macOS 27 just fixed the most annoying problem for third-party HDR displays
9to5mac.com Oct 5, 2026

macOS 27 just fixed the most annoying problem for third-party HDR displays

AI-summarised brief · reviewed before publication

Apple’s macOS 27 Golden Gate resolves a long‑standing issue with third‑party HDR displays. In macOS 26 Tahoe, users could enable HDR only at 1920 × 1080, forcing a trade‑off between resolution and HDR. The new release allows HDR to be activated while selecting scaled resolutions such as 2560 × 1440, improving image quality on displays like Dell’s 32‑inch UltraSharp U3226Q. The fix is native, requiring no third‑party software, though some hardware models may still lack full support.

💡 Why It Matters

  • · The update unlocks true HDR performance for a growing market of external monitors, giving professionals and enthusiasts a practical, software‑only solution to enhance visual fidelity on non‑Apple screens.