* Support external monitor brightness
Route brightness through the focused Hyprland monitor so internal panels keep using the kernel backlight while compatible external displays use DDC/CI. Preserve the Apple Display backend and leave brightness unavailable when the focused display cannot be controlled.
Add cached DDC bus and VCP range handling, install ddcutil for new and existing systems, and cover backend selection and brightness conversion with shell tests.
* Harden external brightness caching
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Co-authored-by: David Heinemeier Hansson <david@hey.com>
The lock service arms a 5s blank timer whenever the screen locks, and
input at the lock screen re-arms it. Closing the lid sprays pointer
noise over the lock surface, so the timer was routinely armed right
before suspend, froze mid-countdown, and fired moments after resume --
blanking the freshly woken unlock screen under the user.
Guard the timer with a wall-clock check: if far more time elapsed than
the interval, the countdown slept through a suspend, so take a fresh
run-up instead of blanking. This also blanks the lock screen 5s after
an untouched resume.
Two accomplices made the flash worse and hid the real bug:
- The clamshell watcher's 2s poll fired an unconditional global DPMS
enable whenever no external monitor was active, relighting any blank
within 2 seconds (lock-screen blanking never stuck on undocked
laptops) and racing the resume modeset. Recovery now only wakes
displays when it actually re-enables one.
- Every keystroke at the lock screen dispatched a redundant DPMS
enable via omarchy-system-wake, forcing extra modesets in the
fragile just-resumed DRM state. Brightness "on" now skips the
dispatch when every active display is already lit.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* Implement non-uniform brightness step adjustments
Add logic for non-uniform step size adjustments based on current brightness level.
* Ensure percentages are moved in a consistent manner so we don't get rounding errors
* Ensure we don't go below 1%
To prevent screen from turning off entirely on some models
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Co-authored-by: David Heinemeier Hansson <david@hey.com>
