Ubuntu 16.04.1 LTS : 3840x2160.bin contains wrong data

[MPolymath]

#Operating system: Ubuntu 16.04.1 LTS

Problem:

When using the parse-edid program (sudo apt-get install read-edid):
parse-edid < /etc/X11/3840x2160.bin

The data outputted does not match the data that should be outputted:

Section "Monitor"
        Identifier "3840x2160"
        ModelName "3840x2160"
        VendorName "LNX"
        # Monitor Manufactured week 5 of 2012
        # EDID version 1.3
        # Analog Display
        DisplaySize 1000 560
        Gamma 2.20
        Option "DPMS" "true"
        Horizsync 134-136
        VertRefresh 59-61
        # Maximum pixel clock is 600MHz
        #Not giving standard mode: 1792x1008, 60Hz
        Modeline        "Mode 0" 594.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync 
EndSection

I have tried creating a edid.bin as instructed in the readme but that also gives me the wrong value:

./modeline2edid - <<< 'Modeline "3840x2160_60.00" 712.75 3840 4160 4576 5312 2160 2163 2168 2237 -hsync +vsync'

Searching for runaway unicorns in '/dev/stdin'
 Found naughty unicorn: Modeline "3840x2160_60.00" 712.75 3840 4160 4576 5312 2160 2163 2168 
2237 -hsync +vsync
Wrote 3840x2160_60.00.S

make

cc -c -DCRC="0x00" -o 3840x2160_60.00.o 3840x2160_60.00.S
edid.S: Assembler messages:
edid.S:171: Warning: value 0x1c1 truncated to 0xc1
edid.S:180: Warning: value 0x1166b truncated to 0x166b
edid.S:270: Warning: repeat < 0; .fill ignored
objcopy -Obinary 3840x2160_60.00.o 3840x2160_60.00.bin.nocrc
cat 3840x2160_60.00.bin.nocrc | edid-decode \
        | sed -ne 's/^[ ]*Checksum: 0x\w\+ (should be \(0x\w\+\))$/\1/p' >3840x2160_60.00.crc
cc -c -DCRC="$(cat 3840x2160_60.00.crc)" -o 3840x2160_60.00.p 3840x2160_60.00.S
edid.S: Assembler messages:
edid.S:171: Warning: value 0x1c1 truncated to 0xc1
edid.S:180: Warning: value 0x1166b truncated to 0x166b
edid.S:270: Warning: repeat < 0; .fill ignored
objcopy -Obinary 3840x2160_60.00.p 3840x2160_60.00.bin
objcopy -Oihex 3840x2160_60.00.p 3840x2160_60.00.bin.ihex
dos2unix 3840x2160_60.00.bin.ihex 2>/dev/null
rm 3840x2160_60.00.crc 3840x2160_60.00.p 3840x2160_60.00.o 3840x2160_60.00.bin.nocrc

parse-edid < 3840x2160_60.00.bin

You seem to have too many extension blocks. Will not continue to parse
Something strange happened. Please contact the author,
Matthew Kern at <pyrophobicman@gmail.com>

Would you have any idea on why this is happening?

[vith]

I'm having similar results with the modeline I'm trying to convert:

$ ./modeline2edid - <<< 'Modeline "1920x1080x120.00"  297.000000  1920 2028 2060 2200  1080 1084 1088 1125  +HSync -Vsync'

Searching for runaway unicorns in '/dev/stdin'
-- Found naughty unicorn: Modeline "1920x1080x120.00" 297.000000 1920 2028 2060 2200 1080 1084 1088 1125 +HSync -Vsync
Wrote 1920x1080x120.00.S

