How i can force my monitor to 10 bit color?

Desktop
1

Hello. Nearby, i switched to Gnome from KDE Plasma, and i want to force my monitor to 10 bit color, because it uses 8 bit pallete. Theres output from drm_info about my monitor:

└───Planes
    ├───Plane 0
    │   ├───Object ID: 50
    │   ├───CRTCs: {0}
    │   ├───Legacy info
    │   │   ├───FB ID: 111
    │   │   │   ├───Object ID: 111
    │   │   │   ├───Size: 2560×1440
    │   │   │   ├───Format: XRGB8888 (0x34325258)
    │   │   │   ├───Modifier: NVIDIA_BLOCK_LINEAR_2D(h=4, k=254, g=0, s=1, c=0) (0x03000000004fe014)
    │   │   │   └───Planes:
    │   │   │       └───Plane 0: offset = 0, pitch = 10240 bytes
    │   │   └───Formats:
    │   │       ├───ARGB1555 (0x35315241)
    │   │       ├───XRGB1555 (0x35315258)
    │   │       ├───RGB565 (0x36314752)
    │   │       ├───ARGB8888 (0x34325241)
    │   │       ├───XRGB8888 (0x34325258)
    │   │       ├───ABGR2101010 (0x30334241)
    │   │       ├───XBGR2101010 (0x30334258)
    │   │       ├───ABGR8888 (0x34324241)
    │   │       ├───XBGR8888 (0x34324258)
    │   │       ├───ABGR16161616F (0x48344241)
    │   │       └───XBGR16161616F (0x48344258)

My monitor and videocard supports 10 bit color(GTX 1080 TI(driver nvidia-dkms 575.64.05), and AOC Q27G4X(which 8bit+frc)). Monitor connected with displayport cable, but seems as nvidia driver doesent recognize my monitor as 10 bit supported. In KDE situation is same. How can i force it to 10 bit?

I use Arch with linux-zen(6.15.9-zen1-1-zen).

2

I found a solve. My monitor forced to 10 bit, when i switched to x11 and added an 10 bit option to x11 config. But theres still problem: 10 bit works only on specific apps as a photo viewers etc.

3

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