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Kevlarstar
10 Posts
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25783
April 25th, 2007 22:00
Strange Dell 2407WFP problem...NEED INPUT!!!
Here's the scoop:
P4 @ 2.6GHz
ASUS P4P800
1GB PC-3200 DDR
9700PRO
Running the screen at native resolution (1920x1200) using a DVI cable and randomly the screen would become distorted (blue/yellow horizontal flashing lines across the entire screen/blinking pixels). This occurred when browsing the net. When scrolling down the page, these abnormalities move with the page, therefore it didn't seem like a problem with the monitor but rather a rendering problem with the video card. When minimizing the browser, the desktop however appears normal. Opening another IE window, the same area of the page had the same issue. To make matters even stranger, when you shut off the monitor and then turn it back on, the page is displayed properly and the lines/blinking pixels are gone. This would leave one to believe that it is a monitor issue. No change when connected through VGA.
What could the problem be due to? Video card or monitor? Keep in mind that this happens randomly.
Thanks.
P4 @ 2.6GHz
ASUS P4P800
1GB PC-3200 DDR
9700PRO
Running the screen at native resolution (1920x1200) using a DVI cable and randomly the screen would become distorted (blue/yellow horizontal flashing lines across the entire screen/blinking pixels). This occurred when browsing the net. When scrolling down the page, these abnormalities move with the page, therefore it didn't seem like a problem with the monitor but rather a rendering problem with the video card. When minimizing the browser, the desktop however appears normal. Opening another IE window, the same area of the page had the same issue. To make matters even stranger, when you shut off the monitor and then turn it back on, the page is displayed properly and the lines/blinking pixels are gone. This would leave one to believe that it is a monitor issue. No change when connected through VGA.
What could the problem be due to? Video card or monitor? Keep in mind that this happens randomly.
Thanks.
724
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Posted April 25th, 2007 23:00
Did you try another cable? At least you eliminate the possibility before you spend hours on complex troubleshooting :)722
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Posted April 25th, 2007 23:00
It could also be the DVI cable. Ensure the connections are good too.724
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Posted April 26th, 2007 12:00
I have exactly the same problem with my 30".
The solution I've found is to change the brightness or gamma (with Catalyst tool because I have an ATI card).
My config :
P4P800 E-Deluxe - P4 2,8GHz
Sapphire X1950 PRO 512Mo AGP
Dell 3007 with 1 Dual-link on one connector (2560x1600)
Samsung 204B on the other connector (1600x1200)724
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Posted April 26th, 2007 13:00
Thanks for the reply Adobex.So you do not think I need to exchange my 2407 as it is only a few weeks old?Did it happen very sporadically? A couple times a week tops?724
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Posted April 26th, 2007 16:00
Well, I don't know... How to be sure the pb will disappear with a new screen? I think it's more a pb of compatibility between the card and the screen but I'm not sure.
I also have my screen for only a few weeks, and since I've tuned those parameters, I don't have those lines anymore. And if I put the default settings, the lines come back... That's why I'm not worry about that because I can control the pb.
Me, I have another pb, it is a kind of black blink occuring approximatively once an hour (sometimes more). It is very short, while 1/25s and I think it is because of the screen, because my other screen connected on the same card, doesn't have that pb. The pb, seems to be a lose of synchronisation but why ? I don't know... I continue to test other settings to see if there is an interaction... But all those pb are really annoying. (I didn't talk about my 3 partially dead pixels)
Message Edited by Adobex on 04-26-2007 07:43 PM724
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Posted April 28th, 2007 15:00
Dell actually sent me a refurb monitor to see if the problem still persists and yes I still got those nasty blue flashing lines in the screen!724
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Posted April 29th, 2007 19:00
Kevlarstar,
2 monitors with the same issue. I would say it was the video card.
Message Edited by DELL-ChrisM on 04-29-2007 03:12 PM
DELL-Chris M (old account)
#IWork4Dell
724
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Posted April 30th, 2007 01:00
I figured it was the video card as well but when I changed the video card I still had the issue!!!Can it be a combination of the Monitor/ATI Video Card? Some other problem?256
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Posted April 30th, 2007 21:00
My nasty lines are maybe more specific to my pb, because they have mixed colors and not only blue or any mono color. Then, I think a convergence of signal components levels (RVB + Brigtness or gamma) is not compatible with the screen.
That means probably, either the screen nor the graphic card doesn't respect norms.
And you say, you've tried another card but as you do not precise wich one, I guess it was the same model : ATI 9700 PRO... Then, difficult to be sure that it is or not a graphic card/screen compatibility.
Well, you don't need a powerfull one to test 1920x1200 resolution and confirm or not the lines pb. Maybe someone can lend to you another gc...
Did you installed the Catalyst manager ? If yes, what gives tunings? Do you know there are specific options for high res screens ? If no, why ?
Was the other screen, Dell sent to you, from the same series ? If no, there is less chances the pb comes from the screen.
Kevlarstar
10 Posts
722
0
Posted April 25th, 2007 23:00