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4

where does gnome-display-properties save the different configurations?

rated 0 times [ 4] [ 0] / answers: 1 / hits: 11249 / 1 Year ago, sun, february 12, 2023, 1:35:08

I use gnome-display-properties to configure the external screens that I attach to my laptop at home and in the office. gnome-display-properties cleverly remembers which screen is which, and automatically sets the display up when the screen is plugged.

For example, in gnome-display-properties, the monitor shows as "Monitor: Samsung Electric Company 24''", I wonder where is this info pulled from?

Where is this information saved?

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rryble

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answered 1 Year ago ravturtl · Accepted Answer

The information is coming from the monitor's EDID. To check, you can install the package read-edid and run

sudo get-edid | parse-edid

That should output some info including the monitor section we previously had in our xorg.conf files, e.g.:

Section "Monitor"

    # Block type: 2:0 3:ff

    # Block type: 2:0 3:fc

    Identifier "DELL U2311H"

    VendorName "DEL"

    ModelName "DELL U2311H"

    # Block type: 2:0 3:ff

    # Block type: 2:0 3:fc

    # Block type: 2:0 3:fd

    HorizSync 30-83

    VertRefresh 56-76

    # Max dot clock (video bandwidth) 170 MHz

    # DPMS capabilities: Active off:yes  Suspend:yes  Standby:yes



    Mode    "1920x1080" # vfreq 60.000Hz, hfreq 67.500kHz

        DotClock    148.500000

        HTimings    1920 2008 2052 2200

        VTimings    1080 1084 1089 1125

        Flags   "+HSync" "+VSync"

    EndMode

    # Block type: 2:0 3:ff

    # Block type: 2:0 3:fc

    # Block type: 2:0 3:fd

EndSection

Note the three letter VendorName.