LeCoqRoti
Morning setup: UltraBright and a quick preset
UltraBright kicks in the moment direct sun hits the desk — it pushes the MacBook Pro panel past its normal limit, so a glare-filled room becomes workable without reaching for the blinds. A saved preset recalls both brightness and the colour profile I prefer for layout work, applied with a single click from the menu bar.
Afternoon switch: changing input sources
When a colleague drops by with a Mac mini to review footage, switching the shared display from USB-C to HDMI takes two clicks. No reaching for the monitor’s side buttons, no scrolling through awkward on-screen menus.
Evening adjustment: Dark Mode and keyboard control
As the studio dims, Dark Mode and Night Shift respond instantly — version 3.9.6 tightened that handover noticeably. Tapping the Mac’s brightness keys now dials the external monitor down in step with the built-in screen, a small touch that keeps the room’s light level coherent.
What changed in 3.9.6: a few small fixes that sharpen daily use
Version 3.9.6 arrived in late August 2026 and, on first glance, the list looks modest. In practice, two changes stand out.
The addition of colour profile and macOS Display Preset selection on compatible displays means a designer switching between print and screen work can bundle a profile into a preset — no separate trip to System Settings. The volume slider fix is subtler: a handful of DDC displays had been hiding the slider entirely, and those users now see it back in its usual spot. The preset menu no longer clips when the list grows long, and the Dark Mode, Night Shift and True Tone controls feel snappier, with less lag between clicking and the display actually shifting.
DDC blocked on M-series Macs: the cable fix
A few things trip people up, most of them easily sorted.
DDC not responding on an M-series Mac. This is the most frequent issue. Some monitor-USB-C cable combinations block DDC signals even though the display technically supports the protocol. The first thing to try is a different cable — short, high-quality USB-C or Thunderbolt cables tend to fare better. A direct connection without a hub or dock also helps. If the monitor has an OSD setting for DDC/CI, confirm it is switched on there; many ship with it off by default.
Brightness keys not affecting the external display. DisplayBuddy needs Accessibility permissions to intercept keyboard events. Open System Settings → Privacy & Security → Accessibility and make sure the toggle is active. A relaunch of the app after granting permission usually clears it up.
Preset reverting on wake. Some displays renegotiate their connection after sleep, which can override the last preset. Saving the preset and manually reapplying it once after wake is a reliable workaround; a few users also set a keyboard shortcut for their most-used preset to make that reapplying instant.
Multi-monitor desks: syncing brightness across mismatched panels
The app earns its keep with three groups in particular.
People with multi-monitor desks. Synchronising brightness and contrast across two or three mismatched panels without fiddling with individual OSD menus saves real time and keeps colour perception consistent throughout the day.
MacBook Pro users who work outdoors or near large windows. UltraBright alone justifies the download for this crowd. The standard peak brightness ceiling vanishes when the sun hits, and having that toggle in the menu bar rather than buried in settings is the difference between using it and forgetting it exists.
Anyone sharing a display between machines. Switching input sources from the menu bar — HDMI to DisplayPort, USB-C back to HDMI — removes the one genuinely irritating hardware interaction from a shared-studio setup. It is a small convenience that accumulates quickly when the switch happens several times a day.
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