1: luks-61e919b4-080d-471c-b3ca-f8054adedf01 type: LUKS dm: dm-0
    size: 488.83 GiB
  Components: p-1: nvme0n1p2
RAID:
  Hardware-1: Intel Volume Management Device NVMe RAID Controller driver: vmd
    v: 0.6 port: N/A bus-ID: 0000:00:0e.0 chip-ID: 8086:9a0b rev: class-ID: 0104
Drives:
  Local Storage: total: 1.84 TiB used: 52.93 GiB (2.8%)
  ID-1: /dev/nvme0n1 vendor: Kingston model: SFYRS1000G size: 931.51 GiB
    speed: 63.2 Gb/s lanes: 4 type: SSD serial: <filter> rev: EIFK31.6
    temp: 27.9 C scheme: GPT
  ID-2: /dev/nvme1n1 vendor: Intel model: SSDPEKNU010TZ size: 953.87 GiB
    speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter> rev: 002C temp: 44.9 C
    scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / size: 488.83 GiB used: 52.93 GiB (10.8%) fs: btrfs dev: /dev/dm-0
    mapped: luks-61e919b4-080d-471c-b3ca-f8054adedf01 label: N/A
    uuid: c4bd9c03-64ce-423a-af12-0d9cfef90634
  ID-2: /boot/efi size: 299.4 MiB used: 400 KiB (0.1%) fs: vfat
    dev: /dev/nvme0n1p1 label: NO_LABEL uuid: 3CA2-869D
  ID-3: /home size: 488.83 GiB used: 52.93 GiB (10.8%) fs: btrfs
    dev: /dev/dm-0 mapped: luks-61e919b4-080d-471c-b3ca-f8054adedf01 label: N/A
    uuid: c4bd9c03-64ce-423a-af12-0d9cfef90634
  ID-4: /swap size: 488.83 GiB used: 52.93 GiB (10.8%) fs: btrfs
    dev: /dev/dm-0 mapped: luks-61e919b4-080d-471c-b3ca-f8054adedf01 label: N/A
    uuid: c4bd9c03-64ce-423a-af12-0d9cfef90634
  ID-5: /var/cache size: 488.83 GiB used: 52.93 GiB (10.8%) fs: btrfs
    dev: /dev/dm-0 mapped: luks-61e919b4-080d-471c-b3ca-f8054adedf01 label: N/A
    uuid: c4bd9c03-64ce-423a-af12-0d9cfef90634
  ID-6: /var/log size: 488.83 GiB used: 52.93 GiB (10.8%) fs: btrfs
    dev: /dev/dm-0 mapped: luks-61e919b4-080d-471c-b3ca-f8054adedf01 label: N/A
    uuid: c4bd9c03-64ce-423a-af12-0d9cfef90634
Swap:
  ID-1: swap-1 type: file size: 512 MiB used: 0 KiB (0.0%) priority: -2
    file: /swap/swapfile
Unmounted:
  ID-1: /dev/nvme0n1p3 size: 442.38 GiB fs: N/A label: N/A uuid: N/A
  ID-2: /dev/nvme1n1p1 size: 260 MiB fs: vfat label: SYSTEM uuid: 4C80-E57C
  ID-3: /dev/nvme1n1p10 size: 200 MiB fs: vfat label: MYASUS uuid: 2412-4252
  ID-4: /dev/nvme1n1p2 size: 16 MiB fs: N/A label: N/A uuid: N/A
  ID-5: /dev/nvme1n1p3 size: 295.86 GiB fs: bitlocker label: N/A uuid: N/A
  ID-6: /dev/nvme1n1p4 size: 97.66 GiB fs: bitlocker label: N/A uuid: N/A
  ID-7: /dev/nvme1n1p5 size: 97.66 GiB fs: bitlocker label: N/A uuid: N/A
  ID-8: /dev/nvme1n1p6 size: 97.66 GiB fs: bitlocker label: N/A uuid: N/A
  ID-9: /dev/nvme1n1p7 size: 341.8 GiB fs: bitlocker label: N/A uuid: N/A
  ID-10: /dev/nvme1n1p8 size: 800 MiB fs: ntfs label: RECOVERY
    uuid: 3480FBC280FB889E
  ID-11: /dev/nvme1n1p9 size: 22 GiB fs: ntfs label: RESTORE
    uuid: 081211B61211A9A8
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 1 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 2-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-3: 3-0:1 info: Hi-speed hub with single TT ports: 16 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 3-2:2 info: IMC Networks USB2.0 HD UVC WebCam type: Video
    driver: uvcvideo interfaces: 3 rev: 2.0 speed: 480 Mb/s power: 500mA
    chip-ID: 13d3:5458 class-ID: fe01 serial: <filter>
  Device-2: 3-4:3 info: Logitech G102/G203 LIGHTSYNC Gaming Mouse
    type: Mouse,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
    speed: 12 Mb/s power: 300mA chip-ID: 046d:c092 class-ID: 0300
    serial: <filter>
  Device-3: 3-9:4 info: Shenzhen Goodix FingerPrint type: <vendor specific>
    driver: N/A interfaces: 1 rev: 2.0 speed: 12 Mb/s power: 100mA
    chip-ID: 27c6:521d class-ID: ff00
  Device-4: 3-10:5 info: ASUSTek N-KEY Device type: Keyboard
    driver: asus,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s power: 100mA
    chip-ID: 0b05:19b6 class-ID: 0301
  Device-5: 3-14:6 info: IMC Networks Wireless_Device type: Bluetooth
    driver: btusb interfaces: 3 rev: 2.1 speed: 480 Mb/s power: 100mA
    chip-ID: 13d3:3563 class-ID: e001 serial: <filter>
  Hub-4: 4-0:1 info: Super-speed hub ports: 8 rev: 3.1 speed: 20 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-5: 5-0:1 info: Hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-6: 6-0:1 info: Super-speed hub ports: 2 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 54.0 C mobo: N/A
  Fan Speeds (RPM): cpu: 2800
Info:
  Processes: 349 Uptime: 30m wakeups: 5 Init: systemd v: 252
  default: graphical Compilers: gcc: 12.2.0 clang: 14.0.6 Packages: 1292
  pm: pacman pkgs: 1283 pm: flatpak pkgs: 9 Shell: Zsh (sudo) v: 5.9
  default: Bash v: 5.1.16 running-in: konsole inxi: 3.3.24