G750JX Bad EDID - solved

[P3rk3l3]

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]

I didn't know this, but since it is already corrupted what harm can it do if I overwrite it.

[P3rk3l3]

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

[cl-Albert]

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.

[xeromist]

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]

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