I just updated all the drivers associated with the display, which included the monitor driver and the graphics/video card driver. However, I still seem to be having the same issue with the flickering horizontal lines.
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Dell S2209W LCD Monitor - flickering horizontal lines
Hello,
I just purchased a new Dell S2209W LCD Flat Panel Monitor. It is full HD 1920x1080 resolution. I am using it as an external monitor to my Dell Inspiron 5150 laptop (with an ATI Mobility Radeon 9000 graphics card). The monitor is connected to my laptop using VGA input.
The problem is that horizontal flickering lines are showing up on the external LCD. Everything else looks fine, and the picture is extremely sharp, as I would expect. It's just that these horizontal lines flicker across the entire length of the screen, and move from the bottom of the screen to the top, with about an inch between each of them. They are fuzzy and hard to see on a white background, but easy to see on darker backgrounds. They look similar to the kind of horizontal lines you might see moving vertically on a TV whose signal is a little bit off.
My graphics card drivers are fully up to date. Also, I checked my display settings, and this particular monitor requires a 60Hz refresh rate - it makes this explicitly clear when trying to change this setting. So it is set to 60Hz, and cannot be changed from this. Finally, the actual laptop LCD display does not show the horizontal lines, and displays perfectly fine. I also tested on an external CRT monitor, and this does not show any lines either. Only the new external LCD monitor has the horizontal lines.
Please let me know if you have any ideas. Thanks.
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Answers
Thanks all for the feedback. My laptop only has VGA out, so I was unable to test the DVI with my laptop. However, I did test the external monitor's DVI using a separate desktop machine that has DVI output, and in that case I did not get any horizontal lines. In fact, the picture was flawless. So this issue only seems to be happening with the VGA signal.
As far as the plug, the monitor and laptop are both plugged into the same power strip.
The monitor is designed to take either VGA or DVI input, so I would think that it could handle the VGA just as well as the DVI.
My laptop is a bit older - Dell Inspiron 5150 from 2003. It has a 64 MB ATI Radeon 9000 graphics card. So I am wondering if this might have something to do with my laptop? Any other ideas of what this could be?
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by: nobusPosted on 2009-06-19 at 00:49:24ID: 24664457
try updating the video driver