Announcement

Collapse
No announcement yet.

can anyone help with enabling UMA on the 9500 XPS board ( LA-J191P ) ?

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    can anyone help with enabling UMA on the 9500 XPS board ( LA-J191P ) ?

    in the mean time I wrote the second link to the chip, placed it and the laptop went on and showed the card.
    Just like before after a reboot the error 43 came up.
    I tried to heat the ram chips and the actual dGPU chiop without success - even with 2 RAM chips less it behaves the same.
    Giving up on making it work, can anyone help with enabling UMA on the 9500 XPS board ( LA-J191P )?

    I have never done this and been trying to understand it from the schematics, but for a beginner as I am it is hard to understand from that.
    Page 15 has some info mentioning UMA and RH6907.

    I cannot find that or RE301 components on the board visually and have no boardview.
    Is it a matter of replacing RE301 with a 130K resistor ?
    There is a note on p15:
    DVT2.1_08:EC read DGPU always high that thermal PL4 error,so it's should control by BOM optoin
    Add RH6907(UMA@) ,change RH516 to DIS@

    Can anyone help me understand how that should be understood and where to find the components ?
    AFAIK, the changing of the RE301 may tell the system it only has onboard GPU.
    Interestingly, both motherboards I have the 43 error with show this message when doing a quick test on boot:

    Thermal : The ( SKIN ) reading (128C) exceeds the thermal limit - Error code 2000-0314 Validation code 87210.

    Perhaps that is what the remark refers to ?

    Any help or guidance is really appreciated, thank you!
    Tags: None
    #2
    Post moved to a new troubleshooting topic as its no longer a bios request. Post a link to the boardview/schematic
    All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

    Comment

      #3
      aha, I wondered what happened . There is a link to the schematic here :
      https://www.badcaps.net/forum/troubl...-9500-la-j191p

      I also noticed some jumpers that can disable the power to the dGPU but I am not sure if that will work as it should.
      Any help is appreciated, thank you!

      Comment

        #4
        I found the attached picture in the schematics that look promising on page 17.

        I am looking help with the following:
        - find where the RH564, RH566 and RH5857 are on the board
        - understand what to precisely change to get UMA properly working ( resistor on/off, specific value etc )

        Thank you
        Attached Files

        Comment

          #5
          Shift
          RH565 TO RH564
          RH5857 TO RH5858
          RH567 TO RH566

          Its almost impossible to locate them on mb without boardview.

          Comment

            #6
            Originally posted by mcplslg123 View Post
            Shift
            RH565 TO RH564
            RH5857 TO RH5858
            RH567 TO RH566

            Its almost impossible to locate them on mb without boardview.
            Thank you! Do you have the boardview ? Or a picture that shows where they are ?

            Comment

              #7
              Originally posted by mcplslg123 View Post
              Shift
              RH565 TO RH564
              RH5857 TO RH5858
              RH567 TO RH566

              Its almost impossible to locate them on mb without boardview.
              are you certain about RH567 TO RH566 ? Isn't that for the Precision model?
              I thought the table meant : H L L where L would be a resistor to ground not from 3.3 V?
              I will see if I can find them on the board.

              Comment

                #8
                I added a picture of the motherboard where UH2 is, this is where all UH2x things are in I suppose? I also added a picture of UE3 .

                Besides the above resistor change and the related question, does the note from P15 apply :
                DVT2.1_08:EC read DGPU always high that thermal PL4 error,so it's should control by BOM optoin
                Add RH6907(UMA@) ,change RH516 to DIS@

                I understand that a resistor needs to be added at RH6907 but what does the second part mean precisely ?
                It seems needed to not have the termal trip and is part of getting an all power good it seems ( if I read correctly ).

                With those changes, could the coil PL900 be removed, together with the dGPU chip ?

                If anyone can point out the mentioned resistors amd also RH6907 and RH516 I would be very happy and can update on progress. I can make more pictures if needed!
                Thank you.

                Attached Files

                Comment

                  #9
                  In the mean time I soldered off a bunch of coils like PL900/901 and the capacitor next to the GPU. Then the BIOS didn't show the dGPU with a name. The diagnostics still show what is in the attached picture ( Skin temp 128 ).
                  Does anyone know if the assumption that that is because of the P15 note:
                  DVT2.1_08:EC read DGPU always high that thermal PL4 error,so it's should control by BOM optoin
                  Add RH6907(UMA@) ,change RH516 to DIS@
                  ?

                  I did this after studying an i5-10300H board that has no NVIDIA chip. I couldn't find any differences in resistors in the places I expected it.
                  I am happy to take another look if anyone can indicate where I should look and make pictures.
                  Otherwise this starts to take a lot of time so I will park it until there is a reply.

                  So still looking for RH6907 and RH516 and instructions on how to make changes to tell EC that there is no dGPU.
                  Any help is still appreciated!

                  Attached Files

                  Comment

                  Previous template Next
                  Working...
                  X