Decoding the 2014-12-07 Hackintosh Screenshot: GPU Diagnostics in Yosemite

The filename screen shot 2014 12 07 at 12 07 00 pm.png is a timestamped diagnostic artifact common among Hackintosh builders during the OS X Yosemite era. The date — December 7, 2014 — places it roughly two months after the public release of Yosemite (10.10) and in the midst of the transition from NVIDIA’s Kepler (GTX 600/700) to Maxwell (GTX 750/900) architectures. For a builder troubleshooting GPU acceleration, that screenshot is worth more than a thousand forum posts.

Most likely, this image captures the About This Mac window opened to the Displays tab or the Graphics/Displays section of the System Information app. The 12:07 PM timestamp suggests the builder had just booted the system, logged in, and immediately took a snapshot to verify whether the graphics card had been recognised correctly before attempting any further work. Understanding what that screenshot should — and should not — contain is the key to diagnosing a legacy Hackintosh GPU installation.

What the Screenshot Typically Reveals

A properly configured GPU in Yosemite will show explicit vendor and model names under the Graphics/Displays section. For example:

• NVIDIA GeForce GTX 660 – 2048 MB, PCIe, NVIDIA Chip Model: NVIDIA GeForce GTX 660
• Intel HD Graphics 4600 – 1536 MB, built-in, VRAM (dynamic) or dedicated
• AMD Radeon R9 280X – 3072 MB, PCIe, AMD Radeon HD 7900 Series

If the screenshot shows a generic label like “NVIDIA Chip Model” or “Display Controller” without a device name, the system is running without full hardware acceleration — or the graphics kexts are not loaded correctly. The 2014–12–07 snapshot likely belongs to one of these three scenarios:

1. Full acceleration – QE/CI enabled, correct model name, and the display resolution matches the native monitor.
2. No acceleration – The OS falls back to the VESA framebuffer driver, showing a generic “Display” entry and a low resolution (e.g., 1024×768).
3. Partial acceleration – The GPU is recognised by macOS but lacks OpenGL support, often indicated by a missing “VRAM” line or a skewed resolution.

Reading the Diagnostic Clues

Vendor and Device ID

In the screenshot, the builder would have clicked the System Report button to see the raw PCI device ID. For a GTX 660, the device ID is 0x11c0 (Kepler). For a Maxwell GTX 970, it is 0x13c2 — which Yosemite does not support natively. If the screenshot shows a device ID that does not match any known macOS-compatible chip, the builder must either inject a fake ID via Clover or replace the card.

Kext Load Status

Another powerful diagnostic hidden in the 2014-12-07 screenshot is the kext load log obtained from kextstat | grep -i nvidia (or AMD). A healthy system will show entries like:

• com.apple.NVDAResman
• com.apple.NVDAGK100Hal
• com.apple.GeForce

If the screenshot includes the Terminal output alongside the System Information window, it would be a goldmine. Typically, a missing NVDAGK100Hal means the kext is not loaded, likely because the framebuffer patching is incorrect or the board-id injection is wrong.

Common GPU Configurations in Yosemite (Late 2014)

In December 2014, the most reliable Hackintosh GPUs were:

If the 2014-12-07 screenshot shows a GTX 750 Ti with a native driver, the builder would see a resolution drop and no acceleration. The correct fix at that time was to install the NVIDIA Web Driver (346.xx series) and add nvda_drv=1 to the boot arguments. A screenshot taken after the web driver installation would show the “NVIDIA GeForce GTX 750 Ti” name correctly.

Framebuffer and ACPI Considerations

Another layer of diagnostics visible in the screenshot might be the display resolution and the EDID (Extended Display Identification Data). A working Hackintosh with a properly patched framebuffer will show the correct native resolution (e.g., 1920×1080) and, under the Graphics/Displays section, a line for “Display Type: LCD” or “External Monitor”. If the resolution is stuck at 1080p but the monitor is 1440p, the framebuffer’s connector info is mismatched.

For legacy Intel HD Graphics builds, the 2014-12-07 screenshot could be used to diagnose a “2DFKK” framebuffer issue — a common problem with Ivy Bridge and Haswell iGPUs that causes the system to boot with only 7 MB of VRAM. The How to Fix the 2DFKK Framebuffer on Legacy Intel Hackintosh Builds guide details the patch needed to restore full 1024 MB or 1536 MB allocation. If the screenshot shows a VRAM value far below what the hardware should have, that is the first place to look.

Applying the Diagnosis to the 2014-12-07 Screenshot

Without seeing the actual image, we can make an educated guess based on the date. December 2014 was the peak of the Kepler-nVidia dominance in the Hackintosh community. Many builders were using the GTX 660 or GTX 770 because they worked out of the box with Yosemite, requiring no web drivers. The screenshot likely shows a successful installation — a clean “NVIDIA GeForce GTX 660” with 2048 MB and a 1920×1080 display. The builder would have taken it to confirm that the GPU was recognised before moving on to audio or network configuration.

However, if the screenshot shows a generic “Display” or “NVIDIA Chip Model”, the builder would have had to troubleshoot. The first step would be to check the EMS REV (EFI version) and ensure that the GPU was not a Maxwell card (which requires the web driver). For a Kepler card, the fix often involved adding the correct device-id to the Clover config.plist under Graphics → Inject → NVIDIA. A thorough diagnostic approach is described in the Reading the 2014-12-13 Screenshot: A Hackintosh GPU Diagnostic Classic article, which covers a similar snapshot taken just six days later.

Risks and Backup Strategy

Before making any changes based on a screenshot, always back up the current EFI partition and the macOS drive. A misconfigured framebuffer patch can cause a black screen on boot, requiring a bootable USB stick to recover. Keep a copy of the working config.plist and the kexts that were loaded at the time of the screenshot — those are your baseline. If the 2014-12-07 screenshot shows a working system, save the entire EFI folder as a restore point.

For users who plan to replicate the exact configuration from that era, consider using the same version of Clover (e.g., 2953 or 2980) and the same kext versions (FakeSMC 6.17, IntelMausiEthernet 2.2) that were current in December 2014. Modern bootloaders (OpenCore) may break legacy compatibility for Yosemite builds.

The 2014-12-07 screenshot is more than a time capsule — it is a practical diagnostic tool. For example, if the screenshot shows a GTX 660 with 2048 MB and a 1920×1080 display, you can be confident the GPU is working natively. But if you see a generic “Display” at 1024×768, you’re dealing with a VESA fallback — time to check your Clover injection or web driver installation. That’s the practical value of a single timestamped screenshot.