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1.5K Posts

August 29th, 2008 19:00

random_gibberi…
 PM (Please don't put your customer number or any other personal information in a post) me your customer info and I'll shoot your rep a note to contact you.

August 29th, 2008 19:00

So much for receiving a updated screen after contacting tech support about lag and sharpness issues.

 

I'm one of two software guys in our group, and I inevitably end up being the one that ends up buying any computers and associated kit.

 

We have a pile of various revisions of the 2407 that everyone seems to be pretty happy with, but the first 2408 we've gotten (paired with a T3400 workstation intended for CAD use) hasn't exactly gone down a storm.

 

It's obviously laggy, even on the desktop. Our machinist hates the monitor, and I probably couldn't put up with it, either. The lag makes even moving the mouse cursor feel soggy, and he says the delay makes him feel drunk when he's working with his Inventor models.

 

To make sure this isn't just something we're imagining, I did the usual lag tests with the stopwatch flash program that's been posted earlier and a digital camera at 1/200 sec. Cloned against a 2407-HC, there's something like 40ms of additional lag in this 2408.

 

The oversharpening of text is also an issue, and is at its worst with black text on light grey backgrounds (like my xemacs setup, for example). I can dial in something that works better with SoftMCCS, but that's not a solution - this monitor may end up migrating to a Linux machine at some point (we're primarily a Linux shop, and this new WinXP machine is one of the few that we have). I don't understand why there is a sharpening control on a digital interface that precisely transfers pixels in the first place, but that's a digression.

 

Worse, the guy I talked to at tech. support had no clue about any oversharpening or lag issues, and stated something to the effect of "we don't normally do this, but since the monitor is new I'll send a replacement".

 

Kudos to him for getting a replacement out so quickly - it was here a couple of days after I contacted him. However, the replacement is the exact same revision and performs identically, The replacement is actually older than our original 2408 - SoftMCCS says week 25 2008 for the refurb, versus week 28 for the original.

 

The digital camera says that both 2408s are identical in lag performance, displaying the same frame at the same time. Both have sharpness settings in steps of 25. Both are therefore the original rev. A00.

 

What I really don't appreciate is the complete lack of a response from the support guy assigned to this particular incident number since then. I know we're not the largest Dell Premier customer in the world, but I do expect a response to an email within 24 hours of sending it (especially as email is supposedly this guy's preferred medium for contact).

 

This isn't the first run-in we've had with Dell's tech. support, either. We got absolutely nothing from them on a particular model of switch that croaks under heavy load. Well, that's not quite true - we did get a really valuable nugget of information from them when we were advisted that Powerconnect 2748's are not supposed to be connected to other switches. Great advice, that. We're now looking at throwing these switches away in favour of the equivalent Cisco. I guess I now know why Cisco can charge more for their kit.

 

I'm at the point where I'm just about ready to pull our group's business completely away from Dell, to be honest.

144 Posts

August 29th, 2008 19:00


@DELL-Jimmy P wrote:

martidi

 

 All monitors coming out of the factory now have the new firmware but there is still a supply chain. Sort of like turning your water on, you have to wait until the cold water in the pipes gets through before it starts getting warm.


Jimmy, I've a question for you.

 

The factory producing 2408 for North America (USA and Canada at least) seems to be located in Mexico.

And indeed, we've reports of users receiveing 2408 with the new firmware (A01) from this factory.

 

But what about the factory for Europe which is located in Czech Republic ?

Do you know if they also integrate the new firmware in newly produced units ?

 

Thank you for your answer: I'd like to reassure my fellows European... ;) 

144 Posts

August 29th, 2008 20:00


@DELL-Jimmy P wrote:
martidi
 I was told the new firmware should have been cut in worldwide at the same time.

Thank you for your answer...

144 Posts

August 29th, 2008 20:00


@Deathray wrote:

Hey, thanks for the response... I think you misunderstand. Perhaps I shouldn't have used the word banding... what I mean is:

 

If I put a blank white screen on the page (about:blank) or paint... the left side looks like a true white, while the right side looks like a greyish colour or off white. I don't believe this should be an issue of gradient banding if I understand it correctly... I don't think there should be any sort of "gradient" present when I'm looking at a solid colour, which is what's happening to me.

 

I put up a white background, or any other solid colour, and I see a gradient with the left side of the monitor showing a bright verison of that solid colour, while the right side of the monitor is showing a darker tone

 

Apologizes for not using the correct terminology, just trying my best to describe what I see when I'm looking straight at my monitor.


What you're describing here is the "brighter left side" problem of the 2408 put to a climax... ;)

This is a known problem with some colors, especially greys. But not with white.

 

Are you experiencing this when looking just in front of your screen or from an angle ?

