Why my Dell 2407 display shadow?

[mfcboy]

my laptop is T42 8ZU, and I downloaded omega driver(thanks to those fellow's help in this forum). now displaying graphic thing are much better than laptop's LCD for sure:) but When I browse the website(In firefox or IE,but it doesn't appear text shadow in MS word)and all windows' menu text appear shadow . I set the Image Mode from multimedia to desktop, now the shadow problem looks better, but still not that clear compared to my T42 original LCD. how can I completely fix this problem? thanks.

Sorry about that, I think I found the solution to this problem:
go to menu "display settings", then select "Phase". adjust when you feel good(I set to 60), exit menu, done.

[pianowizard]

Another thing is, are you setting the resolution to 1920x1200? Also, pressing the "Auto adjust" button might help.

[awolfe63]

Could be a cheap VGA cable.

I had never used anything but DVI on this monitor before because of this problem - but I just tried a high end VGA cable and it looks pretty good. Not quite as good as DVI - but good enough to not be annoying.

Also - if the refresh rate is not 60Hz - these monitors will shadow.

[mfcboy]

Another thing is, are you setting the resolution to 1920x1200? Also, pressing the "Auto adjust" button might help.

yeah, I set to 1920x1200 and did press "auto adjust" button,but nothing helped. but now I fixed this problem through adjusting the "Phase" level, thanks.

[mfcboy]

Could be a cheap VGA cable.

I had never used anything but DVI on this monitor before because of this problem - but I just tried a high end VGA cable and it looks pretty good. Not quite as good as DVI - but good enough to not be annoying.

Also - if the refresh rate is not 60Hz - these monitors will shadow.

my refresh rate is 60hz and I am using a factory VGA cable, after I adjusted the "phase" a little bit, now everything looks pretty good now. I haven't compared the DVI quality though. thanks anyway.

[awolfe63]

I don't know what you mean by a factory VGA cable - but you really need a top-of-the line cable to get a good picture at 1920x1200. Heavy wire, good shielding, and ferrite cores.

[independent]

A little note to add about DVI and VGA. DVI has a fixed bandwidth and IIRC according to the specification it doesn't have enough to properly display 1920x1200 32bpp 60Hz. VGA doesn't have fixed bandwidth hence it works well at 200mhz or however much the frequency it's required to work at.
Regarding the VGA cable, I have several lying around and tried them all out and a couple of them are quite substantial ferrite cores and the works. It worked out that the one which came with the screen works the best even though it looks a bit weedy.
HTH

[mfcboy]

A little note to add about DVI and VGA. DVI has a fixed bandwidth and IIRC according to the specification it doesn't have enough to properly display 1920x1200 32bpp 60Hz. VGA doesn't have fixed bandwidth hence it works well at 200mhz or however much the frequency it's required to work at.
Regarding the VGA cable, I have several lying around and tried them all out and a couple of them are quite substantial ferrite cores and the works. It worked out that the one which came with the screen works the best even though it looks a bit weedy.
HTH

well, how can i get DVI to apply when my laptop doesn't have DVI connection? DELL 2407 does support DVI though. Do i need to get a used dockII? is that worth money and time?

[awolfe63]

Port replicator, minidock, or dock II.

I couldn't work all day without DVI. BTW - although DVI does not officially support 1920x1200 - all the monitors and systems support a modified video timing (less time between frames) that works fine.

I have an extra dock II - PM me if you are interested in acquiring.

[mfcboy]

Port replicator, minidock, or dock II.

I couldn't work all day without DVI. BTW - although DVI does not officially support 1920x1200 - all the monitors and systems support a modified video timing (less time between frames) that works fine.

I have an extra dock II - PM me if you are interested in acquiring.

what does that mean, DVI doesn't support 1920x1200 officially?

[GomJabbar]

my laptop is T42 8ZU, and I downloaded omega driver(thanks to those fellow's help in this forum). now displaying graphic thing are much better than laptop's LCD for sure:) but When I browse the website(In firefox or IE,but it doesn't appear text shadow in MS word)and all windows' menu text appear shadow . I set the Image Mode from multimedia to desktop, now the shadow problem looks better, but still not that clear compared to my T42 original LCD. how can I completely fix this problem? thanks.

Sorry about that, I think I found the solution to this problem:
go to menu "display settings", then select "Phase". adjust when you feel good(I set to 60), exit menu, done.

Here is a solution for removing shadows under text. I am not sure if this is what mfcboy is talking about or not.
Removing the shadows under the text on Windows XP desktop icons?

[awolfe63]

Snipped excessive quoting

what does that mean, DVI doesn't support 1920x1200 officially?

Most DVI communications happen by sending the digital data at the original old-school analog/CRT timings where there were allowances for the electron beams to return to the beginning of the line and top of the screen. Originally, DVI was supposed to work with tube-based high-res displays as well as flat panels. The 1920x1200 timings from the analog days make the bit rate too high for DVI when a line is being sent. Of course LCD's don't care about beam time and they retime all of the pixels anyway - so a scheme that is not CRT compatible was created with Reduced Blanking Intervals where the bits are more spread out to use the empty time between lines. I don't think it is part of the DVI spec - but it is widely supported.

[mfcboy]

Snipped excessive quoting

Most DVI communications happen by sending the digital data at the original old-school analog/CRT timings where there were allowances for the electron beams to return to the beginning of the line and top of the screen. Originally, DVI was supposed to work with tube-based high-res displays as well as flat panels. The 1920x1200 timings from the analog days make the bit rate too high for DVI when a line is being sent. Of course LCD's don't care about beam time and they retime all of the pixels anyway - so a scheme that is not CRT compatible was created with Reduced Blanking Intervals where the bits are more spread out to use the empty time between lines. I don't think it is part of the DVI spec - but it is widely supported.

all in all if I have dockII, technically, I can make my present DELL 2407 display at 1920x1200 much better with DVI cable than with my current VGA cable. is that correct? if yes, send me pm about ur DockII's condition and price:) thanks.

[mfcboy]

Snipped excessive quoting

Here is a solution for removing shadows under text. I am not sure if this is what mfcboy is talking about or not.
Removing the shadows under the text on Windows XP desktop icons?

Although it was definitely not about this issue, thinks.

[awolfe63]

Snipped excessive quoting

all in all if I have dockII, technically, I can make my present DELL 2407 display at 1920x1200 much better with DVI cable than with my current VGA cable. is that correct? if yes, send me pm about ur DockII's condition and price:) thanks.

Yes - this is what I do. (I assume you mean with a T42)