M4800 Owner's Thread

Discussion in 'Dell Latitude, Vostro, and Precision' started by changt34x, Oct 29, 2013.

  1. Vect

    Vect Notebook Evangelist

    Reputations:
    428
    Messages:
    408
    Likes Received:
    12
    Trophy Points:
    31
    Photos 2 _DSC8856.JPG _DSC8858.JPG _DSC8859.JPG _DSC8860.JPG _DSC8864.JPG
     
    ygohome likes this.
  2. Vect

    Vect Notebook Evangelist

    Reputations:
    428
    Messages:
    408
    Likes Received:
    12
    Trophy Points:
    31
    _DSC8865.JPG _DSC8866.JPG _DSC8869.JPG _DSC8870.JPG Photos 3, Screen changed, palm rest changed and chassis changed. Screen is B156HW01 v.4, Old screen was 720p so LVDS cable was changed as well. No problems whatsoever with this screen.
     
    ygohome likes this.
  3. philhalo66

    philhalo66 Notebook Enthusiast

    Reputations:
    0
    Messages:
    14
    Likes Received:
    1
    Trophy Points:
    6
    ok so i replaced the lcd cable and the panel and it worked for about 16 hours and now it's back to only showing an image when the switchable graphics is enabled and in the diagnostics its shoing image in the top 2 inches only and its mirrored stating EDID failure. It has to be the motherboard right? i just dont understand it it worked perfectly with a new lcd panel for a couple hours why would it suddenly stop working again?
     
  4. avdo

    avdo Newbie

    Reputations:
    0
    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    5
    No idea but I've just transplanted a B156HW01 v.4 out of a Lenovo W520 into my M4800 (Quadro K2100) and it's working fine on W10 LTSB for the past 3 weeks.

    Why did you change it in the first place? Just for the upgrade or was the 1st panel non-functional?
     
  5. philhalo66

    philhalo66 Notebook Enthusiast

    Reputations:
    0
    Messages:
    14
    Likes Received:
    1
    Trophy Points:
    6
    Because it was giving me EDID EEPROM failure so i replaced the lcd cable and it didnt fix it so i got a cheap lcd and it did fix it temporarily but its now messed up again.
     
  6. hodgeMN

    hodgeMN Notebook Evangelist

    Reputations:
    32
    Messages:
    366
    Likes Received:
    81
    Trophy Points:
    41
    See this page and the next couple - some 1080p IPS panels do not play nice with the m4800 for some reason and you need to disable switchable graphics in the BIOS to get them to work:

    http://forum.notebookreview.com/threads/m4800-owners-thread.736032/page-176
     
    Last edited: Jun 5, 2018
  7. User32

    User32 Notebook Consultant

    Reputations:
    2
    Messages:
    213
    Likes Received:
    47
    Trophy Points:
    41
    About to buy a M4800 with unknown specs, good idea?
     
  8. alexhawker

    alexhawker Spent Gladiator

    Reputations:
    455
    Messages:
    2,436
    Likes Received:
    731
    Trophy Points:
    131
    How should we know, without any mention of the price?

    Does it work for sure?

    For $5, definitely. For hundreds, probably not.
     
  9. Rippchen

    Rippchen Notebook Enthusiast

    Reputations:
    0
    Messages:
    16
    Likes Received:
    1
    Trophy Points:
    6
    I have one question for the M4800 users which have upgraded their GPU to Maxwell generation. Recently I've updated my M4800 to a K2200M (GM107, 2GB) GPU running on pretty old A09 BIOS but newest NVDIA Quadro driver (inf modded) for having full GPU performance. With newer BIOS versions the GPU will not reach the boost clock due to an unknown reason.

    Everything is working fine so far and according to the nvidia taskbar item for optimus activity it seems that also switching between Intel and NVIDIA is working as expected. But power consumption is still too high. The mininum battery draw I can achieve is around 12W (display at minimum, keyboard backlight disabled). I'm pretty sure with the old K1100M the minimum battery draw was around 7W!

    So I assume the NVIDIA card ist still sucking some juice from the battery even it's logically disabled. Is someone familiar with a situation like that and more important has a solution for me?
     
  10. User32

    User32 Notebook Consultant

    Reputations:
    2
    Messages:
    213
    Likes Received:
    47
    Trophy Points:
    41
    Ended up not doing it because the bezel was cracked on the side, and bought a ThinkPad P50 instead.
     
Loading...

Share This Page