 

@If you're looking @ an S-PVA monitor (like the 2408) from an angle, you'll indeed notice a gamma/color shift (S-PVA wash-out).

But usually not with white.

 

It's usual for LCD displays to have a brightness variation between right and left side, but it should not be noticeable like you describe it.

 

Maybe you should call tek support.

8 Posts

August 29th, 2008 20:00

Hey, thanks for the response... I think you misunderstand. Perhaps I shouldn't have used the word banding... what I mean is:

 

If I put a blank white screen on the page (about:blank) or paint... the left side looks like a true white, while the right side looks like a greyish colour or off white. I don't believe this should be an issue of gradient banding if I understand it correctly... I don't think there should be any sort of "gradient" present when I'm looking at a solid colour, which is what's happening to me.

 

I put up a white background, or any other solid colour, and I see a gradient with the left side of the monitor showing a bright verison of that solid colour, while the right side of the monitor is showing a darker tone

 

Apologizes for not using the correct terminology, just trying my best to describe what I see when I'm looking straight at my monitor.

8 Posts

August 29th, 2008 22:00

Hi All,

 

I am a Dell UK customer, ordered a 2408WFP on Wednesday which arrived Friday. Model number is OCX268, manufactured in CZ, June 2008. No surprises, it's an A00. I was fully aware I'd probably get an A00, and accepted the consequences of having to continuously contact Dell about it.

 

Here are the issues I'd discovered in the first few hours:

1) Put screen in portrait mode, and rotate the menus using the options. Now press "-" key to bring up Brightness and Contrast menu, all you see is some dots, the menu is corrupted!

 

2) Plugged in a HDMI (on PC) -> DVI (on Dell) cable, booted up my PC, monitor enters power save. Tried both DVI ports with warm and cold boots, it will not work. HDMI->HDMI Cable (NOT provided by Dell) does work, but about 1 in 2 attempts, the monitor enters powersave mode, and you have to turn it off and on before it will respond.

 

3) Sharpness settings are in increments of 25. 75 is WAY too sharp, 50 is the most acceptable, 25 is WAY too fuzzy. The 50 setting provides a nicer image than my Samsung 223BW, but it's no where near as good as my older Dell 20" ultrasharp.

 

4) Tested input lag, it's consistently at 68ms behind a CRT monitor running off the same graphics card. The mouse stops moving on the screen (slightly) after you stop moving it, enough to be frustrating. I haven't tried any gaming yet!

 

5) During input lag testing, I dropped the monitor to 1280x1024, about every minute, the monitor would go black (not power saving or off), and come back on 2 seconds later. It did this continuously until I changed the resolution back up again to 1920x1200. The monitor simply refused to run at 1024x768 @ 60, 70, 75 or 85 Hz, it just entered power save mode.

 

Has anyone in the UK recently bought a 2408, and has anyone else noticed the menu issues or problems using a HDMI>DVI cable?

 

On the plus side, no dead pixels, backlight is not perfect but pretty good. Running brightness on 10, and it's still a bit on the retina burning end of the scale (it's late at night), even in a fully lit room. Very slight humming noise coming from the monitor, but it's barely perceptible over the quiet fans in the PC. I've noticed the humming noise only stops (to my ears) above 75% brightness, some people quoted 65%, but I can definitely hear it at 70!

 

Think I'll contact Dell either tomorrow or Monday, and feedback from other UK customers would be appreciated.

 

Regards.

8 Posts

August 29th, 2008 22:00

I'm looking straight at my monitor when I experience this... and definitely with white and essentially all colours i've test... it's how I first noticed it since a lot of webpages use white, then I checked in paint to see what was going on. Just set my desktop background to white and I still see it. It's sort of trippy because I see it, but it feels like it's some sort of shadow, and I move around but it stays there.

 

Tried messing around with my lighting to see if it was that, but even in a pitch dark room, sitting dead center and looking straight, I see the gradient that shouldn't be there

 

I know of the downsides of the PVA monitor at angles, but this is annoying when i'm sitting at center.

 

I have called tech support, and basically they were ready to give me a replacement, but it will take 21 days (that will go beyond my refund date), so if that monitor is just as trippy as this one, it'll be a waste of money for me...

 

That's why I'm trying to determine if this issue has been fixed and if it has, I am trying to determine how high the chances are I'll get the correct monitor.

 

My current version is 0G283H, with sharpness incrementing by 10s, so it does have the latest firmware and was also built in July.

2 Posts

August 29th, 2008 23:00

I'm living in Sweden and after many days of reading reviews and on forums I bought a 2408WFP and recevied mine on Thursday. As I had assumed this one was a A00 (made in CZ, June). Thought that I give Dell Sweden a call on Friday and hear what they say about this. The guy that I talked to had major problems understanding my problem and did not get what input lag was, and thought it was the response time, even after many tries from me to explain it. Well, he said that they were not aware of this problem and had no information about any new revision of this screen. A shame.

