HP LP2475w, IPS 24" Official Thread! (Now Available from OcUK)

Heofz said:
Why does it matter so much anyway? Is it more a case of non-PC sources needing a 1:1 output? (e.g. xbox, sky hd box, etc)
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Exactly. It's absolutely critical that the monitor is able to 1:1 map 1080p images from sources other than a PC because there is no alternative way to force it. On a PC, you have the option to use the graphics drivers to do the 1:1 mapping, but with consoles etc. the monitor's 1:1 setting is all you have.

I only asked you to do the test on a PC because I knew you had one, and because it's easiest to detects the issue in Windows with fine text.

Your monitor is set to Image Scaling - 'One to One', right?
 
Anyone with a GIG143 H/W GIG068 F/W unit

Please tell me their "Spares No.", located on the rear of the unit.

HP are trying to tell me that there are none of these unit's available based on my Spares No. (464184-001/ASSY:463419-701).

I need to know if the Spares No. on the new GIG143 H/W GIG068 F/W units differs at all ASAP!
 
Heofz said:
In the OSD menu itself? I've looked in every setting and couldn't find it :(
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Ah, I think I know what the problem is... You need to be in the "Image Control" menu, which is greyed out when the Monitor is being fed it's native resolution of 1920x1200.

With "Use my displays in-built scaling" still enabled in the NVIDIA CP, change your resolution to 1920x1080. The "Image Control" menu in the monitor's OSD should now be usable. Enter it, and navigate to "Custom Scaling" and select "One to One".

The screen should now be 1:1 pixel mapped correctly, with letterbox bars and the monitor should report "1920x1080 60Hz."

Heofz said:
Mine is:
464184-001/ASSY: 463419-701

Manufactured: June 2009
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Thanks! :)
 
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Skakruk said:
*snip*
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Ah ha! :)

Right, got it to work as you said, and managed to get it working properly in one-to-one mode, showing the black bars top and bottom. The default sharpness setting meant that the text looked quite blotchy like in your photo. I reduced that setting to the lowest (1), and it looks *almost* ok, but some text is still not *quite* as crisp as running at native. I doubt many people would notice the difference, but I can as I have an eye for detail :)

White text on dark backgrounds seem to look perfect however, but you can almost make out minor defects in the cleartype with black text on white backgrounds. It's hardly noticable; almost looks like windows is using a bad cleartype setting, but actual graphical shapes and their pixels seem to be well defined, and exactly the same as if the monitor was running native.

All in all I believe the dodgy text is a problem with windows handling cleartype, and possibly not actually to do with the monitor itself. I would say this monitor has no problem whatsoever in displaying output from non-PC sources, such as xbox or blu-ray player.

Having said that, one thing also that I noticed is that the OSD menu does not display the resolution at the bottom when running at 1920x1080, rather it just shows "H=67.4kHz V=60Hz", but this switches back to showing "1920x1200 - 60Hz" if I change the resolution back. Kind of odd, but meh :p
 
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cataferal said:
IRT Heofz - It displays as 1920x1200 on the monitor? There's a problem with our test then...

I've just tried this out myself. I have the Nvidia Control Panel set to "Use my display's built-in scaling", and the resolution set to 1080p. I'm getting a perfectly crisp image now, but I'm not convinced the Control Panel is telling the truth. The monitor isn't even receiving a 1920x1080 signal. Furthermore, the "Image Control" option in the monitor's OSD (used to change sharpness or scaling settings) is inaccessible.

This wasn't the case for me last year; I had the same problem as Shakruk (and I'm on F/W GIG 052). Obviously, this is to be assumed a bug in Nvidia's latest drivers.
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I'm using the v186.18 WHQL drivers with my NVIDIA GeForce GTX 280 graphics card due to an AA bug in the latest drivers and if I set 1920x1080 using DVI then the screen text look blotchy and poorly scaled, no doubt due to the fact the image is being stretched vertically from 1080 pixels to 1200 pixels as there is no top and bottom border as you'd expect with 1:1 pixel mapping. This is using the drivers "Use my display's built-in scaling though".

