Gsync screen of the Alienware M18 R2 is not detected

Graphics / Linux Linux
4

G-Sync compatible is detected by the driver but disabled:
[ 26.274454] nvidia-modeset: WARNING: GPU:0: BOE Technology Group Co., Ltd (DP-0): G-SYNC Compatible: EDID min refresh rate invalid, disabling G-SYNC Compatible.
Don’t really know why, the decoded EDID looks fine:

edid-decode (hex):

00 ff ff ff ff ff ff 00 09 e5 fb 0a 00 00 00 00
1d 20 01 04 a5 27 18 78 03 e5 f5 ae 50 44 b1 24
0e 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 6b 6e 00 a0 a0 40 84 60 30 20
36 00 84 f2 10 00 00 1a 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 fe 00 48
46 31 46 56 80 4e 45 31 38 4e 5a 31 00 00 00 00
00 02 41 0f 9e 00 03 00 00 0f 41 0a 20 20 01 20

70 20 79 02 00 22 00 14 69 dc 0b 85 ff 09 9f 00
2f 00 1f 00 3f 06 83 00 02 00 05 00 25 00 09 69
dc 0b 69 dc 0b 3c a5 80 81 00 13 72 1a 00 00 03
01 3c a5 00 00 53 51 53 51 a5 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 75 90

----------------

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.4
  Vendor & Product Identification:
    Manufacturer: BOE
    Model: 2811
    Made in: week 29 of 2022
  Basic Display Parameters & Features:
    Digital display
    Bits per primary color channel: 8
    DisplayPort interface
    Maximum image size: 39 cm x 24 cm
    Gamma: 2.20
    Supported color formats: RGB 4:4:4
    First detailed timing includes the native pixel format and preferred refresh rate
    Display is continuous frequency
  Color Characteristics:
    Red  : 0.6826, 0.3144
    Green: 0.2666, 0.6923
    Blue : 0.1435, 0.0576
    White: 0.3134, 0.3291
  Established Timings I & II: none
  Standard Timings: none
  Detailed Timing Descriptors:
    DTD 1:  2560x1600   60.001613 Hz   8:5    103.923 kHz    282.670000 MHz (388 mm x 242 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync   6 Vback  123 Vpol N
    Empty Descriptor
    Alphanumeric Data String: 'HF1FV'
    Manufacturer-Specified Display Descriptor (0x00): 00 00 00 02 41 0f 9e 00 03 00 00 0f 41 0a 20 20 '....A.......A.  '
  Extension blocks: 1
Checksum: 0x20

----------------

Block 1, DisplayID Extension Block:
  Version: 2.0
  Extension Count: 0
  Display Product Primary Use Case: None of the listed primary use cases; generic display
  Video Timing Modes Type 7 - Detailed Timings Data Block:
    DTD:  2560x1600  165.000085 Hz  16:10   285.780 kHz    777.322000 MHz (aspect 16:10, no 3D stereo, preferred)
               Hfront   48 Hsync  32 Hback   80 Hpol N
               Vfront    3 Vsync   6 Vback  123 Vpol N
  Dynamic Video Timing Range Limits Data Block:
    Minimum Pixel Clock: 777322 kHz
    Maximum Pixel Clock: 777322 kHz
    Minimum Vertical Refresh Rate: 60 Hz
    Maximum Vertical Refresh Rate: 165 Hz
    Seamless Dynamic Video Timing Support: Yes
  CTA-861 DisplayID Data Block:
  Vendor-Specific Data Block (AMD), OUI 00-00-1A:
    Version: 3.1
    Minimum Refresh Rate: 60 Hz
    Maximum Refresh Rate: 165 Hz
    Flags 1.x: 0x00
    Flags 2.x: 0x00
    Maximum luminance: 83 (301.833 cd/m^2)
    Minimum luminance: 81 (0.305 cd/m^2)
    Unknown: 0x53 0x51
  Checksum: 0x75
Checksum: 0x90
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