SuperMG

Wait, you have a M17X R3 eDP correct? I saw your laptop's MXM slot diagram, you can do the soldered version of the backlight mod! It means you can make your RTX 3080 MXM work with your R3 screen! I need to see if it'll work on this laptop because of the mux switch...

I would rather change. Look at the Clevo X7200, there's probably a whitelist for the GPU on the master slot, because the GTX 700 and above won't work. The Zbook G2 and G3 have the eDP on DP_C. I don't even know if there are any Pascal Vbios who use eDP on DP_C... But he can try the Quadro RTX Turing from HP because they all have DP on every ports and even DP_C Although, If he really want to use his GTX 1060M... I know one only way to convert "eDP/DP" DP_D to DP_C...

Hello. For the BIOS mod, I mean it depends on your laptop because you have Optimus, it's an LVDS based system and it's an old Alienware afterall. For the eDP laptops: For our use case, we need to power the BACKLIGHT pins because the modern cards are lacking it simply! The GPU core doesn't even power its own backlight pins and that's why the internal eDP screen isn't even displaying anything! After looking at a various of MXM slot diagrams (from multiple laptops), I see that the 23, 25 and 27 are "one-way signals", meaning it's only going to the display connector and not going back to the MXM GPU.

@janepa If you have an eDP laptop (DP_D eDP) with a MXM slot, please try the mod by soldering pins 278/280 to pins 23,25 and 27 for the backlighting. You'll see that your 4090, 3070 and RTX 5000 will work with the main screen. Try it please.

Hello. Do you know where the eDP is on the X-VSION 4080/4090? I see eDP port on NVIDIA's control panel but I don't get it. I don't get it on which port the EDP is? On port DP_E??? does that even make sense? Please let me know, X-VSION's datasheet shows eDP on DP_B... My flex cable is just to enable the backlight pins back so we can have a display at the end. Most Turing to Ada are lacking the pins. Most of them have DP and eDP on DP_D The picture I sent clearly shows how it works. I see no LVDS conversion. It just 3.3V to power the backlight pins, that's it.

Change laptop, get the G4. The mux switches are making everything complicated too, it's very hard to do physical mods.

Hello again. I think G2 and G3 are different than G4, G5 and G6. G2 and G3 doesn't have eDP on D but on C for the MXM slot. G4 to G6 they have eDP on D for the MXM slot.

No idea about your GPU. I know that every Pascal GPUs have the BACKLIGHT pins working. The brightness depends, it can be controlled thru the laptop's motherboard. For my laptop, it's outside the MXM card. It's called BRIGHTNESS_R with one resistor. Your issue is maybe due to a vbios configuration. You need eDP on DP_D since most or "every" Pascal VBIOS has the eDP port declared in the vbios.

Yes, the multi-layered PCBs.

I contacted ZRT, X-VSION to bring back the backlight supports, they didn't seem to care at all! So I stepped in!

Hello everyone! Do you want to upgrade your old laptop MXM GPU? But you can't since the newest RTX Turing, Ampere and Ada aren't working with your eDP display? I have the solution for you! The backlight mod to enable eDP display for your MXM card! Finally the mystery was resolved on why these cards don't display in our eDP laptops. Every cards from Turing to Ada generation, from brands like Aetina, Adlink, PNY, ZRT and X-Vsion will work with this mod! What was the issue with these cards then? They were all lacking 3 essential pins. These pins are used to power on the panel. They are called backlight pins! Without them, your screen stays black, even if you have eDP or DP signal in the right video port. The solution: Making a solder-less mod, a flex FPC cable that allows to power the 3 backlight pins with ease! The 3 backlight pins are set in 23, 25 and 27 pins of the MXM slot and the MXM card. What we're trying to do is to power the backlight pins using the 3.3V from the pins 278 and 280, that's it! The flex cable is going to be insulated and will be able to handle high temperatures! I'll use double-sided insulated tape for the back side of the backlight pins, to secure the installation. Where can I get one? You might ask. It's in production right now, I'll test the cables if they work and I'll sell them to you! Price: Soon We can finally have an RTX 4080 or an RTX 4090 in the master slot of the MXM and output thru the main eDP display! Clevo P870 with dual RTX 4090? P570WM with an RTX 4090?! P775 with an RTX 3080 Ti?! Will work with (for MXM slot that allows eDP or DP on DP_D and cards that lack the backlight pins) RTX A3000 (XVSION), RTX 3060, RTX 3070, RTX 3070 TI, RTX 3080, RTX 3080 Ti (ZRT, X-VSION) RTX 4050, RTX 4060, RTX 4070, RTX 4080, RTX 4090 (ZRT, X-VSION) RTX 3500 Ada (Aetina), RTX A4500, RTX 3000, RTX 4000, RTX 5000 (Aetina, PNY, Adlink) (Tell me if I forgot some cards) Disclaimer! This mod can work with laptops that have the eDP set to DP_D and has the backlight pins assigned in 23, 25 and 27 pins in the slot. The BIOS of the laptop shouldn't have any whitelists. After a lot of research and some testing with soldering, that's the conclusion to the solution! Thank you!

New custom heatsink for the P570WM! Will arrive soon to me. I have 3 of them available, if someone wants to buy one, let me know. Compatible for the MXM cards with centered die! Such as RTX A3000,3060,3070,3070 Ti,3080, 3080 Ti,A4500,4080,4090 from X-VSION and ZRT! Up to 175W of heat compatibility! 4 heatpipes for the GPU cores and aluminium cooling for the VRAM/VRM!

They are offline for weeks

Yes

Hello. It's late I know. These cards from Aetina, ZRT and X-VSION aren't working with eDP laptops screen, despite having eDP or DP on port D. You need to mod your MXM slot to bring back something. You see, the screen needs to get started in order to display something and the backlight isn't on... You need to mod and make the backlighting work again. These cards work on Optimus too.