The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    VGA on LCD is flickering

    Discussion in 'VAIO / Sony' started by enter260, Jul 5, 2010.

  1. enter260

    enter260 Notebook Consultant

    Reputations:
    1
    Messages:
    135
    Likes Received:
    0
    Trophy Points:
    30
    I have a Sony Vaio Z11 and I'm noticing flickering when connected via VGA to my LCD (Samsung 19'' 1280X1024). I tried the VGA connection at work (22'' Acer), and I also saw flickering. My other devices with VGA seemed to work perfectly, so I ruled out the possibility of a defective monitor or cables.

    What could be the issue?
     
    enter260, Jul 5, 2010
    #1
  2. zerni

    zerni Notebook Enthusiast

    Reputations:
    0
    Messages:
    19
    Likes Received:
    0
    Trophy Points:
    5
    Take a look at the lan cables. Maybe they are insufficient insulated.
     
    zerni, Jul 5, 2010
    #2
  3. enter260

    enter260 Notebook Consultant

    Reputations:
    1
    Messages:
    135
    Likes Received:
    0
    Trophy Points:
    30
    No lan/ethernet cables are connected.
     
    enter260, Jul 5, 2010
    #3
  4. arth1

    arth1 a҉r҉t҉h

    Reputations:
    418
    Messages:
    1,910
    Likes Received:
    0
    Trophy Points:
    55
    Your external monitor might not like the 59 Hz (NTSC video compatibility) refresh rate. Switch it to 60 Hz and see whether that helps.
     
    arth1, Jul 5, 2010
    #4
  5. enter260

    enter260 Notebook Consultant

    Reputations:
    1
    Messages:
    135
    Likes Received:
    0
    Trophy Points:
    30
    it's running at 60 hz and still flickering. my desktop has no problems with this lcd. could this be a defective vga out on my z?
     
    enter260, Jul 5, 2010
    #5
  6. enter260

    enter260 Notebook Consultant

    Reputations:
    1
    Messages:
    135
    Likes Received:
    0
    Trophy Points:
    30
    Update: I notice that when I plug in the power for my laptop, I get the flickering. Is this poor grounding or something?
     
    enter260, Jul 5, 2010
    #6
  7. H.A.L. 9000

    H.A.L. 9000 Occam's Chainsaw

    Reputations:
    6,415
    Messages:
    5,296
    Likes Received:
    552
    Trophy Points:
    281
    When you plug your notebook in, does it automatically switch power plans... a la balanced to performance?
     
    H.A.L. 9000, Jul 5, 2010
    #7
  8. enter260

    enter260 Notebook Consultant

    Reputations:
    1
    Messages:
    135
    Likes Received:
    0
    Trophy Points:
    30
    enter260, Jul 5, 2010
    #8
  9. PAugust

    PAugust Notebook Enthusiast

    Reputations:
    0
    Messages:
    29
    Likes Received:
    0
    Trophy Points:
    5
    Too bad to hear this flickering problem in Z11 when I almost decide to buy a Z12. It is like my ASUS tablet and the external LCD is flickering whenever the ASUS is on AC. Could anyone check whether this problem is also present in Z12 or not? I suffered this problem with my ASUS tablet for 3 years, and was hoping that a new Z12 will solve this issue.
     
    PAugust, Jul 5, 2010
    #9
  10. enter260

    enter260 Notebook Consultant

    Reputations:
    1
    Messages:
    135
    Likes Received:
    0
    Trophy Points:
    30
    Most likely the Z12 is affected. Another remedy to this problem is use DVI/HDMI. I think only VGA is affected by this flickering.
     
    enter260, Jul 5, 2010
    #10
  11. PAugust

    PAugust Notebook Enthusiast

    Reputations:
    0
    Messages:
    29
    Likes Received:
    0
    Trophy Points:
    5
    Are you sure HDMI will not have this problem? My LCD monitor does have an HDMI port to work with Z12's HDMI port. I can't try this on my ASUS tablet as it only has a VGA output.
     
    PAugust, Jul 5, 2010
    #11
  12. enter260

    enter260 Notebook Consultant

    Reputations:
    1
    Messages:
    135
    Likes Received:
    0
    Trophy Points:
    30
    i don't recall getting this problem on hdmi out, but i don't have a cable to test at this moment.
     
    enter260, Jul 6, 2010
    #12