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GuitarG

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  1. GuitarG
    Well, Dreamcolor is LVDS screen, on DC cable there is pin 11 and 12 connected, those are LVDS EDID cables. They go straight to DC LCD. So at the end of the day, every panel in 8570w is LVDS. EDID hexcode for LVDS and eDP are vastly different, even in length. And they are two totally different technologies. So I think only way could be to find out with coreboot rom. But since it uses a lot of original HP code, it still may not work. Unfortunately.
  2. GuitarG
    Yup, there: With crimping plies you could probably make it into JST, I didn't had one so I just soldered one wire. Remember to solder it after coil, not before, or you will fry PWM fan IC. 5V I used from SATA bay port. About modification, there is a little hope left. I think HP may had whitelist of panels that will work in that laptop 😞 and it's in encrypted bios. So I will try one last idea, coreboot 8560w and check then if work. But I don't get my hopes high because even coreboot uses some propertiary manufacturer code for it to even work. And even if it works, then no Windows booting, only Linux.
  3. GuitarG
    After F40 or F41 bios update no more WLAN whitelist on 8570w. Latest is F71. Only WAN card is whitelisted. Only known (for me) MXM gpu whitelist are in lenovo thinkpads workstations.
  4. GuitarG
    Sure ! That was FHD LCD, and thanks! No, only 8560w. 8770w is very rare "pokemon" in my place. And cost waay too much, like 300-400$. With MXM cards, if it fits heatsink, then it is matter of correct vbios, which you need to find out yourself, propably. Or look for info in NBRChive (old forum) --- About eDP Panel! Some good news, some bad. Good is my 4K cable works ! Panel is damaged, though. But I saw backlight working and content (bios logo). Bad news is those cable work only without installed GPU drivers. Also UEFI is a must, otherwise LCD won't even turn on. I experimented on spare HP and I could set up even FHD resolution, but after installing drivers laptop don't even shows internal panel connection. Only external output works. This is problem I had in my Clevo before, I tried to upgrade screen to 4K and it also worked until installing drivers. Seems like I need to troubleshoot another problem. I heard about EDID, now I need to check out how to program them or something.. So we're halfway to success...
  5. GuitarG
    What 27 dollars can give you.. now fun begins!
  6. GuitarG
    Yes, FHD max. I tried to use 40 pin with 4K, but it didn't light up. It may be soldering error, though. Need to check again with multimeter. Thanks 😄 I need to do mine first, haha. Goal is to make that 4k work. Since I tried it at my workplace, I didn't had time to check everything (like brightness control, etc). I really hope for that spare HP, it would make work much easier (yup, trying my luck at yet another bargain auction).
  7. GuitarG
    BINGO
  8. GuitarG
    I have both 30 pin and 40 pin schematics, they're pretty standard. It also checks out that 4K screen with touch screen capability have separate flex cable for touch, separately from 40 pin LCD. Why I know ? Because I have such screen from tablet Zbook 🙂 EDIT: for 1080p we need only 2 pairs + aux channel in eDP, that is 30pin one is used for. For 2k-4k we need correspondingly 3 pairs + aux and 4 pairs + aux. That's why I made another cable for 30 pin, because I needed to solder a lot less cables, easier on myself. Just to check out if my mod would work. Dreamcolor uses all of lanes because it is 8 bit conversion to 10 bit, but with 1080p resolution. For same resolution output in LVDS (compared to eDP) you need twice as much lanes. eDP FHD takes 2 pairs + control channel, LVDS takes 4 differential pairs + control channel. Thanks to AstroMan helping hand, we are figuring out what I missed. When I was writing answer to why it is not working and I don't have ideas, I had such code programmer duck moment ..! I have hypothesis to check, I may had mistaken LCDVCC to be panel supply line. My theory is to connect panel supply pins to +3.3V line instead of LCDVCC - I think it is just signal from MXM connector, it was used only in LVDS technology. But we all, you and me, have to wait till monday for next part of my troubleshotting... I took my modded cable but forgot to take eDP panels from job place 😞 so we wait till monday for news - do I fry my lovely HP or does it work. I lost yet another low cost HP auction. And spare board died out of nowhere, no idea why. BTW: having steam deck OLED I am tempted to make 32GB ram mod on it. It seems so easy, because I would need to change only two RAM chips. And would love to share process here, what do you think ? 😄 I have only little board heater and Quick hot air station, but that was enough for Clevo chipset change. My only concern are my hands, since I have "heavy" carpal tunnel in both and my next appointment is early october. But two chips instead four seems easy!
  9. GuitarG
    I *sacrificed* my dreamcolor cable to check pins used. I share here, so maybe someone may figure out what I missed. I'm investigating myself now. X next to pin is from motherboard to LCD cable. Also, for future, P/N for 8560w dc cable is 350406400-11C-G
  10. GuitarG
    Here is my pinout. GND is connected to metal body on both ends. Right paper is pinout for connector on laptop board. On left is standard 30 pin eDP output with my hadwritten numbers corresponding pins from mobo connector. Im looking for DC cable for 8560w/8570w from motherboard to dc board. I need to see pins used to compare with mine. As for slice battery, you need to cut it. Mine was heavily glued together, needed a lot of force.
  11. GuitarG
    Well, I had tried simpler, 30 pin cable with 6 different LCDs. No backlight, no initialization, no content on any LCD. Zero ideas why it's not working..
  12. GuitarG
    99% EC code sets power limits and which charger would be recognized. If I've been in same shoes, I would cut off traces from docking station (power lines, load measuring) and made second barrel for second charger connected to GPU only. This way laptop gets 230W for CPU and as much as you want for GPU.
  13. GuitarG
    A lot of free time + boredoom at job = me reparing not working motherboard for parts. Unfortunately, 40pin cable didn't worked. Not sure why, LCD may be broken or I missed something important. Fortunately, I have another cable, Im gonna try make much simpler 30pin cable. I have about 10 eDP 30pin LCDs, so we will be sure this time. D channel DP driver G6 eDP
  14. GuitarG
    Cable ready! Now waiting for spare 8570w = ) unfortunately, I had lost another auction.. (Those not connected cables aren't needed)
  15. GuitarG
    Read my whole topic for more info. For MXM B you need to remove DVD connector, dremel a bit of protrusion in case and remove one keyboard mount. It is also recommended to use part of heatsink from 8770w or another laptop. EDIT: About RTX cards, those from HP Zbook needs few steps more, look up in thread 🙂 Of course ! Sorry I forgot to insert it here 40 pin is needed for 4K glory (4 pairs of eDP channels). 30 pin is enough only for FHD (one pair only needed, though) I soldered motherboard side already, in few days my colleague will help me solder screen side. Shaky hands lately 😕 I wonder. Dunno about Dreamcolor cable, but while I was figuring out pin outs, I learnt there are at least two ways to drive brightness control in eDP screens: using AUX channel or PWM output from board. I think Aetina may not have it implemented, though. It is advertised for PC boards, no ?
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