gfxCardStatus reports the wrong state for which GPU is active

[minhaz1]

I have a MacBook Pro (15-inch, 2018) with the Radeon 560X. When I connect my external monitors, the dedicated graphics kick on as expected and gfxCardStatus reports this correctly. However when I disconnect my monitors, it still says dedicated when it is actually using the integrated graphics. As you can see below:

I've confirmed that it is indeed the integrated graphics being used by looking at the displays tab in About My Mac, which is how Apple suggests checking which GPU is active: https://support.apple.com/en-us/HT202053

If I exit and re-open gfxCardStatus the state is correct and it will say integrated again:

[codykrieger]

Thanks for the report. Similar to #298 in some respects, in that this is either a race condition between the time we get the “display reconfiguration” callback and when the GPU actually switches, or we're just not getting that callback at all for some reason.

[hughperkins]

I have the same issue. eg, when I change to 'integrated only', it displays as 'discrete only' :P even though, in the screenshot, you can see that it is in fact using the integrated intel gpu.

Cool application by the way :)

[essentialCoder]

@hughperkins Hi, I have the same identical issue. Did you find the cause?

[jensenharris]

I am seeing this issue as well.

[CoryLR]

I'm having an issue where gfxCardStatus is reporting integrated graphics is being used when I've confirmed my system is using discreet graphics.

The image below shows the "i" icon while the Activity Monitor reports consistent usage from both graphics cards (bottom is the dedicated graphics card). The "i" icon remained through the entirety of when this graph was recording.

[codykrieger]

@UIDCLR When your system is in that state, can you capture the output of system_profiler SPDisplaysDataType and paste it here?

[Shnub]

I'm also often experiencing an "i" in the menu bar when in fact the discrete GPU is being used, and vice versa. It doesn't seem to be predictable though, sometimes I disconnect an external monitor from the laptop, the GPU switches to i but the app remains at d, yet sometimes it updates properly.

In those cases when it doesn't update properly, the menu bar icon and "GPU: …" line flatly contradict the dependencies shown:

The output of system_profiler SPDisplaysDataType in this state is always the same:

Graphics/Displays:

    Intel HD Graphics 630:

      Chipset Model: Intel HD Graphics 630
      Type: GPU
      Bus: Built-In
      VRAM (Dynamic, Max): 1536 MB
      Vendor: Intel
      Device ID: 0x591b
      Revision ID: 0x0004
      Automatic Graphics Switching: Supported
      gMux Version: 4.0.29 [3.2.8]
      Metal: Supported, feature set macOS GPUFamily2 v1

    Radeon Pro 560:

      Chipset Model: Radeon Pro 560
      Type: GPU
      Bus: PCIe
      PCIe Lane Width: x8
      VRAM (Total): 4 GB
      Vendor: AMD (0x1002)
      Device ID: 0x67ef
      Revision ID: 0x00c0
      ROM Revision: 113-C980AJ-927
      VBIOS Version: 113-C9801AU-A02
      EFI Driver Version: 01.A0.927
      Automatic Graphics Switching: Supported
      gMux Version: 4.0.29 [3.2.8]
      Metal: Supported, feature set macOS GPUFamily2 v1
      Displays:
        Color LCD:
          Display Type: Built-In Retina LCD
          Resolution: 2880 x 1800 Retina
          Framebuffer Depth: 24-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Rotation: Supported
          Automatically Adjust Brightness: No

Relaunching the app then always produces correct results.

If the root cause of this issue can't be tackled, maybe a workaround might be to re-check the active GPU when the dependencies list has been updated? I'm not sure, but that seems to be correct at least most (or even all?) of the time.

(macOS 10.14.6, 2017 MBP, gfxCardStatus v2.5)