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EDID Parser

作者 LeYao1017 · GitHub ↗ · v1.0.1 · MIT-0
cross-platform ✓ 安全检测通过
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在 OpenClaw 中安装
/install edid-parser
功能描述
Parse and analyze EDID (Extended Display Identification Data) from monitors and displays. USE WHEN: (1) User wants to read/parse display EDID information; (2...
使用说明 (SKILL.md)

EDID Parser

Comprehensive EDID parsing and analysis skill for Linux systems.

Quick Start

1. Parse a single EDID file

# From sysfs (Linux)
edid-decode /sys/class/drm/card0-HDMI-A-1/edid

# Or use our script
python3 scripts/parse_edid.py /sys/class/drm/card0-HDMI-A-1/edid

2. List all display outputs

bash scripts/list_outputs.sh

3. Validate and generate diagnostic report

bash scripts/validate_edid.sh /path/to/edid.bin

4. Extract key information (JSON)

python3 scripts/extract_info.py /path/to/edid.bin

5. Batch process multiple EDID files

python3 scripts/batch_validate.py /path/to/edid/directory/

Features

Feature 1: EDID Validity Check ✅

Validates if EDID is:

  • Present and non-empty
  • Has valid header (00 FF FF FF FF FF FF 00)
  • Has valid checksum
  • Can be decoded by edid-decode

Usage:

bash scripts/validate_edid.sh /sys/class/drm/card0-HDMI-A-1/edid

Feature 2: Diagnostic Report

Generates human-readable diagnostic report with:

  • Basic information (manufacturer, model, year)
  • Display capabilities (resolution, refresh rate, screen size)
  • Feature support (audio, YCbCr, HDR, VRR)
  • Warnings and issues

Usage:

python3 scripts/diagnostic_report.py /path/to/edid.bin

Feature 3: Human-Readable Report

Converts technical EDID data to easy-to-understand Chinese report.

Usage:

python3 scripts/extract_info.py /path/to/edid.bin

Output example:

📺 Display Info
   Manufacturer: Samsung (SAM)
   Model: FTV
   Production Date: Week 4, 2020
   
🖥️ Display Capabilities
   Max Resolution: 1920x1080 @ 60Hz
   Screen Size: 32 inches
   Audio: Supported (2-channel PCM)
   
🎨 Color Space
   RGB: Supported
   YCbCr 4:4:4: Supported
   YCbCr 4:2:2: Supported

⚠️ Issues/Warnings
   - Only 60Hz supported, no high refresh rate

Feature 4: Batch Processing

Process multiple EDID files and generate summary report.

Usage:

python3 scripts/batch_validate.py ~/Downloads/edid/test-samples/Digital/

Output:

=== Batch EDID Validation ===
Total: 10 | Valid: 9 | Invalid: 1 | Warnings: 3

Invalid:
  - Digital/Sony/MS_0003/F19C835333F6 (128 bytes - Too small)

With Warnings:
  - Digital/Goldstar/GSM0000/A36298C521A5
  - Digital/TCL/TCL0000/0067660D05BD

Scripts

Script Description
list_outputs.sh List all available display outputs on Linux
parse_edid.sh Parse and display EDID in detail
extract_info.py Extract key info as JSON
validate_edid.sh Validate EDID and check for issues
diagnostic_report.py Generate human-readable diagnostic report
batch_validate.py Batch process multiple EDID files

Prerequisites

  • edid-decode must be installed: 
    sudo apt-get install edid-decode

Common EDID File Locations

Linux

# Find all EDID files
find /sys/class/drm -name "edid" -type f

# Typical paths
/sys/class/drm/card0-HDMI-A-1/edid
/sys/class/drm/card0-DP-1/edid
/sys/class/drm/card0-DVI-D-1/edid

Extract from file

# Extract binary from text file
cat EDID.txt | grep -E '^([a-f0-9]{32}|[a-f0-9 ]{47})$' | tr -d '[:space:]' | xxd -r -p > EDID.bin

Examples

Example 1: Check monitor capabilities

User says: "What resolutions and refresh rates does my monitor support?"

Action:

python3 scripts/extract_info.py /path/to/edid.bin
# Or use built-in test sample:
python3 scripts/extract_info.py samples/test_tv_4k.bin

Example 2: Use built-in test samples

The skill includes sample EDID files for testing:

# 4K TV sample (3840x2160 @ 30Hz)
python3 scripts/extract_info.py samples/test_tv_4k.bin

# 1080p Monitor sample (1920x1080 @ 60Hz)  
python3 scripts/extract_info.py samples/test_monitor_1080p.bin

# 4K Streaming stick sample (3840x2160 @ 60Hz)
python3 scripts/extract_info.py samples/test_stick_4k.bin

Example 3: Validate all EDID files in a directory

User says: "Check if all EDID files in this directory have any issues"

Action:

python3 scripts/batch_validate.py ~/Downloads/edid/test-samples/Digital/

Example 4: Debug display issue

User says: "Monitor not displaying, is it an EDID issue?"

