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Gigabyte GA-MA780G-UD3H - VGA problem

Discussion in 'Motherboards & Memory' started by VegaX, Jun 23, 2009.

  1. VegaX New Member

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    Hi to all, i'm new of the forum :)

    I have a VGA video problem with my motherboard Gigabyte GA-MA780G-UD3H (rev .1.0). I have intalled Windows XP SP2 and Ubuntu Linux in live whith no hard disk connected.
    Sometimes during startup windows vibrates and at the start UP of the system there is a green refreshing line 1 cm high on the top as visible down:

    [​IMG]

    PC configuration:
    - Gigabyte GA-MA780G-UD3H(rev .1.0)
    - CPU AMD 720
    - Memory Brand : Corsair DDRII 800 2x2Gb
    - Power Supply : 500 W

    I have recorded the problem whit a digital camera and I have put the video on youtube, look at VGA problem

    I have tested the system with other four LCD but sometimes the problem comes out.

    I have change two motherboard and the problem persists !
    What i can do? :banghead:

    thanks to all
  2. peterzui New Member

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    Hi VegaX,

    I am probably having the same problem with this mobo.
    An unstable videosignal out of the onboard DVI output.
    Did you get any new information or even a solution ?

    Any help is appreciated.
  3. erocker

    erocker Super Moderator Staff Member

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    Did you install the latest graphics drivers?
    skylamer says thanks.
  4. peterzui New Member

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    graphic drivers

    All drivers instaled are the newest ones.
    However, instability persists.

    Plan to try the plasmascreen on the HDMI to
    exclude bad DVI or/and monitorbehaviour.
  5. peterzui New Member

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    further tests

    Connected Pioneer plasma tv screen via HDMI-HDMI cable to the motherboard, picture was stable with all modi. !!
    Tried another monitor LCD screen via DVI---> unstable with all modi
    Tried monitor LCD screen with D-sub-D-sub cable ---> stable with all modi
    Tried monitor LCD screen with another DVI-DVI cable ---> stable with all modi.

    After this, I thought the DVIcable might be the weak link; however videoscreen became instable again.
    At this moment I am using the D-sub-D-sub connection and it is stable.
    fingers crossed........

    Still have no clue what's causing the instability.

    Any further suggestions,.. anyone ?

    Peter
  6. Crev New Member

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    I was having this exact same problem with a newly purchased MA780G-UD3H with the monitor plugged into D-Sub.
    In post and other "dos" screens, the video was fine but as soon as Windows started installation the flickering and refreshes of the monitor started and continued..

    I played around with the Onboard VGA Output Support option in the Advanced Bios section of the bios.
    Eventually, setting it to D-Sub/HDMI solved the issue and the output is now stable.

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