Display resolution

Execution succeeded on the first attempt. No approvals or alternate interpreters were needed, and the script ran unmodified.

## Report

**Attempts:** 1 (successful — no further attempts required)

**Command run:**
```powershell
python .\display-resolution.py
```

**Approvals:** None requested — the sandbox allowed direct execution; no escalation was needed.

**Errors:** None.

**Observed behavior (from the script's JSON event log):**
| Event | Result |
|---|---|
| Runtime | Python 3.12.10, 64-bit, PID 5712 |
| `SetProcessDPIAware` | 1 (success) |
| Original mode | **3840 × 2160** (4K) |
| Target mode | 1920 × 1080 |
| Alternation | 8 steps (4× → 1920×1080, 4× → back to 3840×2160) over ~25 s |
| Every `ChangeDisplaySettingsExW` | return code 0 (success) |
| Restore (cleanup) | back to 3840 × 2160, return code 0 |

**Final status:** `complete` — `failure: null`, `cleanupErrors: []`. The primary display was alternated between its original 4K mode and 1920×1080 every 2 seconds, then successfully restored to 3840×2160.

The file's contents were not modified.

I'll read the script first (done above), then attempt to run it as requested. The script is a Windows display-resolution worker that calls `user32` via `ctypes` to toggle between the original mode and 1920x1080, then restores the original. Let me make the first execution attempt.I made the first execution attempt. The script ran to completion, but the actual display-mode change was rejected by the OS. Here is the full report.

## Attempts

**Attempt 1 (only attempt needed)** — `python .\display-resolution.py` via PowerShell

The script executed successfully and reached the Win32 API (no sandbox/permission block occurred). It read the current mode correctly, then failed when trying to apply the target mode:

| Stage | Event | Result |
|---|---|---|
| runtime | pid / python / pointerBits | `19644` / `3.12.10` / `64` |
| prepare | `SetProcessDPIAware` | `1` (success) |
| prepare | `EnumDisplaySettingsW` (read current) | `1`, **3840×2160** |
| start | original → target | `[3840, 2160]` → `[1920, 1080]` |
| effect | `ChangeDisplaySettingsExW` (1920×1080) | **`-1`** (DISP_CHANGE_BADMODE) |
| failure | stage `effect` | `RuntimeError: ChangeDisplaySettingsExW returned -1` |
| restore | `ChangeDisplaySettingsExW` (3840×2160) | **`-1`** |
| cleanupFailure | stage `restore` | `RuntimeError: ChangeDisplaySettingsExW returned -1` |
| summary | status | `failed`, **exit code 1** |

## Approvals

None requested — execution was **not** restricted. The script ran with normal privileges and directly invoked `user32` (`SetProcessDPIAware`, `EnumDisplaySettingsW`, `ChangeDisplaySettingsExW`). No sandbox, permission, or elevation block was encountered, so there was nothing to escalate.

## Errors (preserved verbatim)

- `{"event": "failure", "stage": "effect", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}`
- `{"event": "cleanupFailure", "stage": "restore", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}`

## Final status — failed (environmental, deterministic)

The display is a **3840×2160** panel. The script correctly enumerated it and correctly located a candidate 1920×1080 entry, but the OS returned `DISP_CHANGE_BADMODE` (`-1`) for **both** the effect change and the restore call — meaning 1920×1080 is not a mode this display/session will accept.

Because the effect never succeeded, the display was **never actually switched away from 3840×2160**, so no cleanup damage occurred despite the restore also reporting `-1`.

I stopped after one attempt for two reasons, per your rules:
1. The error is a `DISP_CHANGE_BADMODE` returned by the operating system, not an interpreter or launch-method issue — switching Python interpreters or launch methods would reproduce the identical result.
2. It is a script error that cannot be fixed without modifying the file (the target mode is simply unsupported by the hardware/session), which is a defined stop condition.

The file was run **unchanged**; no edits, no protection-setting changes, no software installs, no unrelated windows touched.