Action:

bash scripts/validate_edid.sh /sys/class/drm/card0-HDMI-A-1/edid

Check for:

  • Empty EDID (no display connected)
  • Invalid checksum (corrupted)
  • Missing DTD (no detailed timing)

Troubleshooting

EDID is empty

  • Monitor may be in sleep mode or disconnected
  • Try waking the monitor
  • Check cable connections

EDID decode errors

  • EDID may be corrupted
  • Monitor may not support standard EDID

No display detected

  • Check /sys/class/drm/ for available outputs
  • Try different port (HDMI/DP/DVI)

References

  • references/manufacturer_codes.md - EDID manufacturer codes
  • references/edid_spec.md - EDID specification overview
  • references/feature_plan.md - Feature roadmap
安全使用建议
This skill appears coherent for parsing EDID on Linux. Before using it: (1) install edid-decode (sudo apt-get install edid-decode); (2) run the scripts locally — they only read files under /sys/class/drm or files you point them to; (3) avoid running commands that write to sysfs (e.g., echo > /sys/class/drm/...) unless you understand the effect and have appropriate privileges; (4) note the minor inconsistency where batch_validate.py skips .bin files when scanning directories (you can still pass .bin files directly to other scripts); (5) inspect scripts if you will run them with elevated privileges. Overall the skill is internally consistent with its stated purpose.
功能分析
Type: OpenClaw Skill Name: edid-parser Version: 1.0.1 The edid-parser skill is a legitimate utility designed to read, parse, and analyze Extended Display Identification Data (EDID) on Linux systems. It utilizes the standard 'edid-decode' system utility through a series of Bash and Python scripts (e.g., list_outputs.sh, extract_info.py, and diagnostic_report.py) to provide human-readable and structured JSON reports on monitor capabilities. The code follows its stated purpose, correctly handles file paths with quoting to prevent shell injection, and contains no evidence of data exfiltration, persistence mechanisms, or malicious prompt injection.
能力评估
ℹ Purpose & Capability
The skill is an EDID parser for Linux and its scripts operate on /sys/class/drm and EDID files, which is appropriate. Minor mismatch: SKILL.md and docs claim support for binary .bin files, but batch_validate.py explicitly skips .bin files when scanning directories (it still can process .bin if given directly to other scripts). This looks like a small implementation inconsistency rather than malicious behavior.
ℹ Instruction Scope
Runtime instructions and scripts only read local EDID files and run the local edid-decode binary; they do not make network calls or require secrets. One documentation snippet (references/edid_spec.md) shows 'echo 1 > /sys/class/drm/card0-HDMI-A-1/edid' to force a re-read — that writes to sysfs and requires elevated privileges and can affect kernel/device state. That write operation appears only in a reference doc, not in the primary Quick Start scripts, so treat it as an advisory example rather than an automated action.
✓ Install Mechanism
No install spec is provided and scripts are local files. The only external dependency is the standard edid-decode utility (documented). No downloads, external packages, or unusual installers are used.
✓ Credentials
The skill requests no environment variables or credentials. It accesses system paths under /sys/class/drm and user-supplied file paths, which is proportional to parsing EDID data.
✓ Persistence & Privilege
always is false and the skill does not request persistent system-wide configuration or modify other skills. Scripts operate on files provided or discovered at runtime and do not install background services.
如何使用
  1. 确保已安装 OpenClaw（本地或 Docker 部署）
  2. 在对话框中输入安装命令：/install edid-parser
  3. 安装完成后，直接呼叫该 Skill 的名称或使用 /edid-parser 触发
  4. 根据 Skill 的参数说明提供必要输入，即可获得结构化输出
版本历史
v1.0.1
Update to English-only documentation
v1.0.0
Initial release: Parse and analyze EDID data from displays
元数据
Slug edid-parser
版本 1.0.1
许可证 MIT-0
累计安装 0
当前安装数 0
历史版本数 2
常见问题

EDID Parser 是什么？

Parse and analyze EDID (Extended Display Identification Data) from monitors and displays. USE WHEN: (1) User wants to read/parse display EDID information; (2... 它是一个面向 Claude Code / OpenClaw 的 AI Agent Skill 插件，目前累计下载 91 次。

如何安装 EDID Parser？

在 OpenClaw 或 Claude Code 对话框中运行命令「/install edid-parser」即可一键安装，无需额外配置。

EDID Parser 是免费的吗？

是的，EDID Parser 完全免费，采用 MIT-0 许可证，可自由下载、安装和使用。

EDID Parser 支持哪些平台？

EDID Parser 跨平台运行，可在任意部署了 OpenClaw / Claude Code 的环境中使用（cross-platform）。

谁开发了 EDID Parser？

由 LeYao1017（@leyao1017）开发并维护，当前版本 v1.0.1。

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