參考文檔：
http://manpages.ubuntu.com/manpages/wily/man1/get-edid.1.html
原文：
Name
Synopsis
Description
Author
See Also
wily (1) get-edid.1.gz
Provided by: read-edid_3.0.2-1_i386 bug
NAME
get-edid, parse-edid - read-edid tools to retrieve and interpret
monitor specifications using the VESA VBE DDC protocol
SYNOPSIS
get-edid [OPTIONS] | parse-edid
get-edid [OPTIONS] > filename
parse-edid < filename
DESCRIPTION
The read-edid utility comprises two tools: get-edid and parse-edid.
get-edid uses real mode calls to perform Data Display Channel (DDC)
transfers, or Linux i2c calls to perform Enhanced DDC transfers to
retrieve information from monitors, including identification strings,
supported sync ranges, available video modes, and video mode
parameters. Such information can be useful for configuring X Window
System servers in certain cases.
get-edid returns the raw Extended Display Identification Data (EDID)
block directly from the monitor, so the parse-edid command is available
to interpret it and generate a human-readable block of text information
that can also be included in a X11 xorg.conf file.
Generally the output of get-edid is piped directly to parse-edid.
New in version 3.0.0, get-edid takes a few options.
-b BUS, --bus BUS
only scan the i2c bus BUS (if built with i2c support)
-c, --classiconly
only use the older VBE interface (if built with i2c and VBE
support)
-h, --help
display a basic help message
-i, --i2conly
only use the newer i2c interface (if built with i2c and VBE
support)
-m NUM, --monitor NUM
try to return information about monitor number NUM (VBE only)
-q, --quiet
do not output messages over stderr
parse-edid still does not take any options. --help will show you which
options your build of read-edid supports.
AUTHOR
read-edid is originally the work of John Fremlin and others. Since
1.4.2, the new maintainer and programmer has been Matthew Kern. Nearly
all of the code for this project, as well as this manual page, has been
rewritten for 3.0.0 by Matthew Kern. See AUTHORS for more details.
SEE ALSO
Matthew Kern's read-edid website at <http://polypux.org/projects/read-
edid>
2013-08-29 get-edid(1)
使用方法：
先安裝edid讀取工具：sudo apt-get install read-edid
1.獲取EDID原始數據並存儲到文件中：
yasin@DTT:~$ sudo get-edid > myedid.bin
This is read-edid version 3.0.1. Prepare for some fun.
Attempting to use i2c interface
No EDID on bus 0
No EDID on bus 2
No EDID on bus 3
No EDID on bus 4
No EDID on bus 5
No EDID on bus 6
1 potential busses found: 1
128-byte EDID successfully retrieved from i2c bus 1
Looks like i2c was successful. Have a good day.
yasin@DTT:~$
以上操作會讀取當前顯示器的EDID並存儲到myedid.bin中。該文件中會以二進制形式存儲EDID的128個字節。用beyond compare之類的工具用16進制形式打開這個文件，你可以看到具體的EDID數據：
0x00 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF 0x00 0x10 0xAC 0x0D 0xF0 0x53 0x52 0x30 0x35 0x0F 0x13 0x01 0x03 0x0E 0x29 0x1A 0x78 0xEE 0xEE 0x95 0xA3 0x54 0x4C 0x99 0x26 0x0F 0x50 0x54 0xBF 0xEF 0x80 0x95 0x00 0x71 0x4F 0x81 0x80 0x95 0x0F 0x81 0x00 0x01 0x01 0x01 0x01
0x01 0x01 0x9A 0x29 0xA0 0xD0 0x51 0x84 0x22 0x30 0x50 0x98 0x36 0x00 0x98 0xFF 0x10 0x00 0x00 0x1C 0x00 0x00 0x00 0xFD 0x00 0x38 0x4B 0x1E 0x53 0x0E 0x00 0x0A 0x20 0x20 0x20 0x20 0x20 0x20 0x00 0x00 0x00 0xFF 0x00 0x46 0x35 0x33 0x34 0x46 0x39 0x34 0x38 0x35
0x30 0x52 0x53 0x0A 0x00 0x00 0x00 0xFC 0x00 0x44 0x45 0x4C 0x4C 0x20 0x45 0x31 0x39 0x30 0x39 0x57 0x0A 0x20 0x00 0xC5
在http://www.edidreader.com/網站可以對該數據進行在線解析。把以上128字節複製到該網站的對應數據窗口即可
也可以用ubuntu下的解析工具對上述bin文件進行解析：
yasin@DTT:~$ parse-edid < myedid.bin
Checksum Correct
Section "Monitor"
Identifier "DELL E1909W"
ModelName "DELL E1909W"
VendorName "DEL"
# Monitor Manufactured week 15 of 2009
# EDID version 1.3
# Analog Display
Option "SyncOnGreen" "true"
DisplaySize 410 260
Gamma 2.20
Option "DPMS" "true"
Horizsync 30-83
VertRefresh 56-75
# Maximum pixel clock is 140MHz
#Not giving standard mode: 1440x900, 60Hz
#Not giving standard mode: 1152x864, 75Hz
#Not giving standard mode: 1280x1024, 60Hz
#Not giving standard mode: 1440x900, 75Hz
#Not giving standard mode: 1280x800, 60Hz
Modeline "Mode 0" 106.50 1440 1520 1672 1904 900 903 909 934 -hsync +vsync
EndSection
yasin@DTT:~$
其他參考：
http://hubpages.com/technology/how-to-reflash-a-monitors-corrupted-edid //讀取和修改顯示器的EDID
https://github.com/bulletmark/edid-rw //修改顯示器EDID工具(源碼)