M4800: not all are built the same (LVDS vs. eDP)

[King of Cat 👑]

Hi guy!

 

Today i will talk about M4800.

 

Multi-Prototype:

May be all people don't know or don't care: "M4800 have 2 prototype of Motherboard" <--- it's the dead point that i discovery. 

 

Prototype 1: Dell Motherboard LVDS TRPM M4800 (full lucky):

+ use LVDS for internal Display (with max resolusion is Full HD)

+ can disable Switch Graphics (run only Quadro/Firepro) full performance, full external port.

+ if don't want Quardo/Firepro can run with optimus.

---> Replace Wifi + upgrade WWAN/mSata SSD ----> a monster of Workstation Mobile.

 

Prototype 2: Dell Motherboard EDP TRPM M4800:

+ use eDP for internal Display - eDP full HD / HD+ (not so lucky):

+ can not disable Switch Graphics. (black screen)

+ cannot export sigal to HDMI/DP/VGA

+ internal Display use intelHD 4600

+ Quadro/Firepro can use for any Software use Cuda/OpenGL for render/editor. (can disable Quadro/Firepro by DSDT).

---> Replace wifi + upgrade WWAN/mSata SSD ----> a monstar too ( but smaller than Prototype 1).

 

i'm not sure but may be Prototype 3 for 4K display use DP (don't have intelHD4600):

+ use DP for internal Display - that may be good if can inject monitor by some key or may be bad because don't have intelHD 4600

 

How check:

Use Ubuntu Live:

command is: Xrandr

 

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Check VBIOS

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Use Aida64 report

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Prototype 1: install OSX very very easy.

Prototype 2 (is my M4800): very very easy with enable Switch Graphics. (not talk about it).

let's talking about disbale Switch Graphics! - big issuse with black screen.

 

.... updating......

 

next day i will update more. ...

 

more image, more infomation, and more about same hardware (M6800, Zbook 15 Dream Color, 8570w Dream Corlor, ROG 120Hz 3D screen ... ).

 

thanks for watching.

[sgilbert]

I have the 4K screen,  can get both HDMI / and external DP port to work using the Nvidia Web Drivers, but never the internal display.  I want to tackle this by trying to modify the NVDA configuration but cannot get the correct configuration.

[nsmartin]

The system information in the bios doesn't show two different revisions? Instead of having to boot up linux.

[King of Cat 👑]

linux is failing on this case, bro.
linux is not good at all. 
you must check with VBIOS to known it

[howoarang]

Hi, as I see, you have Dell M4800 with no Switchable graphics option. 
Could you post your BIOS version or Service Tag NO of your mobile workstation?
 
On my M4800 I have Switchable Graphics option, I use latest version of BIOS, it is A16 from here

[sgilbert]

A16

ST 2b2jn32

EST 5022968222

 

eDp connector to built in 4K display

[howoarang]

OK. I think, that BIOS A16 and also the older versions are the same for both types of M4800 motherborad.

 

So now, how the Mac OS works on your M4800? It is possible to run only with external monitor? And your internal 4k display doesn't work?

[sgilbert]

Yes, but i've been trying to get the internal screen working.

[howoarang]

OK, let us know about your research. thanks

[joperez]

Hi!

 

I have just that same issue. My M4800 doesn't have Nvidia Optimus option and I have the QHD+ screen. Sgilbert, could you get the internal screen to work?  Thank you!