 

I really enjoy this screen: almost no backlight bleeding, no dead pixels, no strange sounds, great colors and great overall performance. The only issues I fell with the monitor for the moment (input lag and just a little bit too sharp) are fixed with the updated firmware. Therefor I'm wondering what the best way/approach is to ensure, or get better odds, to get the updated monitor. Is it just for me to wait 14 days and then ask for a replacement and cross my fingers?

 

At the same time I may ask if there is a way to inform Dell Sweden about this (new revision, input lag and so on)? :)

 

Thank you in advance.

 

/Mikko

144 Posts

August 30th, 2008 11:00


@Deathray wrote:

I'm looking straight at my monitor when I experience this... and definitely with white and essentially all colours i've test... it's how I first noticed it since a lot of webpages use white, then I checked in paint to see what was going on. Just set my desktop background to white and I still see it. It's sort of trippy because I see it, but it feels like it's some sort of shadow, and I move around but it stays there.

 

Tried messing around with my lighting to see if it was that, but even in a pitch dark room, sitting dead center and looking straight, I see the gradient that shouldn't be there

 

I know of the downsides of the PVA monitor at angles, but this is annoying when i'm sitting at center.

 

I have called tech support, and basically they were ready to give me a replacement, but it will take 21 days (that will go beyond my refund date), so if that monitor is just as trippy as this one, it'll be a waste of money for me...

 

That's why I'm trying to determine if this issue has been fixed and if it has, I am trying to determine how high the chances are I'll get the correct monitor.

 

My current version is 0G283H, with sharpness incrementing by 10s, so it does have the latest firmware and was also built in July.


@Deathray:

 

Could you please answer some questions to help me. I try to understand why, like street dreamer, I've a small mark on the screen, near the center: like a small dust that cannot be wiped away. In normal use it is hard to notice, except with enough light on the screen. But with the screen powered off and light on it you can see it.

 

On my previous 0CX268 i didn't have it. But it seems this "dust spot" (actually it is in the anti-glare coating, so it is impossible to remove it) exists on some 0G283H and 0G286H.

 

So I ask all users with a OG283H/0G286H the same question... ;)

 

Do you have this small "dust spot" on you 0G283H ? I guess no as your monitor has the new firmware...

 

Btw, it's great you got the new firmware, here in Europe we're waiting for it...

Do you now from which factory came your 2408 ? This is indicated by the first letters of the S/N.

In what country are you located ?

 

Thank you for your anwsers

 

About your problem: have you double-checked your DVI or VGA cable and tried with another input (HDMI/VGA/DVI) and with another graphic card ?

 

Try also a reset to factory settings in the OSD.

 

Also try to totally power off the 2408 and hold down the power button during 3 second (normally this is not related to your issue but does not hurt to try).

 

If none of this works, I'm afraid your 2408 has a defect.

Probably the CCFL backlight is malfunctionning. :smileyindifferent:

 

I've a 0G286H and have no gradient on solid colors.

Even the "brighter left side" problem of my previous 2408 is really less visible with this new 0G286H.

And for the red, blue, green and white colors in full screen, the display has a very good uniform brightness.

Message Edited by martidi on 08-30-2008 02:17 PM

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2K Posts

August 30th, 2008 13:00

martidi
I wonder whether what you are seeing is what is known as mura,
Mura: A Japanese word meaning "blemish" that has become widely used in the display industry to describe non-uniform areas on an LCD display. Muras range tremendously in size, shape and severity, which makes them very hard to categorize. Muras are generally considered to be defects in the LCD.
It is discussed here  and illustrated here.
 
As used in this document, it seems to describe the issue raised by 'Deathray' and others:
 
"All display monitors have some form of screen uniformity errors, or mura, across the display area due to a combination of non-uniformities in the LCD panel itself, and the LCD backlight system. This non-uniformity can be seen as combination of shifts in color and/or luminance, which, depending on the severity, may be very noticeable and appear as uneven areas of color across the display."
 
I see this on my display - a discoloration noticeable on white backgrounds - mostly on the left side of the screen but a little on the right also. It's very evident on the Viewing angle test at http://www.lagom.nl/lcd-test/. I have a S-IPS panel, so it's not PVA related.
Message Edited by gpro on 08-30-2008 09:51 AM

144 Posts

August 30th, 2008 14:00


@gpro wrote:
martidi
I wonder whether what you are seeing is what is known as mura,
Mura: A Japanese word meaning "blemish" that has become widely used in the display industry to describe non-uniform areas on an LCD display. Muras range tremendously in size, shape and severity, which makes them very hard to categorize. Muras are generally considered to be defects in the LCD.
It is discussed here  and illustrated here.
 