I've discovered that in order to obtain proper 1:1 pixel mapping I have to set the control panel to "Do not scale". This gives me a vertically centred 1920x1080 image with top and bottom borders of (presumably) 60 pixels each in height. Text looks crisp and sharp because the image is unscaled.

The OSD still reports the resolution as 1920x1200 60Hz though but techically it is if you include the blank top and bottom borders.
 
Darren1967 said:
I've discovered that in order to obtain proper 1:1 pixel mapping I have to set the control panel to "Do not scale". This gives me a vertically centred 1920x1080 image with top and bottom borders of (presumably) 60 pixels each in height. Text looks crisp and sharp because the image is unscaled.
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Don't know why I didn't try that before :p Works 100% perfect for me also :)
 
Heofz said:
The default sharpness setting meant that the text looked quite blotchy like in your photo. I reduced that setting to the lowest (1), and it looks *almost* ok, but some text is still not *quite* as crisp as running at native.
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That's unfortunate. I'd have thought that they'd fix that again in the latest firmware. :(

It seems that GIG-045 is the only F/W version that displays 1080p correctly.

However, just yesterday HP told me that a new F/W was soon to be released. I was demanding the latest unit and they were suggesting I wait for the new F/W to become available, then flash my current unit. I guess we'll have to wait and see.

I know the 1080p bug seems quite minor, but it really shouldn't be there at all. Especially in what is probably the most widespread resolution in the entire world ATM.

Darren1967 said:
I'm using the v186.18 WHQL drivers with my NVIDIA GeForce GTX 280 graphics card due to an AA bug in the latest drivers and if I set 1920x1080 using DVI then the screen text look blotchy and poorly scaled, no doubt due to the fact the image is being stretched vertically from 1080 pixels to 1200 pixels as there is no top and bottom border as you'd expect with 1:1 pixel mapping. This is using the drivers "Use my display's built-in scaling though".

I've discovered that in order to obtain proper 1:1 pixel mapping I have to set the control panel to "Do not scale". This gives me a vertically centred 1920x1080 image with top and bottom borders of (presumably) 60 pixels each in height. Text looks crisp and sharp because the image is unscaled.

The OSD still reports the resolution as 1920x1200 60Hz though but techically it is if you include the blank top and bottom borders.
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If the monitor reports 1920x1200, then your GTX280 is doing the 1:1 mapping. That should really only happen when "Use NVIDIA Scaling" is selected, but NVIDIA drivers are EXTREMELY buggy ATM, so that hardly surprises me.

I'm not even sure why the "Do not scale" option exists anyway. Wouldn't "Do not scale" and "Use my displays in-built scaling" be the same thing?

yashiro said:
Cable - Yes.
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Just make sure it's not one of the faulty cables.

=============================

I think I may have finally got through to HP. This time I didn't mention Firmware, but rather demanded a unit with an MFG.DATE CODE of March 2009 or later.

I then received a call advising me that the 'part' was out of stock, and that I'd be notified when my replacement is available. This is promising - it means that they're not just sending me another outdated refurb from their return shelf.

I sincerely hope that this means they're waiting for new GIG143/GIG068 stock (which isn't here already because my country is such a hole).

I guess they could just be waiting for this 'new firmware' they keep talking about, so they can flash it to an ancient GIG-122 H/W unit and send me that. They had better not be!
 
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@Skakruk: i'd fully star out your swearie mate :p

I'm not hugely convinced there is even a problem with my monitor tbh, as doing what Darren1967 said (i.e. completely turning off image scaling) solves the issue completely.

Skakruk said:
I'm not even sure why the "Do not scale" option exists anyway. Wouldn't "Do not scale" and "Use my displays in-built scaling" be the same thing?
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I don't think this is the case purely because the monitor behaves differently.
 
