Gradient banding on X220 IPS screen

Over on the Faint Ghosting on X220 IPS screen thread, I mentioned (twice, actually) that I see gradient banding on my X220 IPS screen. Nobody else has brought up this issue, and at the moment it seems that I may have a defective screen.
Here's a test image to check for gradient banding: http://www.lagom.nl/lcd-test/gradient.php. View and compare how it looks on other laptop and desktop monitors. Gradients appear smooth on my desktop PC (Dell monitor and low end Radeon card) and MacBook Pro, but banding is easily visible on my X220 with IPS screen. I even see faint banding when I view this forum, the subtle gradient background at the top of each post. My display is set to 32 bit color and 60 Hz refresh.
I'll take it up with Lenovo support. Meanwhile, anybody else who has the issue can post and discuss here.

I have the exact same problem.
When there is a gradient (like on the login screen, or the webpage linked earlier) I can see the image moving for a couple of seconds. This kind of behavior from the screen also makes my eyes painful after a while.
I love this laptop otherwise, but this is a terrible quality issue. I tried to explain my problem to lenovo with no luck.
Anyway, from what I read here, it's common to most x220, what can I do.
If at least lenovo was helpful. Or if they could let me return the laptop without the absurd 15% restocking fee...
Edit: Alright, found by myself after a couple of hours searching: The moving bands when the display is "adjusting" to the new picture is in part due to Intel's power saving tech "Intel Display Power Saving Technology" which can be disabled in intel's control panel. It causes flickering of the screen in general, but mostly gradients.
For those wondering, yes, it does save some power. The computer idling with this feature uses 10 watts. Without it's 11.  I don't know how it'll affect battery life, but if I really need longer battery life, I'll turn the brightness down myself.
I still notice some flickering, I'll see how it goes. The banding, while now static, is still clearly visible though.
Maybe someday they'll learn LG is not good at IPS screens (see the ipad2 fiasco too)

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    you could possible try to reconnect the LCD cable and see whether that helps. If not, then it is most likely that you are in for a LCD replacement.
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    Hi Guys,
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  • Faint Ghosting on X220 IPS screen

    ADMIN EDIT:
    There are two items being discussed in this thread:
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    2) "Ghosting" or persistence of  an after-image phenomena after a static image is maintained on the display for 15 or more.   This comprises the bulk of the discussion on this thread.
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    Thank you
    One picture of the vertical line is posted on the link below.
    http://forum.notebookreview.com/lenovo-ibm/578520-faint-ghosting-finally-noticed.html
    ThinkPad X220 i7 | 8 Gb ram | 320 Gb Hdd 7200 rpm | 6 Cell

    I have the exact same problem. I noticed that I was getting this pseudo burn-in (and also quite a lot of backlight bleed). I returned my x220 and ordered a new one, same configuration. The new one just came, and it has the same ghosting problem as the first. Note that the ghosting does not take hours to occur: all I need to do is leave my web browser open for about fifteen minutes and then switch to another screen with dark background, and the UI elements will appear faintly burned into the screen, all over whatever text I'm processing (I use a text editor with a dark background, for programming). This is totally unacceptable, and I'm very disappointed. At this point, I don't know what to do: I've tired both linux and windows, and returning the laptop for a new one. It seems like I am going to have to return this second one too, and I don't think I am going to try and get a third laptop. This is very disappointing, because the rest of the compter is very nice.
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    Cable connection and cable is the easiest to check. There is high probability your LCD controller board that is at fault. May require a new LCD.
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    Jin Li
    May this year, be the year of 'DO'!
    I am a volunteer, and not a paid staff of Lenovo or Microsoft

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    haha yeah just tilt it vertically and watch everything turn negative on a TN screen.
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    Jin Li
    May this year, be the year of 'DO'!
    I am a volunteer, and not a paid staff of Lenovo or Microsoft

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    Hi
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    Solved!
    Go to Solution.

