Graphical Environments & Desktops • Re: External QHD monitor not detected with MacBook Pro mid 2012 (nvidia)

Code:

$ inxi --edid --filterGraphics:  Device-1: Intel 3rd Gen Core processor Graphics vendor: Apple driver: i915    v: kernel arch: Gen-7 process: Intel 22nm built: 2012-13 ports:    active: LVDS-2 empty: VGA-1 bus-ID: 00:02.0 chip-ID: 8086:0166    class-ID: 0300  Device-2: NVIDIA GK107M [GeForce GT 650M Mac Edition] vendor: Apple    driver: nouveau v: kernel non-free: series: 470.xx+    status: legacy-active (EOL~2023/24) arch: Kepler code: GKxxx    process: TSMC 28nm built: 2012-18 pcie: gen: 1 speed: 2.5 GT/s lanes: 8    link-max: gen: 3 speed: 8 GT/s lanes: 16 ports: active: LVDS-1    empty: DP-1,DP-2,DP-3 bus-ID: 01:00.0 chip-ID: 10de:0fd5 class-ID: 0300    temp: 57.0 C  Device-3: Apple FaceTime HD Camera type: USB driver: uvcvideo    bus-ID: 1-1.1:3 chip-ID: 05ac:8509 class-ID: 0e02 serial: <filter>  Display: wayland server: X.org v: 1.21.1.7 with: Xwayland v: 22.1.9    compositor: gnome-shell v: 43.9 driver: gpu: i915,nouveau display-ID: 0  Monitor-1: LVDS-1 model: Apple 0x9ca3 built: 2009 res: 1440x900 dpi: 111    gamma: 1.2 chroma: red: x: 0.639 y: 0.333 green: x: 0.310 y: 0.612 blue:    x: 0.149 y: 0.059 white: x: 0.314 y: 0.329 size: 331x207mm (13.03x8.15")    diag: 390mm (15.4") ratio: 16:10 modes: 1440x900, 1152x864, 1024x768,    800x600, 640x480, 720x400, 640x400, 640x350  EDID-Warnings: 1: parse_edid: unknown flag 1  Monitor-2: LVDS-2 model: Apple 0x9ca3 built: 2009 res: 1440x900 dpi: 111    gamma: 1.2 chroma: red: x: 0.639 y: 0.333 green: x: 0.310 y: 0.612 blue:    x: 0.149 y: 0.059 white: x: 0.314 y: 0.329 size: 331x207mm (13.03x8.15")    diag: 390mm (15.4") ratio: 16:10 modes: 1440x900  EDID-Warnings: 1: parse_edid: unknown flag 1  API: OpenGL v: 4.3 Mesa 22.3.6 renderer: NVE7 direct-render: Yes

Code:

$ sudo get-edid | parse-edidThis is read-edid version 3.0.2. Prepare for some fun.Attempting to use i2c interfaceLooks like no busses have an EDID. Sorry!Attempting to use the classical VBE interfacePerforming real mode VBE callInterrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0^C