$ make
cc -c -DCRC="0x00" -o 1920x1080x120.00.o 1920x1080x120.00.S
edid.S: Assembler messages:
edid.S:270: Warning: repeat < 0; .fill ignored
objcopy -Obinary 1920x1080x120.00.o 1920x1080x120.00.bin.nocrc
cat 1920x1080x120.00.bin.nocrc | edid-decode \
	| sed -ne 's/^[ ]*Checksum: 0x\w\+ (should be \(0x\w\+\))$/\1/p' >1920x1080x120.00.crc
cc -c -DCRC="$(cat 1920x1080x120.00.crc)" -o 1920x1080x120.00.p 1920x1080x120.00.S
edid.S: Assembler messages:
edid.S:270: Warning: repeat < 0; .fill ignored
objcopy -Obinary 1920x1080x120.00.p 1920x1080x120.00.bin
cc -c -DCRC="0x00" -o 1600x1200.o 1600x1200.S
objcopy -Obinary 1600x1200.o 1600x1200.bin.nocrc
cat 1600x1200.bin.nocrc | edid-decode \
	| sed -ne 's/^[ ]*Checksum: 0x\w\+ (should be \(0x\w\+\))$/\1/p' >1600x1200.crc
cc -c -DCRC="$(cat 1600x1200.crc)" -o 1600x1200.p 1600x1200.S
objcopy -Oihex 1600x1200.p 1600x1200.bin.ihex
dos2unix 1600x1200.bin.ihex 2>/dev/null
make: *** [Makefile:33: 1600x1200.bin.ihex] Error 127
rm 1920x1080x120.00.bin.nocrc 1600x1200.bin.nocrc 1920x1080x120.00.crc 1600x1200.crc 1600x1200.p 1920x1080x120.00.o 1600x1200.o 1920x1080x120.00.p

$ parse-edid < 1920x1080x120.00.bin 
You seem to have too many extension blocks. Will not continue to parse
Something strange happened. Please contact the author,
Matthew Kern at <pyrophobicman@gmail.com>

[akatrevorjay]

What's in the generated template file? ie, 1920x1080x120.00.S

[akatrevorjay]

I was using Ubuntu 16.04.1 when I wrote this, so I'm curious !

[akatrevorjay]

This is what's curious to me:

edid.S: Assembler messages:
edid.S:270: Warning: repeat < 0; .fill ignored

[akatrevorjay]

@MPolymath Did you mean to have a newline in there?

ie ```
Modeline "3840x2160_60.00" 712.75 3840 4160 4576 5312 2160 2163 2168
2237 -hsync +vsync

[vith]

$ cat 1920x1080x120.00.S 
/* 1920x1080x120.00: Modeline "1920x1080x120.00" 297.000000 1920 2028 2060 2200 1080 1084 1088 1125 +HSync -Vsync */
#define HSYNC_POL 1
#define VSYNC_POL 1
#define YPULSE (63+4)
#define XPULSE 32
#define YPIX 1080
#define XPIX 1920
#define VFREQ 60
#define DPI 96
#define CLOCK 297000
#define VERSION 1
#define XOFFSET 108
#define REVISION 3
#define YOFFSET (63+4)
#define YBLANK 45
#define XY_RATIO XY_RATIO_16_9
#define XBLANK 280
#define TIMING_NAME "1920x1080x120.00"
#include "edid.S"

[akatrevorjay]

@vith Care to try the latest commit I made?

[akatrevorjay]

It's not working because it's not finished building. I'm curious how you even have .bin files since it doesn't get to that point? You at least aren't supposed to ;)

Here's an example from mine:

~/git/edid-generator master*
❯ parse-edid < 3840x2160.bin
Checksum Correct

Section "Monitor"
	Identifier "3840x2160"
	ModelName "3840x2160"
	VendorName "LNX"
	# Monitor Manufactured week 5 of 2012
	# EDID version 1.3
	# Analog Display
	DisplaySize 1000 560
	Gamma 2.20
	Option "DPMS" "true"
	Horizsync 134-136
	VertRefresh 59-61
	# Maximum pixel clock is 600MHz
	#Not giving standard mode: 1792x1008, 60Hz
	Modeline 	"Mode 0" 594.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync 
EndSection

[akatrevorjay]

Ah I see, 1600x1200 is seemingly invalid as far as it's concerned.