    Welcome to the forum!
    Dead pixels cannot be fixed by swapping the LED card or cable, it's a defect on the panel itself. 
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    /L40SX/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E/A20p/A22p
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  • X220 IPS - blinking screen (sore eyes)

    Hello,
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    AlTov wrote:
    I have exactly the same problem. The IPS screen on x220 hurts my eyes!!! On 60Hz.
    Lenovo, wouldn't you answer please?
    welcome to the community.
    first, please make sure that you're running the most current video driver (8.15.10.2769). you can get it here:
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    this is the driver matrix for the x220 and it usually has new drivers before you'll see them in tvsu.
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    http://forums.lenovo.com/t5/X-Series-ThinkPad-Laptops/X220-uncontrollably-switches-to-50Hz-refresh-r...
    specifically on the last page, the third post (by bananaman). you'll need to set two parameters in the intel graphics control application. no need to hack any drivers or edit the registry as other workarounds suggest.
    please post back and let us know if this solves the issue for you.
    cheers.
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    X1C3 Helix X220 X301 X200T T61p T60p Y3P • T520 T420 T510 T400 R400 T61 Y2P Y13
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  • Would an IPS screen for an X220 make me overcome my disappoint​ment with the stock display...​.

    ....enough to pull the trigger on getting an x220?
    I`ve been in the market for quite some time for a new laptop to replace my old 12.1" VIAO and thought I`d finally found one that had most (if not everything) that I was looking for in the X220. Before configuring and ordering, I managed to find a retailer that stocked them, and wanted to make sure the small palm rests wouldn`t be a deal breaker. The palm rests were fine, but I`m still trying to overcome my disappointment with the display (non-premium), which was a real letdown. The main issues I had were:
    colour accuracy
    contrast
    brightness
    sharpness
    real estate orientation
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    Back on track....since I have no hope of actually seeing a live IPS screen before making a very expensive decision, can people please weigh in with their opinion on how much better the IPS is? I mainly use the laptop for productivity software, presentations, architect. dwgs and plans, site plans, PDF creation etc, but also do a lot of photo editing for work and pleasure.
    Display quality has always been very important to me, and it would be a hard pill to swallow a mediocre display to get the other great features the machine offers. The sample machine I tried was beside a MBP/Air display, and it was almost enough to make me want to drink the cool aid and move to the dark side - the difference was very large.
    Can anyone compare the X220 IPS to MBP/Air displays, or a VIAO Z display?
    Thanks very much in advance for any help and insight!

    Look at here:
    http://www.youtube.com/watch?v=p8MO-XaCZ_8
    Also, there are several similar videos.
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  • Gradient Banding

    Over the years, working with Illustrator, I've come to expect that Illustrator just has issues with creating gradients, and the only way to get a good smoothly transitioned gradient is to use Photoshop. I'm  really suprised that Adobe hasn't  solved this by now. I've been reading posts about gradient banding only in dark shadows, that the banding goes away when printing, or people just trying to say that a particular gradient just can't be recreated due to the limitations of a mathmatically defined gradient. I understand completely that the gradients in Illustrator are mathmatically defined, but essentially, so are the gradients in Photoshop, even if they end up being rendered as a bitmap, correct? I also understand that images can have stepped gradients as a result of either color profile gamuts, or bit depth, however the banding I've run into is not a result of monitor issues, limited color gamut, bit depth, or excessively dark gradients and the banding is in Illustrator, shows up in the exported file (tiff, I've also tried rasterizing the AI file in Photoshop with 16bit bit depth and still got banding) as well as prints, because it's IN the file. Below is a Tiff file that shows a gradient created in Illustrator CS6 on the left, Photoshop in the middle and the original art from Illustrator on the right. You won't be able to see the banding in the file unless you download it and view it at 100%.
    So, the question is, is there a workaround in Illustrator, or a alternate way of creating gradients directly in Illustrator that will prevent this banding that I've somehow been missing in the 10 years I've been working with it? Also, Adobe, is anyone there trying to solve this problem?
    -Matt

