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Latitude E6400 Owner's Lounge, Part 2

Discussion in 'Dell Latitude, Vostro, and Precision' started by Commander Wolf, Oct 6, 2009.

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  1. Commander Wolf

    Commander Wolf can i haz broadwell?

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    Have you looked at ThrottleStop? I don't think there was ever an official fix...
     
    Commander Wolf, Jun 27, 2014
    #1521
  2. Lostboymir

    Lostboymir Notebook Enthusiast

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    Hello. I am a new owner of a dell e6400 with a intel video card. Recently i noticed a screen flicker in the lowest brightness setting of the display while on battery. I have tried several video card drivers until i noticed the flicker alos in the bios. Then, i was sure yje problem lies in the bios. The laptop came with A19 bios and i upgraded it to A34. But, after i have seen the flicker i thought i should update the bios firmware one at a time, so i did: A19-A20, A20-A24, A24-A25, A26-A26 and so on until the final one, A33 to A34. I still see the flicker. Now i am running A26 bios due to the improvements that says: 6. Minimize dimmest LCD brightness value for E6400 XFR. Althought it is for xfr, it seems to be flicker free, but i have not tested it enough. What can i do to get rid of the flicker on the lowest dim on battery?
    Thank you very much!
     
    Lostboymir, Jul 17, 2014
    #1522
  3. TheStar

    TheStar Notebook Geek

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    When you say you have tried several drivers. Have you looked up what type of video card you have and installed the correct driver from support.dell.com?
     
    TheStar, Jul 17, 2014
    #1523
  4. Lostboymir

    Lostboymir Notebook Enthusiast

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    Of course. E6400 comes with 2 video cards: NVIDIA® Quadro® NVS 160M5 256MB DDR2 and Intel® Graphics Media Accelerator 4500MHD. I have Intel and currently installed 8.15.10.2869 driver version.
     
    Lostboymir, Jul 18, 2014
    #1524
  5. Commander Wolf

    Commander Wolf can i haz broadwell?

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    I think there is a setting in the Intel drivers which slightly dims or brightens the screen under certain circumstances... have you tried looking for/messing with this setting?
     
    Commander Wolf, Jul 20, 2014
    #1525
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  6. Lostboymir

    Lostboymir Notebook Enthusiast

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    I do not know about the setting you reffer to. The think that worries me is the bios flicker. I have seen the flicker in the bios aswell, this is why i asked about the bios. If there is flicker in the bios it means is independent of the windows drivers.
     
    Lostboymir, Jul 20, 2014
    #1526
  7. Temetka

    Temetka Notebook Consultant

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    I would think maybe the LVDS cable is having a fault somewhere.

    You can run the built in diagnostics. I think you push F12 when you boot up and in that menu should be something related to on board diagnostics.
     
    Temetka, Jul 20, 2014
    #1527
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  8. Lostboymir

    Lostboymir Notebook Enthusiast

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    I have run the pre boot on board diagnostics. It found no problems. Although, it did not run lcd brightness test. It said UNAPPLICABLE. I do not know why.
     
    Lostboymir, Jul 20, 2014
    #1528
  9. Lostboymir

    Lostboymir Notebook Enthusiast

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    I suspect this is due to the fact that i ran it on battery, not on AC.
     
    Lostboymir, Jul 20, 2014
    #1529
  10. Lostboymir

    Lostboymir Notebook Enthusiast

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    I run the pre boot diagnostics on AC and still it did not run the lcd brightness test.
     
    Lostboymir, Jul 20, 2014
    #1530
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