dimanche 14 août 2016

P377sma 4K display Upgrade Waiting for parts to test

So I'm going to try this upgrade for our P377sma/ p375sma laptop.

Physically, it is not the same panel, But With some milling, it gonna fit.
About this, i have to wait my panel to arrive, got some ideas in mind how to fit it in our p37x body... ;)

Actual parameters:
LP173WF2 50PIN==EDP Cable== 15x2 EDP MB

TEST:
B173ZAN01.0 40PIN==Mod EDP==15x2 EDP MB

If we read the datasheet of both display we can see it might be compatible with some little Mod:

LG FHD:
LG display.PNG

AUO UHD:
AUO display.PNG

==> Just a story of joining some "Gound" PINs & "Logic Input Power"
Hopefully, the AUO screen has 2 optional PINS inexistent in Lg display, so not a problem.

I'm waiting the answer of a Chinese who tell me he can build the cable, Just waiting and hope he will accept for a little quantities...
Otherwize, between actual P377 edp cable and W230SS wqhd cable, i will create this connection because qhd cable from w230ss is 40pin from display and p377 edp is 15x2 (30) pin to Motherboard.

The objective of this mod EDP is to imitate the P377sma edp cable with 40 pins instead of 50.

My fears is Actual P377sma edp output 5V and actual AUO UHD is MAx 3.3V. Let's hope this is adjusted automatically.
My other fear is that the panel where i will buy it seem not a legit one.. both Ebay or Taobao are not true AUO panel...So i hope i receive a working unit.

If you got questions or Adjust/refute my theory or to suggest other ways, Lets share our imagination to make it work :)

UPDATE: Working Good

12722456_10153969233139874_809113717_o.jpg

-Setting module at 3.35V and using good connectic, i fix my module instead of the DVD burner. We could keep the dvd burner but i need to have something more little. i tried a little module 5v to 3.3V but it was so warm after a few minute it start to flash black screen. It might work to instal it behind the screen connected with a large heatsink. I will try others options another time.

-To avoid black screen, fix some tape in the 4 'screws zone' of the screen: it will avoid metal ground contact between display and laptop.

I decided personally to not make a tutorial to share with anyone because it is easy to screw the laptop or the display: you have to cut the bottom screw zone of the screen, you have to cut some parts of the top case of the screen, and so on..
But it is fully working, 3 days no more black screen, flickering. To avoid ghost behind dark grey, you have to set light at max 50%. These ghosts picture are temporary, i might have 'burn" this screen while i was using it at 5V i guess.

I share my connectic plans for people who are interested. If you are interested to mod your laptop with 4k, i will explain it by private message but i don't recommend it since 60Hz is really annoying for game, you can play at 4k with single gtx980m at medium/high settings without filters, you will have 60fps.
Battery no last too long. i use 150% scaling when a friend prefer 200% instead. Don't forget in nvidia panel to set 8bpc.

-The Clevo hot keys FN+F8/F9 will not work even with this astuce. To allow brightness control from windows tools or hotkey software, you have to create a reg key at:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\
Search for Nvidia then add a reg_dword EnableBrightnessControl with a value of 1
Restart then you can control brightness

Connectic schemas:
plan schema (1).jpg
plan schema (2).jpg

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P377sma 4K display Upgrade Waiting for parts to test

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