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Brightness: optional smooth automatic brightness - #35

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brkosebay wants to merge 19 commits into
OrchardLinux:mainfrom
brkosebay:j71t/brightness
Open

brkosebay wants to merge 19 commits into
OrchardLinux:mainfrom
brkosebay:j71t/brightness

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@brkosebay

@brkosebay brkosebay commented Nov 8, 2026 •

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Part 3 of 14 of the iPad 5 (J71t) series in this repository; merge after #34.

Problem

The panel kept a fixed brightness; there was no automatic brightness from the ambient-light sensor.

Change

Add an optional, off-by-default automatic brightness daemon (generic IIO lux or iio-sensor-proxy, no board calibration), a toggle in the Display panel and its CLI.

Testing

  • Hardware: iPad 5 Wi-Fi (J71t). Hands-on testing on 2026-11-11 with an integrated build of this series, made before the final failure-path fixes, covered automatic brightness.
  • 2026-11-12: no further hardware test of this change beyond the above.
  • Host: the Linux test suite passes at this branch's head (with Orchard at the top of its series).

Dependencies

Depends on #34.

This branch is stacked on the PRs it depends on and carries their commits; the change of this PR is its last commit, "Brightness: optional smooth automatic brightness".

This update keeps the branch's earlier history: it merges the current base into the branch and adds the reworked change as a new commit on top.

🤖 Generated with Claude Code

@brkosebay
brkosebay marked this pull request as ready for review November 8, 2026 15:51
Bring this branch onto current main. The merge keeps the other side's
tree; the next commit carries the reworked version of this branch's
change.
Bring this branch onto current main and the series it depends on. The
merge keeps the other side's tree; the next commit carries the reworked
version of this branch's change.
Bring this branch onto current main and the series it depends on. The
merge keeps the other side's tree; the next commit carries the reworked
version of this branch's change.
Automatic rotation could not be overridden: there was no manual rotation
or lock in the menu.

Add omarchy-rotate with rotate and lock commands, menu entries for them,
and the release root wiring.

Assisted-by: LLM
The tablet had no lock on cover close, no dim before idle lock, and
suspend was offered even when the kernel could not complete it.

Lock on cover close, dim before the idle lock, disable hibernation, and
gate suspend on ipadlinux-suspend-ready, the kernel's readiness report.
Documented in docs/power-and-lock.md.

Assisted-by: LLM
The panel kept a fixed brightness; there was no automatic brightness
from the ambient-light sensor.

Add an optional, off-by-default automatic brightness daemon (generic IIO
lux or iio-sensor-proxy, no board calibration), a toggle in the Display
panel and its CLI.

Assisted-by: LLM
Bring this branch onto current main, which now has the Smart Cover lock
and wake in omarchy-powerd.
Bring this branch onto current main, which reads the Smart Cover in
omarchy-powerd: closing it is a lock, opening it a wake. That replaces
this branch's cover-close and cover-suspend socket requests and their
test. A sleep after a cover lock goes through the same suspend
readiness check as Power and idle, which the merged test now covers.
Bring this branch onto current main and the series it depends on.
An earlier wording pass on this branch turned "owner" into
"maintainer" in lines that come from main: powerd is the one owner of
the screen, the lock request and sleep, and the shutdown menu test
quotes that. Restore main's wording in the state model doc, the
powerd comment and the test.

Assisted-by: LLM
Bring this branch onto current main and the series it depends on.
The sensor test's note on a hands-on check named no person but read as
a maintainer's report; call it a hands-on test. The tablet sensor
notes call the power daemon the sole owner of screen-off and sleep, as
the power state model does.

Assisted-by: LLM
Orchard main now gives every installed system the Mac current
identity (0x1014) on its own, and nothing reads
/etc/orchard/mac-usb-current any more, so the notes on opting in with
that flag describe a switch that no longer exists.

Assisted-by: LLM
ipadlinux-suspend-ready first asked Orchard's device-feature helper
whether the board's feature table marked suspend as working. Orchard
does not ship that table: feature states describe a board, they do not
switch behaviour. Without the helper every sleep request was refused.

Decide from the kernel's own admission query on every board instead.
/sys/power/suspend_ready answers "ready" or names the first driver or
precheck that would refuse; a kernel without the query cannot show
that a suspend would be admitted, so sleep stays refused there, as do
an unreadable or malformed answer. The helper no longer reads the
board identity. Powerd, the session menu and systemd's direct suspend
guard keep calling the same helper.

Assisted-by: LLM
Bring this branch onto current main and the series it depends on.
@brkosebay brkosebay changed the title Optional smooth automatic brightness Brightness: optional smooth automatic brightness Nov 13, 2026
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