    Over the years...I've come to expect that Illustrator just has issues with creating gradients...
    And what other vector drawing programs have you used which have no occurrence of gradient banding?
    ...and the only way to get a good smoothly transitioned gradient is to use Photoshop.
    Contrary to popular misconception, raster imaging is not immune to gradient banding. Consider: Everything you view on your monitor is a raster image.
    I'm really suprised that Adobe hasn't solved this by now....I understand completely that the gradients in Illustrator are mathmatically defined, but essentially, so are the gradients in Photoshop, even if they end up being rendered as a bitmap, correct?... Also, Adobe, is anyone there trying to solve this problem?
    What do you expect Adobe to do about math?
    I've been reading posts about gradient banding only in dark shadows, that the banding goes away when printing, or people just trying to say that a particular gradient just can't be recreated due to the limitations of a mathmatically defined gradient.
    This has been discussed at length many times in this forum. What part of what you've read do you not understand, or to what specifically do you take exception?
    I also understand that images can have stepped gradients as a result of either color profile gamuts, or bit depth, however the banding I've run into is not a result of monitor issues, limited color gamut, bit depth, or excessively dark gradients...
    How do you know the banding you're seeing is not a result of any of those issues?
    ...and the banding is in Illustrator, shows up in the exported file (tiff, I've also tried rasterizing the AI file in Photoshop with 16bit bit depth and still got banding)...
    Where are you viewing the Illustrator, TIFF, and Photoshop grads? (On your monitor.)
    ...as well as prints, because it's IN the file.
    It's in what you're viewing (the print). To see if the same banding pattern is in the image file, open the image file, count the bands, and actually measure and compare the pixel color values between the bands.
    Below is a Tiff file that shows a gradient created in Illustrator CS6 on the left, Photoshop in the middle and the original art from Illustrator on the right.
    No, below is a JPEG assembled from screenshots from your monitor.
    You won't be able to see the banding in the file unless you download it and view it at 100%.
    You can see the banding at multiple zooms. The bands change because of the resampling that your video system performs when it resamples on the fly when zooming or scaling.
    ...is there a workaround in Illustrator, or a alternate way of creating gradients directly in Illustrator that will prevent this banding that I've somehow been missing in the 10 years I've been working with it?
    There is no workaround that will prevent all banding in all grads in all situations in Illustrator or any other program. So you'll have to be much more methodical and specific in your question if you really want to understand what is going on.
    All images have banding, just as all raster images have "jaggies" (square-shaped pixels). The issue in both matters is to make them fine enough to be negligible. Visible "jaggies" is a mathematical conseqence involving the factors of pixel size and halftone dot size. Similarly, visible banding is a mathematical consequence involving the factors of number of tones (for each color channel or separation ink) that an imaging device (monitor or press) can render, and the distances spanned by each possible value step.
    When you send a linear grad command to a PostScript device, you are sending a command to vary from color A to color B across distance D in however many steps the device can handle. The device does what it physically can within its hardware limitations. Same is true for your monitor. But the limitations differ between the devices.
    So the banding you see on your monitor differs from the banding you will see on your desktop printer and from the banding you will see on film seps and from the banding you will see on press. The specifics depend on the specifics of the artwork and the imaging systems.
    Your monitor can display 32 bit color. But how many of those values are available to paint a gradient across a distance depends on how many different colors--and how different they are--to be displayed across how many monitor pixels.
    Your desktop printer has a fixed number of printer spots. The printer spots are used to build up halftone dots of varying size. How many different sizes of halftone dots (how many levels of gray) the printer can build is a mathematical function between the number of printer spots and the number of halftone dots available within a given distance. If the differences in adjacent tones (for each color separation involved) is finer than the differences between possible gray levels of the halftone screen, posterization occurs and you see it as bands in a linear grad.
    An imagesetter has a greater number of printer spots and can therefore build more different sizes of halftone dots for any given halftone ruling than can your desktop printer. So it is less prone to banding because it is able to render more levels of gray. But it is not immune. You can still exceed its possibilities by demanding finer differences in tone steps than it can reproduce.
    Banding is quite often ameleorated in print because (depending on the number of component inks involved in the subject color), the bands occur at different places on each color separation. So the resulting bands in the composite are narrower than on the individual seps, and therefore less evident. The same principle occurs on your desktop printer, but at a courser scale, because it is still a lower resolution device.
    Banding is just as likely to occur in mathematically applied linear grads in raster imaging. The rasterization is not deferred to print time, it goes ahead and occurs. But the same principle applies. You are still telling the program to change the values of a fixed number of pixels in 8-bit channels. The result is being displayed on your monitor's array of pixels. When printed, the result is being rendered on the printer's (or film's) array of halftone dots. So the banding quite likely occurs at different locations from where they occur on your monitor. In other words, I don't care what you're doing, your monitor is a poor simulation of the banding that will occur in final print. For one thing, everything you see on your monitor involves three "separations" (RGB), not four.
    The myth that raster imaging is somehow magically immune to banding stems from the fact that raster images are very frequently not really linear grads, but scattered dithering patterns (otherwise known as noise). If you use a linear grad tool in a raster image program to paint a linear grad across a broad distance of pixels, you can create banding just as you would in a vector-based program. If you do, then the bands are "nailed down" (rasterization is not deferred to print time) and if the imaging device has sufficient resolution, it will faithfully reproduce that same banding.
    Back when raster file size was a much greater issue than it is nowadays, there were 8-bit raster imaging programs (Color It! being one example) which could make beautiful images using only 256 different colors. How did they do it? By effective use of dithering. The differences in adjacent colors were greater than those of a 24-bit image. But they were mixed and scattered so as to simulate additional colors, just as the droplets from an airbrush spraying a single color can result in the perception of multiple tones, just  as a halftone screen does the same thing. Well, the nature of raster imaging is like that. Zoom way into what looks like a smoothly graduated sky and you'll see that it is in fact a scattered mixture of different values (noise).
    Vector-based grads don't involve noise. They're just mathematical commands sent to the printer's interpreter. If you must, though, you can assign noise as a raster effect to your vector objects, and it can reduce visible banding because what you would really be sending to the printer ultimately is a dithered raster image.
    So you just have to use some educated (i.e.; experienced) discernment when creating grads and when interpreting what you see on your monitor. And bear the general rules-of-thumb in mind:
    The greater the distance spanned, the fewer component inks involved, the smaller the color change, the lower resolution the imaging device...the greater the likelihood of banding.
    Set up some simple tests using simple grads in methodically arranged different values. You can build such a test array on a single page, just as you would build an array of color chips. Print it. Study the results.
    JET

