NAME

       edid-decode - Decode EDID data in human-readable format

SYNOPSIS

       edid-decode <options> [in [out]]

DESCRIPTION

       edid-decode  decodes  EDID  monitor  description data in human-readable format.  If [in] is not given, or
       [in] is '-', then the EDID will be read from standard input. If [out] is given then  the  EDID  that  was
       read  from  [in]  is  written  to  [out]  or to standard output if [out] is '-'. By default the output is
       written as a hex dump when writing to standard output or a raw EDID if written to a file.

       If [out] is given then edid-decode only does the conversion, it will skip the decoding step.

       Input files may be raw binaries or ASCII text.  ASCII input is scanned  for  hex  dumps;  heuristics  are
       included  to search for hexdumps in edid-decode(1) output (as long as the initial hex dump was included),
       xrandr(1) property output and Xorg(1) log file formats, otherwise the data is treated as a  raw  hexdump.
       EDID  blocks  for  connected  monitors can be found in /sys/class/drm/*/edid on modern Linux systems with
       kernel modesetting support.

STANDARDS

       The following EDID standards are supported by edid-decode:

              EDID 1.3: VESA Enhanced Extended Display Identication Data Standard, Release A, Revision 1

              EDID 1.4: VESA Enhanced Extended Display Identication Data Standard, Release A, Revision 2

              DisplayID 1.3: VESA Display Identification Data (DisplayID) Standard, Version 1.3

              DisplayID 2.0: VESA DisplayID Standard, Version 2.0

              DI-EXT: VESA Display Information Extension Block Standard, Release A

              LS-EXT: VESA Enhanced EDID Localized String Extension Standard, Release A

              VTB-EXT: VESA Video Timing Block Extension Data Standard, Release A

              HDMI 1.4b: High-Definition Multimedia Interface, Version 1.4b

              HDMI 2.1: High-Definition Multimedia Interface, Version 2.1

              HDMI 2.1: Amendment A1 to HDMI Specification Version 2.1

              CTA-861-G: A DTV Profile for Uncompressed High Speed Digital Interfaces

              SPWG Notebook Panel Specification, Version 3.5

              EPI Embedded Panel Interface, Revision 1.0

OPTIONS

       -h, --help
              Prints the help message.

       -o, --output-format=<fmt>
              If [out] is specified, then write the EDID in format <fmt>.
              The output format can be one of:
              hex: hex numbers in ascii text (default for stdout)
              raw: binary data (default unless writing to stdout)
              carray: c-program struct

       -c, --check
              Check if the EDID conforms to the standards. Warnings and failures are reported at the end.

       -C, --check-inline
              Check if the EDID conforms to the standards. Warnings and failures are reported as they happen.

       -s, --skip-hex-dump
              Skip the initial hex dump of the EDID.

       --skip-sha
              Don't show the SHA hash. Normally edid-decode will show the SHA, i.e. the hash of the  git  commit
              used  to  compile edid-decode. This uniquely identifies the version of edid-decode that is used to
              generate the warnings and failures. But it will also change the output of  edid-decode  for  every
              new  commit  in  the  git repository, even if nothing else changed in the edid-decode output.  Use
              this option to avoid including the SHA in the edid-decode output.

       -e, --extract
              Extract the contents of the first block in hex values.  This was always done  in  old  edid-decode
              versions. To get the same behavior add this option.

NOTES

       Not  all  fields  are  decoded,  or  decoded completely.  Some fields' decoding may appear to corrupt the
       output (for example, detailed string sections have their contents printed literally).   edid-decode  does
       attempt  to  validate  its  input  against the relevant standards, but its opinions have not been double-
       checked with the relevant standards bodies, so they may be wrong.  Do not rely on the output  format,  as
       it will likely change in future versions of the tool as additional fields and extensions are added.

SEE ALSO

       Xorg(1), xrandr(1)

AUTHORS

       edid-decode  was  written  by  Adam  Jackson,  with  contributions from Eric Anholt, Damien Lespiau, Hans
       Verkuil    and    others.     For    complete     history     and     the     latest     version,     see
       http://git.linuxtv.org/cgit.cgi/edid-decode.git

                                                                                                  edid-decode(1)