As used in this document, it seems to describe the issue raised by 'Deathray' and others:
 
"All display monitors have some form of screen uniformity errors, or mura, across the display area due to a combination of non-uniformities in the LCD panel itself, and the LCD backlight system. This non-uniformity can be seen as combination of shifts in color and/or luminance, which, depending on the severity, may be very noticeable and appear as uneven areas of color across the display."
 
I see this on my display - a discoloration noticeable on white backgrounds - mostly on the left side of the screen but a little on the right also. It's very evident on the Viewing angle test at http://www.lagom.nl/lcd-test/. I have a S-IPS panel, so it's not PVA related.
Message Edited by gpro on 08-30-2008 09:51 AM

Thank you for your answer gpro.

 

Very informative document...

 

But no, i don't think it's really a "mura".

Actually it seems to be a very little mark at the surface of the anti-glare-colating itself.

You can see it when the screen is powered off and has light on it.

In normal use it is hard to notice (fortunately). Look like a small dust.

 

I thought this was a specificity of my 2408, but street dreamer also see it on is 2408. That makes two of us, which is a lot considering the number of 2408 owners using this forum.

So I wonder if this mark is related to a new anti-glare coating process and if other have one (the coating of my 0G286H is different better than the one on my 0CX268), or if this just a random production event.

Message Edited by martidi on 08-30-2008 05:33 PM

8 Posts

August 30th, 2008 16:00

Hello

 

I've packed my monitor up already, but I can answer most of your questions...

 

1. I never noticed any sort of dust spot that you have been describing in the past few pages. I would guess this was a production issue that has most likely been resolved. Can't you get a replacement for it?

 

2. My Monitor was made during July 2008 in Mexico

 

3. I live in Canada, so this appears to be the source for American and Canadian 2408wfp monitors

 

4. I tried HDMI, DVI, and VGA inputs for my desktop. I also tried VGA with another computer... constantly facing the same issue with no difference based on the connector or computer used.

 

5. I tried reset to factory settings, but nothing changed. I noticed the problem right out of the box.

 

6. 3 second power-off, tried that, no change

 

I'm going to return this monitor. They already offered a replacement, but it can't be guaranteed what model I get, so why keep rolling the dice.

 

Good luck... I'll still visit this thread, so if you got more questions, feel free

Message Edited by Deathray on 08-30-2008 12:45 PM
Message Edited by Deathray on 08-30-2008 12:45 PM

144 Posts

August 30th, 2008 17:00


@Deathray wrote:

Hello

 

I've packed my monitor up already, but I can answer most of your questions...

 

1. I never noticed any sort of dust spot that you have been describing in the past few pages. I would guess this was a production issue that has most likely been resolved. Can't you get a replacement for it?

 

2. My Monitor was made during July 2008 in Mexico

 

3. I live in Canada, so this appears to be the source for American and Canadian 2408wfp monitors

 

4. I tried HDMI, DVI, and VGA inputs for my desktop. I also tried VGA with another computer... constantly facing the same issue with no difference based on the connector or computer used.

 

5. I tried reset to factory settings, but nothing changed. I noticed the problem right out of the box.

 

6. 3 second power-off, tried that, no change

 

I'm going to return this monitor. They already offered a replacement, but it can't be guaranteed what model I get, so why keep rolling the dice.

 

Good luck... I'll still visit this thread, so if you got more questions, feel free

Message Edited by Deathray on 08-30-2008 12:45 PM
Message Edited by Deathray on 08-30-2008 12:45 PM

No more questions thank you :smileyhappy:

 

I wish you luck with your replacement.

 

About this "dust spot", I guess it's indeed a rare production event. So I give up.

It is nearly invisible in normal use and easy to forget.

 

However I'll probably try to get a replacement because of the Input Lag and sharpness issue of the old firmware.

 

But here in Europe we have no sign of rev01. :smileyindifferent: 

 

 

 

1 Message

August 31st, 2008 03:00

I received mine on the 25th after ordering it on the 15th, and it was an A01.  Manufactured August 2008 in Mexico, and sharpness increments in 10s.  I didn't notice any input lag or pink hue, and was as happy as ever.

 

Then two days ago a stuck pixel near the center of the screen developed.  Tried using 3 different "stuck pixel fixers" with no luck.  I'm afraid I'll receive a refurbished or A00 model if I get an exchange.  Is there nothing else I can do  I've only had the monitor for 5 days!

 

I e-mailed Dell two days ago and still haven't gotten any reply yet.

 

 

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