Heofz said:
Diddums :p

At least your order didn't get rejected 5 times for no reason :p Took me like 2 weeks just to get them to take my money! :eek:
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Funny thing is, I rang up before and after the order to ensure it would be sent that day...:rolleyes: When I rang up this morning, the attitude was "You bought it, get it when you get it, and stop moaning"
 
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Skakruk said:
I'm not even sure why the "Do not scale" option exists anyway. Wouldn't "Do not scale" and "Use my displays in-built scaling" be the same thing?
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The " Do not Scale " option enables the NVidia 1:1 pixel mapping.
If you set a resolution lower than your native resolution, ie set 1650x1080 on a 1920x1200 screen you will have Black bars all the way around your picture. But the graphics card will still output 1920x1200.
This option is for monitors that do not support 1:1 pixel mapping, and want to display a lower resolution without scaling it to fit the screen. Hence the term " Do not Scale "

Right I have a question now :)

This HP LP2475w, what`s it like at gradient banding ? especially dark green to black.
ie go into photoshop select the gradient tool, select black as one colour and a dark green as another. Draw the gradient diagonally accross the screen.
Is the gradient a nice transition from black to green or can you see bands?

Cheers
 
Skakruk said:
I'm not even sure why the "Do not scale" option exists anyway. Wouldn't "Do not scale" and "Use my displays in-built scaling" be the same thing?
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No, because the display I'm using has a firmware which is set to scale any non-native resolutions, at least with DVI and Windows it does. If you select "Do not scale" then any non-native resolutions appear to be mapped 1:1 and centred, i.e. 1280x1024 would appear surrounded by a black border of 320 pixels wide on either side and 88 pixels in height at the top and bottom. I presume that the "Do not scale" option is still using the graphics drivers, only it is not doing any scaling at all.

That's with DVI though, I've not tested 1080p through HDMI from my Xbox 360 or PS3 yet (may do at the weekend) so they may work differently, i.e. the firmware may map a 1080p signal 1:1 because they aren't being manipulated/overridden by graphics drivers.
 
Mick-1965 said:
This HP LP2475w, what`s it like at gradient banding ? especially dark green to black.
ie go into photoshop select the gradient tool, select black as one colour and a dark green as another. Draw the gradient diagonally accross the screen.
Is the gradient a nice transition from black to green or can you see bands?

Cheers
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The HP LP2475w has an 8-bit panel so it can handle 16.7 million colours without dithering like the 6-bit panels do. In theory banding should only appear on a calibrated monitor if the image itself has banding. I didn't notice any banding in the Langom (or whatever it's called) colour tests... I saw only a smooth transition from one shade to the next.
 
Darren1967 said:
The HP LP2475w has an 8-bit panel so it can handle 16.7 million colours without dithering like the 6-bit panels do. In theory banding should only appear on a calibrated monitor if the image itself has banding. I didn't notice any banding in the Langom (or whatever it's called) colour tests... I saw only a smooth transition from one shade to the next.
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Thanks for the input :)
However I do understand the difference between 6 bit and 8 bit panel technologies. There's more to it than just whether the panel can handle 8 bit colour.

To cut a long story short, I all ready have a screen with an H-IPS 8 bit panel, but it suffers from some banding, most pronounced with black to dark green.
I do a bit of amateur macro photography, and with bugs (dark colours) in their natural habitat (greens) it shows up now and again.

Calibration reduces this but doesn't eliminate it.
This is why I ask for the photoshop test. If you haven't got photoshop. no matter
 
Sorry, I can't help you there then, Mick-1965.

I think I may have a fault with my screen. This morning the screen blacked out in Vista (64-bit) for a split second and now I'm seeing intermittent shaking of the screen every now and then. I saw a couple of weeks ago too but thought I'd imagined it. It's a slight shudder of the screen that causes it to shift a few pixels from right to left; blink and you miss it. It's a very rare occurence but I shouldn't be seeing this at all, right?

Also for some reason Windows seems to set my resolution to 1920x1200 @ 59 Hz although the OSD displays it as 1920x1200 @ 60 Hz. It does even if I set the resolution to 1920x1200 @ 60 Hz. Is this normal? Does it matter which I use.

I thought maybe setting it to 60 Hz was causing the screen shaking but having just set it to 59 Hz I've seen it again just now as I've been typing.

Do I have a faulty screen or is something causing it to shake, e.g. some kind of interference? I have a pair of Logitech mini-speakers on either side of the screen and the subwoofer is located just to the right of the right-hand speaker but they're supposedly magnetically shielded and never caused problems with my previous (TN-Film) monitor. Would they cause the screen to shake periodically even if they're not on?
 
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