  • Gradient banding issues in CS3

    CS3 has a gradient banding problem that no-one seems to be openly acknowledging or addressing.
    If i make a graduated background in either Illustrator or Photoshop there is obvious banding in the gradient fill.
    I have researched the problem on the net and it seems that many people are experiencing this problem but that there is no known solution or patch form Adobe to fix this. Only useless suggestions about work arounds for this simple exercise. Interestingly several people report never experiencing this problem until they upgraded from CS to CS3. I also fit this category.
    I run a mixed Mac/PC network and CS3 produces fairly large background gradients perfectly in PS on my PC, though not in Il. My macs fail to produce gradients of any useful size without significant banding in both PS and Il.
    I know that many other people have this issue - when is Adode going to publish something useful to address it?

    John,
    Where do you get the idea that Document Raster Effects settings should match a "document resolution" of 5080 or 2540?
    > "300" is way too low ( if you are referring to document resolution, not image resolution )
    Document Raster Effects
    is a raster image resolution setting: it's the resolution of the raster images that are created by Illustrator's raster effect features. Specifying a raster resolution that is 1:1 with an imagesetter's dpi is ridiculous.
    Further, where exactly is it that you "usually" set a "document resolution" in Illustrator CS3? The document resolution setting in earlier versions was simply the flatness setting, and defaulted to "800 dpi" (which is a flatness of 3, assuming a 2400 dpi imaging device). That setting is no longer even present in Illustrator, since (as I recall) AI 10. Flatness had nothing to do with grad fills; it affects curve accuracy.
    You guys are talking about a problem with banding--the OP implying that he has been investigating the problem for some time--responders even offering suggestions to "fix" it. Yet no one in this thread has yet stated any of the
    specifics that are necessary to even talk about banding:
    Where
    is the problematic banding occurring? Paddy Rogers does not even say whether he is talking about banding
    on screen or in
    output.
    Assuming the banding is in printed output, what kind of device is it? If it's an imagesetter, is it using PostScript level 3?
    What are the CMYK color values between stops of the of the page-size grad fill?
    What is the size of the page (distance the grad spans)?
    What is the halftone ruling being used?
    These suggested "fixes" are myths:
    Rasterizing the artwork
    This is nonsense. It doesn't matter if the color values across a uniform grad are from vector commands or actual colors of pixel bands. Raster grads yield banded results just as easily as vector grads do. Banding is a function of the dot size and halftone ruling of a printing device. Rasterizing doesn't magically increase the resolution of a printing device.
    Setting Raster Effects Resolution to a higher value
    This has nothing to do with grad fills in Illustrator. A grad fill is not a raster effect.
    Transparency Flattener Settings
    Again, has nothing to do with banding in grad fills. A low setting may result in pixelation, not banding.
    Antialiasing
    Has nothing to do with banding in graduated fills.
    Paddy, you claim that you are experiencing increased banding in both Photoshop CS3 and Illustrator CS3, as compared to the CS versions of those apps. Have you actually compared the
    same files being sent to the
    same printing device? If so, provide the specifics of a page-size grad that reliably produces the problematic banding. Be sure to state exactly what device you are printing to.
    JET

