Ghosting/Burn-in issue with new alu displays

Discussion in 'Macintosh Computers' started by blutfink, Aug 26, 2004.

  1. macrumors newbie

    Joined:
    Jun 23, 2004
    Location:
    Cologne
    #1
    Don't know if there is another thread about this issue in the MR forums. Couldn't find any.

    My brandnew 23" Alu Cinema Display shows a really annoying effect. If I move a finder window (on a dark desktop background) that hadn't been moved for a while, a "ghost" window stays in place -- for several minutes. :(

    I know of at least three threads on this topic on Apple's discussion boards.

    http://discussions.info.apple.com/webx?50@247.aYYNaYXmuRj.1@.689928d1

    http://discussions.info.apple.com/webx?13@247.aYYNaYXmuRj.1@.6897b945/15

    http://discussions.info.apple.com/webx?13@247.aYYNaYXmuRj.1@.6897b945/8

    Does anybody not have that problem?

    [Update: It does not happen with a totally black background! Try a dark (25%) grey. I'm still experimenting.]
     
  2. macrumors 601

    stoid

    Joined:
    Feb 17, 2002
    Location:
    So long, and thanks for all the fish!
    #2
    From what I've heard the new Apple monitors have little or no ghosting. What you have sounds pretty serious. You may have gotten a lemon. Give Apple a call and they will probably replace it for free.
     
  3. macrumors 68000

    Joined:
    Jan 8, 2003
    #3
    A few people have reported this issue on the Apple boards.

    Call Apple and get a new one.
     
  4. thread starter macrumors newbie

    Joined:
    Jun 23, 2004
    Location:
    Cologne
    #4
    It's not just my panel

    I hate to say this, but today I was able to reproduce the error on two other 23" HD Cinema Display panels in two different shops. In both cases I reported this issue to the staff and they were quite shocked. So I'm quite confident now that this is a more general issue with the new panels, and I wonder if Apple is aware of the problem. I have yet to try it on a 20".

    That is really disappointing. Well, the effect is weak. But at this price point, it's unacceptable. :mad:
     
  5. macrumors 68000

    AliensAreFuzzy

    Joined:
    May 30, 2004
    Location:
    Madison, WI
    #5
    Maybe it's certain people that use it. I mean, if it didn't happen before in those shops, maybe you (and those other peole on Apple's board) are cursed.
     
  6. thread starter macrumors newbie

    Joined:
    Jun 23, 2004
    Location:
    Cologne
    #6
    But are the panels now cursed, too? And does that qualify for Apple Care? :D

    Well... I encourage everyone to try it out themselves. The easiest way (I think) is to open the Terminal app and set the window background color ("Window settings..."->color) to a dark green (RGB: 0%,25%,0%). Then zoom the terminal window to full screen and leave the color chooser window on top for a few minutes. Then drag it away.

    [edit: or use this [mac.com] page as a background.]
     
  7. macrumors 68000

    AliensAreFuzzy

    Joined:
    May 30, 2004
    Location:
    Madison, WI
    #7
    Well, I think that falls under Acts of God. So I dont' think so. :p
     
  8. macrumors 68030

    crazzyeddie

    Joined:
    Dec 7, 2002
    Location:
    Florida, USA
    #8
    I just tried it on my Powerbook to make sure it wasn't a general LCD problem... but it doesn't appear to be.
     
  9. macrumors regular

    Joined:
    Jul 6, 2004
    Location:
    New York
    #9
    No problems here...

    The only problem is that most people who don't have any trouble with the displays are too busy using them to tell people that they're working perfectly.

    I tested my 23" HD Display with my dad's 15" 667MHz Ti DVI, I saw now dead pixels, brightness/contrast inconsistencies, ghosting, or even the sparkles issue that people said they saw with 15" powerbooks.

    Now I just need to wait for my G5 so i can use the damn thing full time.

    Good luck with your problems, guys.
     
  10. thread starter macrumors newbie

    Joined:
    Jun 23, 2004
    Location:
    Cologne
    #10
    Black

    I just found out that it works even better with black things on green background, even though the "ghost" image is a lighter green.

    I changed the demonstration page [mac.com] to exploit this.
     
  11. thread starter macrumors newbie

    Joined:
    Jun 23, 2004
    Location:
    Cologne
    #11
    Thanks for checking. This means that either this is a problem with the G5 built-in Radeons in combination with these displays (which is unlikely, since it is a digital connection) or it's just some lemon panels. Every Alu 23" I have seen so far (three of them, at different sites, all in combination with a dual G5, though) had this problem. :confused:
     
  12. macrumors regular

    Joined:
    Jul 6, 2004
    Location:
    New York
    #12
    Yeah, my bet is with the GPU's and if thats so, it should only take a driver update to fix.

    Does it happen with both the 9600XT's and 9800XT's?
     
  13. thread starter macrumors newbie

    Joined:
    Jun 23, 2004
    Location:
    Cologne
    #13
    I can confirm that it happens with my 9600XT. I'm not sure about the other ones in the stores, but I'd say those were stock systems (9600).
     
  14. macrumors regular

    Joined:
    Jun 6, 2002
    #14
    I don't think it's the card or the tower...I'm having the same problem with my 12" pbook RevC and a new 23" Cinema HD
     
  15. macrumors newbie

    gismap

    Joined:
    Aug 30, 2004
    Location:
    Seattle
    #15
    My 23hd has been on since April 2002 and it's worked perfectly in every way (and no dead pixles). Yes, I too notice that when the background is set to "dark grey" I'll get a ghosted edge of a window that I just moved. Defect? I think not, since changing the desktop to black or any other color avoids this. Also websites with bg color #666666 has the same issue.
     

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