macos - 显示连接的显示器/显示器/分辨率的终端命令？

Question

有没有办法通过 OS X 中的终端获取有关连接的显示器和显示器及其分辨率的信息？

我有一些安装在多台显示器上运行，有时如果没有连接显示器，GFLW 窗口似乎无法打开 - 我想检查显示器是否正确连接，并可能将其转储到日志文件，但我还没有找到一种程序化的方式来做到这一点，而无需深入研究 Obj-C/Cocoa

Answer 1

您可以使用 system_profiler SPDisplaysDataType 或 defaults read /Library/Preferences/com.apple.windowserver.plist :

$ system_profiler SPDisplaysDataType
Graphics/Displays:

    NVIDIA GeForce GT 640M:

      Chipset Model: NVIDIA GeForce GT 640M
      Type: GPU
      Bus: PCIe
      PCIe Lane Width: x16
      VRAM (Total): 512 MB
      Vendor: NVIDIA (0x10de)
      Device ID: 0x0fd8
      Revision ID: 0x00a2
      ROM Revision: 3707
      Displays:
        iMac:
          Display Type: LCD
          Resolution: 1920 x 1080
          Pixel Depth: 32-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Built-In: Yes
          Connection Type: DisplayPort
$ defaults read /Library/Preferences/com.apple.windowserver.plist
{
    DisplayResolutionEnabled = 1;
    DisplaySets =     (
                (
                        {
                Active = 1;
                Depth = 4;
                DisplayID = 69731456;
                DisplayProductID = 40978;
                DisplaySerialNumber = 0;
                DisplayVendorID = 1552;
                Height = 1080;
                IODisplayLocation = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/P0P2@1/IOPCI2PCIBridge/GFX0@0/NVDA,Display-A@0/NVDA";
                IOFlags = 7;
                LimitsHeight = 1080;
                LimitsOriginX = 0;
                LimitsOriginY = 0;
                LimitsWidth = 1920;
                MirrorID = 0;
                Mirrored = 0;
                Mode =                 {
                    BitsPerPixel = 32;
                    BitsPerSample = 8;
                    DepthFormat = 4;
                    Height = 1080;
                    IODisplayModeID = "-2147479552";
                    IOFlags = 7;
                    Mode = 1;
                    PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
                    RefreshRate = 0;
                    SamplesPerPixel = 3;
                    UsableForDesktopGUI = 1;
                    Width = 1920;
                    kCGDisplayBytesPerRow = 7680;
                    kCGDisplayHorizontalResolution = 103;
                    kCGDisplayModeIsInterlaced = 0;
                    kCGDisplayModeIsSafeForHardware = 1;
                    kCGDisplayModeIsStretched = 0;
                    kCGDisplayModeIsTelevisionOutput = 0;
                    kCGDisplayModeIsUnavailable = 0;
                    kCGDisplayModeSuitableForUI = 1;
                    kCGDisplayPixelsHigh = 1080;
                    kCGDisplayPixelsWide = 1920;
                    kCGDisplayResolution = 1;
                    kCGDisplayVerticalResolution = 103;
                };
                OriginX = 0;
                OriginY = 0;
                PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
                Resolution = 1;
                Unit = 0;
                UnmirroredHeight = 1080;
                UnmirroredLimitsHeight = 1080;
                UnmirroredLimitsOriginX = 0;
                UnmirroredLimitsOriginY = 0;
                UnmirroredLimitsWidth = 1920;
                UnmirroredMode =                 {
                    BitsPerPixel = 32;
                    BitsPerSample = 8;
                    DepthFormat = 4;
                    Height = 1080;
                    IODisplayModeID = "-2147479552";
                    IOFlags = 7;
                    Mode = 1;
                    PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
                    RefreshRate = 0;
                    SamplesPerPixel = 3;
                    UsableForDesktopGUI = 1;
                    Width = 1920;
                    kCGDisplayBytesPerRow = 7680;
                    kCGDisplayHorizontalResolution = 103;
                    kCGDisplayModeIsInterlaced = 0;
                    kCGDisplayModeIsSafeForHardware = 1;
                    kCGDisplayModeIsStretched = 0;
                    kCGDisplayModeIsTelevisionOutput = 0;
                    kCGDisplayModeIsUnavailable = 0;
                    kCGDisplayModeSuitableForUI = 1;
                    kCGDisplayPixelsHigh = 1080;
                    kCGDisplayPixelsWide = 1920;
                    kCGDisplayResolution = 1;
                    kCGDisplayVerticalResolution = 103;
                };
                UnmirroredOriginX = 0;
                UnmirroredOriginY = 0;
                UnmirroredResolution = 1;
                UnmirroredWidth = 1920;
                Width = 1920;
            }
        )
    );
    ForceOldStyleMemoryManagement = 0;
}