Does the Clevo X7200 have a GPU whitelist for the MXM master slot?

[SuperMG]

Hello.

 

I've been intrigued a lot about why anything above GTX 680M Kepler won't work on this LVDS X7200 laptop?

 

For example Quadro K3100M, GTX 780M, 880M, 970M, 980M won't work in the master slot, despite having the same LVDS port for the internal screen. 

 

These cards do support legacy and legacy oprom.

 

Even I got a GTX 970M, 980M and Quadro P5200 to work in the slave slot! With Legacy and UEFI VBIOSes. The BIOS recognized them as the 2nd NVIDIA GPU. Even the RTX 4070 MXM was detected!!

 

So my point is... There's maybe a whitelist of GPUIDs for the master slot.

 

But some could say that the GTX 700M to 900M needs some partial support for UEFI in order to work and display... Even though these generations support both legacy and UEFI.

 

It's not about the LVDS port. It's about the BIOS.

 

Is there a way to remove the GPU whitelist from that Phoenix BIOS? So we can add a GTX 980M as the best card in terms of LVDS compatibility?

 

I see that the Alienware M17X R3 and M18X R1 could support up to an GTX 780M and GTX 880M for the master slot. Even the 1st gen core i M15X can support up to a GTX 980M...

 

Any bios modders? Prema? Svl7? Baked?

[SuperMG]

The M15X is from 2010, uses the same first gen core i technology (45nm and 32nm) as the X7200 and it's able to use the GTX 980M or Quadro M5000M as the master card without any Intel Optimus.

 

The M15X didn't have UEFI too, it's full LEGACY.

 

So why can't the Clevo X7200 do the same? I'm sure there's a whitelist. A GPU whitelist that was updated when the Kepler 600 series were out.

 

Presumably they added the whitelist because of the newer version from Clevo that was coming out, the P570WM. The P570WM LVDS could allow up to a GTX 980M and the P570WM3 could allow up to an RTX Ada in eDP.

 

Which means that the P570WM doesn't have a whitelist for sure.

 

How can we remove the whitelist? with a BIOS editor?

[panda_zzz]

There is no whitelist for graphics cards. Older Clevo laptops often have issues running non-native graphics cards due to the address of the graphics card's temperature sensor on the SMBus. Possible solutions include replacing the sensor on the card, connecting an external sensor to the MXM slot's pins, or modifying the laptop's EC controller firmware.

[SuperMG]

Well no one knows yet.

 

It could be a BIOS/EC issue actually.

 

The M15X works with Fermi cards all the way up to Maxwell cards in LVDS. 

 

The X7200 laptop could boot even if it can't detect the GPU's temperature sensor.

 

For example, I tried with an AMD card. It displays and boots. Then, after 10 seconds, the laptop started to beep and went into panic mode. At the end the laptop shutdown because of the temperature sensor of the GPU.

 

The slave slot of the X7200, I had no issues with the EC fan controls for the 970M, 980M and Quadro K3100M, no panic, no beeps, fan works.

Edited 11 hours ago by SuperMG