Screen flickering at 70-75hz

BlackHawkBlackHawk Bible music connoisseurThere's no place like 127.0.0.1 Icrontian
edited October 2003 in Hardware
Like the title says. My screen flickers on the lower right at a refresh rate of 70-75hz at any resolution. It's a 17" Dell M781p/M781mm (what display properties says). I normally use 1280x1024 @ 75hz (highest refresh rate at that res). Highest the monitor goes is 1600x1200 @ 60hz. Would it be a monitor, video card, driver or cable problem?

Comments

  • TheLostSwedeTheLostSwede Trondheim, Norway Icrontian
    edited September 2003
    What happens if you force it to use more than 75 hz? Have you degaussed the monitor and/or reseted it to the default values?
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited September 2003
    forcing a higher refresh rate does nothing. It doesn't use it. I've degaussed the monitor and I can't actually reseat it since it's on a small desk. Only thing next to it are some speakers (worked fine for over 4 yrs).
  • TheLostSwedeTheLostSwede Trondheim, Norway Icrontian
    edited September 2003
    With reset, i meant factory settings. There should be a way to do that in the menu.
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited September 2003
    :doh:

    Reset to no avail
  • BDRBDR
    edited September 2003
    You haven't changed to a different video card, have you?
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited September 2003
    Yes. From a GeForce 4 MX 420. Have formated numerous times.
  • BDRBDR
    edited September 2003
    The reason I asked is because I also had one that had a wavy flicker to it. I think it was too close to my speakers or monitor. Something was interferring with it, _even though_ the same speakers and monitor don't bother my other towers that sit just as close. Maybe just a certain sensitivity in that particular card? I don't know, but I switched my card to another tower, father away from the speakers, and it's not giving me any problems now.
    I do want to mention it's also on another monitor though, with a lower refresh rate setting.
  • EnverexEnverex Worcester, UK Icrontian
    edited September 2003
    You dont happen to have a fan nearby do you?

    NS
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited September 2003
    Nope. It may be a UPS I have at the bottom of the desk but I have no place else to put it :( Also the cable is close to my sub although it's been like for awhile.
  • BDRBDR
    edited September 2003
    Black Hawk said
    Also the cable is close to my sub although it's been like for awhile.


    Ahh! You just reminded me that when I was having problems, my video cable was laying on top of my surge protector.

    You might try moving that cable and see if it helps.
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited September 2003
    The monitor cable is laying on the floor behind the sub which is under the UPS.
  • SpinnerSpinner Birmingham, UK
    edited September 2003
    Yeah, sounds like typical power line inteference to me aswell. Just move some things around a bit, speakers included, see what happens. The easiest way to see if it's an environmental problem, just move your monitor into a different room, and then see if the flickering has disapeared.
  • ThraxThrax 🐌 Austin, TX Icrontian
    edited September 2003
    I have the same problem. My monitor is capable of doing all the way up to 2048x1536 at 75Hz, but 75hz flickers terribly on any resolution. The cable is nowhere near a high-power device.
  • edcentricedcentric near Milwaukee, Wisconsin Icrontian
    edited September 2003
    It flickers at 70Hz? and 72Hz? and 75Hz?
    Sounds like external.
    Does the cable disconnect from the monitor?
    Try another cable. If this one got squeezed or bent it could also give rise to distortion.
  • dodododo Landisville, PA
    edited September 2003
    so it doesnt flicker at 60Hz, or >75Hz at a lower resolution?

    ~dodo
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited September 2003
    Flickers at any res.
  • SpinnerSpinner Birmingham, UK
    edited September 2003
    Its got to be external then (unless the monitor really is up toilet bowl creek). Move the monitor out the room and test it. That will confirm what the problem is. Then all you have to do, is figure out what's intefering with the bloody thing.
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited September 2003
    Well I guess it's that time for the line "It worked before". It did. Just recently did I get the flicker. I haven't changed anything on my "desk" (it's a half @ssed metal desk on wheels).
  • CaxusCaxus
    edited October 2003
    Is it like a flicker or more like a jitter? For about the last few months or so my monitor has had a slight jitter to it when i run it at 1600 x 1200 at either 72 hz or 75 hz. Never used to do it. It doesn't have anything to do with the video card either because i've tried other ones.
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited October 2003
    Yeah like a jitter but it's damn annoying. I think the monitor is 3-4yrs old.
  • CaxusCaxus
    edited October 2003
    Black Hawk, its totally an electrical/magnetic interference issue. I just discovered that a hepa filter on the other end of the room was causing my problem. It was like night and day with it on and off.
  • GHoosdumGHoosdum Icrontian
    edited October 2003
    What video card did you change TO? I swapped a Radeon 9500 pro into my secondary rig, and started to see screen flicker... turns out my PSU wasn't supplying the video card with enough juice to put out a clean signal to the monitor. I swapped in a better PSU, and voila!

    So if your graphics card requires a second power connector, take a look at your PSU...
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited October 2003
    GHoosdum said
    What video card did you change TO? I swapped a Radeon 9500 pro into my secondary rig, and started to see screen flicker... turns out my PSU wasn't supplying the video card with enough juice to put out a clean signal to the monitor. I swapped in a better PSU, and voila!

    So if your graphics card requires a second power connector, take a look at your PSU...
    I don't think it's the PSU cause I don't get any jitter at higher or lower refresh rates.
  • GHoosdumGHoosdum Icrontian
    edited October 2003
    Mine seemed to go away above 75Hz because it was flickering almost too fast to see with the human eye. And at 60Hz, the flicker produced bands that were so big you could only see it once in a while.

    Anyway, what video card do you have now?
  • BlackHawkBlackHawk Bible music connoisseur There's no place like 127.0.0.1 Icrontian
    edited October 2003
    9700 NP
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