4090/4080 eDP DP_D vBIOS MOD

[SuperMG]

5 hours ago, ssj92 said:

Just checked 2 5090 & 3 5080 vBIOS. 

 

2x 5080 = DP_B

1x 5080 = DP_A

 

1x 5090 = DP_A

1x 5090 = DP_B

 

So none have DP_D. I'd be surprised there's any 5090/5080 with DP_D eDP since 4090/4080 doesn't have any 

I asked them and I'm waiting for X-Vsion VBIOS and I'll use the software to parse the DCB data.

[ssj92]

7 hours ago, SuperMG said:

I asked them and I'm waiting for X-Vsion VBIOS and I'll use the software to parse the DCB data.

I forgot to ask, so since the DP is on A or B, do you see any bios screens on the 4090/4080? 

[SuperMG]

17 minutes ago, ssj92 said:

I forgot to ask, so since the DP is on A or B, do you see any bios screens on the 4090/4080? 

Yes A works but B doesn't (since eDP is on B and laptop's eDP is in D). Only DP_A, DP_C and DP_D are working.

 

Yes BIOS screen works on all the laptops I tested. I guess they don't care if it's DP or EDP in D

[ssj92]

1 hour ago, SuperMG said:

Yes A works but B doesn't (since eDP is on B and laptop's eDP is in D). Only DP_A, DP_C and DP_D are working.

 

Yes BIOS screen works on all the laptops I tested. I guess they don't care if it's DP or EDP in D

Have you tested this on AW systems? I don't have any non AW to test atm but having this knowledge will help

 

basiclaly, A, C, D will show bios screen but not work in windows with edid override 

[SuperMG]

15 minutes ago, ssj92 said:

Have you tested this on AW systems? I don't have any non AW to test atm but having this knowledge will help

 

basiclaly, A, C, D will show bios screen but not work in windows with edid override 

Yes I can go to BIOS with the RTX 3080 and RTX 4070 with the backlight mod v2 in dp_d

 

Because of DP_B, the drivers is packing and setting all displays to error 43 non-PnP 

[ssj92]

25 minutes ago, SuperMG said:

Yes I can go to BIOS with the RTX 3080 and RTX 4070 with the backlight mod v2 in dp_d

 

Because of DP_B, the drivers is packing and setting all displays to error 43 non-PnP 

What about 4080/4090 on AW? It also show bios screen with eDP cable then windows black screens? 

[SuperMG]

16 minutes ago, ssj92 said:

What about 4080/4090 on AW? It also show bios screen with eDP cable then windows black screens? 

Yup. Like on Clevo and Dell Precision too.

 

Windows only blackscreen when drivers are present

[ssj92]

26 minutes ago, SuperMG said:

Yup. Like on Clevo and Dell Precision too.

 

Windows only blackscreen when drivers are present

That's very interesting, so the laptops themselves don't even care about eDP on A, C, D. I will need to look into the vBIOS more now with this data.

 

If you can get their 5080/5090 vbios send to me so I can check it as well. 

 

This is all a windows issue with nvidia driver. 

[SuperMG]

3 minutes ago, ssj92 said:

That's very interesting, so the laptops themselves don't even care about eDP on A, C, D. I will need to look into the vBIOS more now with this data.

 

If you can get their 5080/5090 vbios send to me so I can check it as well. 

 

This is all a windows issue with nvidia driver. 

Yep as I knew it's a Nvidia drivers issue 100%. Yes laptops only want DP/eDP data to display on the eDP DP_D display, that's it.