$ kscreen-doctor -o
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
Output: 1 DP-1
        enabled
        connected
        priority 1
        DisplayPort
        Modes:  0:1920x1080@144*!  1:1920x1080@120  2:1920x1080@120  3:1920x1080@100  4:1920x1080@96  5:1920x1080@72  6:1920x1080@60  7:1920x1080@60  8:1920x1080@60  9:1920x1080@60  10:1920x1080@50  11:1920x1080@50  12:1920x1080@48  13:1680x1050@60  14:1280x1024@75  15:1280x1024@60  16:1440x900@60  17:1280x960@60  18:1280x800@144  19:1152x864@75  20:1280x720@60  21:1280x720@60  22:1280x720@60  23:1280x720@50  24:1440x576@50  25:1440x576@50  26:1024x768@75  27:1024x768@70  28:1024x768@60  29:1440x480@60  30:1440x480@60  31:1440x480@60  32:1440x480@60  33:800x600@75  34:800x600@72  35:800x600@60  36:800x600@56  37:720x576@50  38:720x576@50  39:720x480@60  40:720x480@60  41:720x480@60  42:720x480@60  43:640x480@75  44:640x480@73  45:640x480@67  46:640x480@60  47:640x480@60  48:640x480@60  49:720x400@70  50:1280x1024@60  51:1024x768@60  52:1280x800@60  53:1920x1080@60  54:1600x900@60  55:1368x768@60  56:1280x720@60 
        Geometry: 0,0 1920x1080
        Scale: 1
        Rotation: 1
        Overscan: 0
        Vrr: Automatic
        RgbRange: unknown
        HDR: incapable
        Wide Color Gamut: incapable
        ICC profile: none
Output: 2 DP-3
        disabled
        connected
        priority 0
        DisplayPort
        Modes:  0:640x480@60*! 
        Geometry: 0,0 640x480
        Scale: 1
        Rotation: 1
        Overscan: 0
        Vrr: incapable
        RgbRange: unknown
        HDR: incapable
        Wide Color Gamut: incapable
        ICC profile: none