### System details

XPS 9320, IBM dock, 2 lg monitors, omarchy 4.0.3-1

### What's wrong?

From claude:

## What happens
On a laptop docked via USB-C with external displays on DisplayPort MST, unplugging
the dock kills the external displays permanently. Replugging does nothing. Only a
reboot brings them back.

Booting *with* the dock attached works fine, and hot-plugging from a clean boot works
fine. Only undocking is broken.

## Cause
Not Omarchy, and not the kernel — it is `aquamarine` 0.15.0, which Omarchy currently
ships. Upstream: https://github.com/hyprwm/aquamarine/issues/386

0.15.0 added a guard in `commitState` rejecting commits to disconnected outputs, but
`disconnect()` marks the connector disconnected *before* the compositor commits
`setEnabled(false)`. The disable is rejected, so the kernel's CRTC stays active. That
orphaned pipe holds `intel_tc`'s `link_refcount`, the Type-C port can never
re-evaluate its mode, and every later modeset fails.

Introduced by aquamarine commit 9d6fed9 ("core/drm: introduce async commits").
Fix: https://github.com/hyprwm/aquamarine/pull/395 (open, unmerged).

## Why this is easy to misdiagnose
On Arch this arrived in the same pacman transaction as linux 7.1.9 -> 7.2.3, mesa, and
hyprland. It presents as a kernel/i915 bug — monitors enumerate at `0x0@60`, every DRM
atomic modeset fails EINVAL at every resolution. Downgrading the kernel does not help.

There is also a red herring nearby: `typec_altmode_update_active` /`module_put` WARNs
and a `typec_displayport` refcount of -1. Those are real but pre-existing and unrelated.
(Do not `modprobe -r typec_displayport` at refcount -1 — it hits a BUG_ON while holding
`module_mutex` and hangs every `/proc/modules` reader.)

## Repro
1. Boot docked, external displays on DP MST behind a USB-C dock (Intel i915).
2. Unplug the dock.
3. Replug. External displays never return; a reboot is required.

Check for the orphaned pipes after step 2 — more CRTCs with a non-zero fb than
displays Hyprland knows about:

    modetest -M i915 -p | sed -n '/^CRTCs:/,/^planes:/p' \
      | grep -E '^[0-9]+[[:space:]]+[0-9]+[[:space:]]+\(' | awk '$2 != 0'
    hyprctl monitors -j | jq length

## Verified environment
Dell XPS 9320, Raptor Lake-P, i915, kernel 7.2.3-arch1-3, Hyprland 0.56.2,
aquamarine 0.15.0-2, Omarchy 4.0.3. Lenovo ThinkPad USB-C dock, 2x LG UltraFine 4K.

## Fix confirmed
Rebuilding aquamarine 0.15.0 with PR #395 applied resolves it completely — verified by
unplug/replug with no workarounds. Suggest Omarchy either carry the patch until #395
merges, or track the upstream issue for users hitting this after an update.