I Hate (Most) Keyboard 'Fn' Keys

Original Article ↗ Hacker News Discussion ↗

Modern keyboard design is drawing ire from power users who rely heavily on function keys, Home/End, and navigation clusters, but are instead forced into cramped layouts, overloaded Fn layers, and even stateful Fn keys that randomly change behavior. Commenters contrast these designs with older IBM-style or programmable mechanical keyboards that preserve full‑size, dedicated keys, and share workarounds like BIOS options, remapping tools, and custom firmware. The broader debate touches on ergonomics and mental load, from “natural” scrolling directions to thumb clusters and split layouts, highlighting a tension between minimalist hardware aesthetics and reliable, discoverable controls.

Fn Keys, Defaults, and Stateful Behavior

  • Many dislike keyboards where media/brightness are primary and F1–F12 require holding Fn or toggling a hidden “Fn lock.”
  • Persistent Fn state (especially “Fn as Caps Lock”) is widely criticized as causing mode confusion and breaking muscle memory.
  • Some laptops/keyboards provide good solutions: BIOS options to flip Fn/Ctrl, choose F-keys vs media as default, or temporary overrides (e.g., Alt+F4 always works regardless of Fn mode).
  • Others handle Fn in firmware only, so the OS can’t see or remap it, leading to unfixable behaviors (e.g., airplane-mode keys or sleep keys next to frequently used keys).

Function Keys vs Media Keys: What People Actually Use

  • Some barely use F-keys and prefer volume/brightness on the top row.
  • Others rely heavily on F-keys for: window closing (Alt+F4), rename (F2), refresh (F5), fullscreen (F11), “Save As” (F12), IDE/debugger shortcuts, Excel, games, web dev tools.
  • Several argue that full‑size, well‑spaced function keys (grouped 4–4–4) are crucial for efficient use.

Keyboard Layouts, Ergonomics, and “Bad” Keys

  • Frequent complaints: missing dedicated Home/End/PgUp/PgDn, cramped arrows, misplaced PrintScreen, and dangerous sleep/power keys near common keys.
  • ThinkPad‑style Fn at bottom left is polarizing; some see it as a long‑standing mistake, others as a deliberate design with BIOS-based escape hatches.
  • Caps Lock is often remapped (Ctrl, Shift, Hyper, push‑to‑talk, Esc), though some still use it for long uppercase sequences.
  • Sleep/power keys are commonly disabled or remapped at OS or registry level; some map sleep to F4.

Natural Scrolling and Input Metaphors

  • Strong split: some find “natural” scrolling intuitive on trackpads (dragging the page), others see it as ergonomically and mentally wrong.
  • Several prefer: natural on trackpads, “classic” on mouse wheels. macOS tying both to a single setting is widely criticized.
  • Third‑party tools are used to separate scroll directions per device and adjust pointer acceleration.

Programmable and Ergonomic Keyboards

  • Many advocate QMK/ZMK/firmware‑programmable or heavily remapped boards to:
    • Put modifiers and layers on thumbs.
    • Replace nav clusters, numpads, and F-rows with layers on home row.
    • Avoid stateful toggles in favor of “quasimodes” (hold‑to‑activate layers).
  • Opinions diverge on ultra‑small (40–50%) and column‑stagger layouts: some find them transformative; others worry about thumb fatigue, awkward reaches, and overcomplex layer state.