[vith]

tried with 5d79400:

~/code/edid-generator master
❯ ./modeline2edid - <<< 'Modeline "1920x1080x120.00"  297.000000  1920 2028 2060 2200  1080 1084 1088 1125  +HSync -Vsync'
Searching for modelines in '/dev/stdin'
-- Found modeline: Modeline "1920x1080x120.00" 297.000000 1920 2028 2060 2200 1080 1084 1088 1125 +HSync -Vsync
Computed ratio: 16:9Wrote 1920x1080x120.00.S

~/code/edid-generator master*
❯ make
cc -c -DCRC="0x00" -o 1920x1080x120.00.o 1920x1080x120.00.S
edid.S: Assembler messages:
edid.S:270: Warning: repeat < 0; .fill ignored
objcopy -Obinary 1920x1080x120.00.o 1920x1080x120.00.bin.nocrc
cat 1920x1080x120.00.bin.nocrc | edid-decode \
	| sed -ne 's/^[ ]*Checksum: 0x\w\+ (should be \(0x\w\+\))$/\1/p' >1920x1080x120.00.crc
cc -c -DCRC="$(cat 1920x1080x120.00.crc)" -o 1920x1080x120.00.p 1920x1080x120.00.S
edid.S: Assembler messages:
edid.S:270: Warning: repeat < 0; .fill ignored
objcopy -Obinary 1920x1080x120.00.p 1920x1080x120.00.bin
cc -c -DCRC="0x00" -o 1600x1200.o 1600x1200.S
objcopy -Obinary 1600x1200.o 1600x1200.bin.nocrc
cat 1600x1200.bin.nocrc | edid-decode \
	| sed -ne 's/^[ ]*Checksum: 0x\w\+ (should be \(0x\w\+\))$/\1/p' >1600x1200.crc
cc -c -DCRC="$(cat 1600x1200.crc)" -o 1600x1200.p 1600x1200.S
objcopy -Oihex 1600x1200.p 1600x1200.bin.ihex
dos2unix 1600x1200.bin.ihex 2>/dev/null
make: *** [Makefile:33: 1600x1200.bin.ihex] Error 127
rm 1920x1080x120.00.bin.nocrc 1600x1200.bin.nocrc 1920x1080x120.00.crc 1600x1200.crc 1600x1200.p 1920x1080x120.00.o 1600x1200.o 1920x1080x120.00.p

~/code/edid-generator master*
❯ parse-edid < 1920x1080x120.00.bin
You seem to have too many extension blocks. Will not continue to parse
Something strange happened. Please contact the author,
Matthew Kern at <pyrophobicman@gmail.com>

~/code/edid-generator master*
❯ cat 1920x1080x120.00.S
/* 1920x1080x120.00: Modeline "1920x1080x120.00" 297.000000 1920 2028 2060 2200 1080 1084 1088 1125 +HSync -Vsync */
#define HSYNC_POL 1
#define VSYNC_POL 1
#define YPULSE (63+4)
#define XPULSE 32
#define YPIX 1080
#define XPIX 1920
#define VFREQ 60
#define DPI 96
#define CLOCK 297000
#define VERSION 1
#define REVISION 3
#define XOFFSET 108
#define YOFFSET (63+4)
#define XY_RATIO XY_RATIO_16_9
#define YBLANK 45
#define XBLANK 280
#define TIMING_NAME "1920x1080x120.00"
#include "edid.S"

[akatrevorjay]

@vith install dos2unix :)

[akatrevorjay]

@vith ret code 127 is normally a missing command. In this case, it's dos2unix

[akatrevorjay]

There's another error past that however, where it's actually mistempating your modeline (open up the .c file generated, and you'll see what's wrong pretty quickly ;)