# Monitors stay black (0x0) when the PC boots with monitors powered off — they never recover

## Summary
When the PC boots while the monitors are powered off (AC cut — e.g. smart power strip: the PC powers on automatically when power returns, but the monitors don't), Hyprland detects the monitors with partial EDID (make/model/physical size, **no video modes**). The monitors are created at `width=0 height=0`. When the monitors are powered on later, the session **never recovers**: black screens until reboot (or manual `hyprctl reload`).

## Environment
- Omarchy quattro: `omarchy-dev 4.0.0.r1046.gd570d99-1`
- Hyprland `0.56.0-2` (installed Jul 27, while still on 3.8.4 — see note below)
- Kernel `7.1.6-1-cachyos`
- GPU: AMD RX 6600 XT (amdgpu, navi23)
- Monitors: 3x Samsung "SAC DP1" 2560x1440 (DP-1 center, DP-2/DP-3 sides)

## Reproduction
1. Cut AC power to the monitors (smart strip off); PC stays on / power returns and the PC boots itself.
2. The PC boots with the monitors unpowered.
3. Power the monitors on manually (minutes later).
4. Result: black screens. The graphical session started fine (uwsm/Hyprland OK, no errors), but the monitor is stuck at 0x0.

## Evidence
`hyprctl monitors -j` after booting with monitors in standby:
```json
{
  "id": 0,
  "name": "DP-1",
  "description": "SAC DP1 0000000000000",
  "make": "SAC",
  "model": "DP1",
  "width": 0,
  "height": 0,
  "physicalWidth": 700,
  "physicalHeight": 390,
  ...
}
```
- `modes` is empty/null: the partial EDID the monitor reports in standby has no video modes → `mode = "preferred"` fails → monitor 0x0.
- The connector never disconnects at the DRM level: **no `monitoradded`/`monitorremoved` events fire** when the monitor is powered on → Hyprland never re-reads the EDID → 0x0 permanently.
- With the monitors powered on before booting: everything works (same config).

## Workaround (what we use meanwhile)
A user-level watcher that every 3s looks for enabled monitors with `width == 0` and runs `hyprctl reload` (plus explicit `hl.monitor` re-apply if the reload isn't enough). When the user powers the monitors on, the screens appear within ~3s. No reboot needed.

## Version note
This did not happen on 3.8.4 (Hyprland 0.55.4). The monitor config is identical between versions. Hyprland 0.56.0 and kernels 7.1.4/7.1.6 landed right before/during the migration. We suspect the change is in how Hyprland's DRM backend treats a "connected" connector with an EDID that has no modes (previously: treated as not connected → hotplug on wake → recovery; now: a permanent 0x0 monitor).

## Suggestion
`omarchy-hyprland-monitor-watch` only recovers internal monitors (clamshell). An equivalent mechanism for external monitors (detect 0x0 and re-apply `monitors.lua`) would fix this natively.