PDA

View Full Version : G750JX Bad EDID - solved



P3rk3l3
04-19-2017, 10:35 AM
Hello,

I had this issue for while now and need help, somehow my display EDID got overwritten or deleted, at first my Laptop display wouldn't turn on but I managed to get it to start by enabling secure boot in BIOS using an external display.

From what I understood from here ( https://msdn.microsoft.com/en-us/windows/hardware/drivers/display/overriding-monitor-edids ) there is a way to fix this with the help of an INF file provided by the manufacturer, can anyone help me solve this issue ?

Thank You !

P3rk3l3
04-19-2017, 01:27 PM
Can anyone maybe at least help me with pasting the monitor INF file created from their own G750JX model ?

P3rk3l3
04-19-2017, 04:05 PM
Bump !

xeromist
04-19-2017, 05:22 PM
Have you read all of these tips:
http://www.tested.com/tech/pcs/457468-troubleshooting-dvi-and-edid-issues/

Also, Will didn't seem to mention it in the link above but since Windows keeps the EDID in the registry it's possible that the hardware is fine but the registry is corrupted. You could try *backing up* the registry key and deleting it to see if Windows can recreate it from hardware.

P3rk3l3
04-20-2017, 08:13 AM
Thanks for the help but I still need a copy of the EDID for the monitor on this model, does anyone have the same model or know where to find it ?

P3rk3l3
04-20-2017, 12:37 PM
Nobody here that owns a G750JX that is willing to dump a file ?

Eleiyas
04-20-2017, 02:52 PM
tell me how to retrieve the information you require and I'll see if I can't spot a G750 over here

P3rk3l3
04-20-2017, 04:05 PM
You just need this software ( http://www.entechtaiwan.com/util/moninfo.shtm ) select the built in display form the list and after that File -> Create INF , that's the file I need.

cl-Albert
04-20-2017, 04:17 PM
tell me how to retrieve the information you require and I'll see if I can't spot a G750 over here


You just need this software ( http://www.entechtaiwan.com/util/moninfo.shtm ) select the built in display form the list and after that File -> Create INF , that's the file I need.

fyi. You guys probably know, but since the G750JX can use different brands and models of LCD panels, wondering if the exact same brand and model of LCD panel needs to be used. Anyway, wanted to mention it just in case it makes a difference. Thanks.

P3rk3l3
04-20-2017, 05:15 PM
I didn't know this, but since it is already corrupted what harm can it do if I overwrite it.

cl-Albert
04-20-2017, 06:17 PM
Honestly, didn't study this too carefully and don't know if it will matter, but as you mentioned since the system isn't working right now, shouldn't be a big deal either way and the EDID may really just be model-specific rather than LCD-panel specific for our notebooks, so sorry for the confusion.

P3rk3l3
04-20-2017, 06:52 PM
I can't believe I actually fixed it !

Here are the details in case anyone needs this at any point.

I used the python script from here ( https://github.com/bulletmark/edid-rw ) in order to write the EDID, you do need a Linux distro to do this.

And here is the EDID for my LCD Model B173HW02 :

00ff ffff ffff ff00 06af 9d21 0000 0000
0016 0104 9026 1578 02c8 959e 5754 9226
0f50 5400 0000 0101 0101 0101 0101 0101
0101 0101 0101 1437 80c0 7038 2040 3064
3600 7dd6 1000 0018 0000 000f 0000 0000
0000 0000 0000 0000 0020 0000 00fe 0041
554f 0a20 2020 2020 2020 2020 0000 00fe
0042 3137 3348 5730 3220 5631 200a 0051

xeromist
04-20-2017, 07:05 PM
Congrats! Where did you get the EDID? That might be relevant to someone else with a different panel. They probably shouldn't try to use the same EDID.

P3rk3l3
04-20-2017, 07:11 PM
I got it from a G750JZ model actually , not even the same as mine, using the script I provided previously, I manually corrected the EDID where I noticed it had broken values, a bit barbaric but it worked flawlessly, as soon as I wrote the new EDID the screen turned on.

The EDID can also be retrieved using this http://www.entechtaiwan.com/util/moninfo.shtm

Eleiyas
04-21-2017, 05:44 AM
glad you fixed the issue you had :)