  • Switch to ips screen

    hi, have the x220 coreI5, no ips : is it possible to switch to a ips screen (does it implie a new motherboard ?) ?
    thanks

    grenouille, look at this the biggest China site like ebay:IPS for x220 on taobao.
    Also look at this thread on thinkpads.com
    x220 | i5-2520m | Intel ssd 320 series | Gobi 2000 3G GPS | WiFi
    x220 | i5-2520m | hdd 320 | Intel msata ssd 310 series | 3G GPS | WiFi
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  • X220 IPS display backlight issue (with photos)

    Hello,
    I've purchased the Lenovo X220 laptop with the Premium HD IPS display and I do have a problem with it (see below).
    Laptop was purchased something like month ago and I've spotted this after I've started to work with it more heavily but after 14 days, so I was not able to return it to the seller (http://www.lenovoonline.cz).
    When you put backlight to maximum you see that the display is not evenly lighted and forming bright spots on the bottom of it. It's most noticable on the black background.
    I've sent notebook for repair (http://www.pcnet.cz) with this description (translated to english):
    "With maximum brightness set and the black display/background (eg. BOOT screen) on the bottom edge of the display there are visible white spots/maps. Small but visible and not even with different sizes. It's most visible on black background and while limiting external light (darker room, working in the night). Spots highlights even more when you try to pull the display towards you into steeper angle."
    The laptop has been in the repair for 2 weeks and the result was this description:
    "This kind of display is very sensitive to any pressure, and it will result in the brightening the place. It is specific for this model line and it's not the reason to warranty repair. We recommend to lower the brightness level in the darker room. Check of the display frame has been done and no problem has been found."
    Later they said they've replaced the panel too.
    However the issue still persists (see attached photos).
    Let me say few words about this:
    display is showing the spots while in rest I'm not touching it, if it's sensitive for pressure than it is indicating that there's some pressure on it while mounted in the frame
    I want to have backlight lighting the display evenly on the whole surface area, that's the correct function of a product anything else is NOT
    if they claim this is how it should be and it's actually a "feature" of the PREMIUM display then if I had known I would choose regular TN display and even save some money, needless to say that in that case the word PREMIUM sounds like a bad joke
    after lowering brightness level problem doesn't go away, still visible just gradually slightly less, depending on the brightness set
    if you are working in the night without external light this is VERY irritating
    So my question to you X220 community is, do you happen to have same issue?
    as they say it's "normal" with X220
    Thanks
    EDIT1:
    I've done a search now and it seems I'm not alone with this issue
    PS:
    I'm attaching two photos.
    First is the X220 (booted into GNU/Linux with X running and mouse as reference).
    Second is the very old Z60m (booted into Windows and running blank screensaver).
    Compare for yourself which one you would prefer.
    It was shooted in absolute dark (I'm used to work like that) with Canon EOS350D on tripod.
    There are some slight artifacts which you normally not percieve but anyway I think it clearly shows my point.
    X220
    Link to image 1
    Z60m
    Link to image 2
    Moderator note: images larger than 50k converted to links per forum rules: Lenovo Community Participation Rules

    Yes, at maximum brightness level the backlight bleeding is very visible but I use it at 5 or 6 level where it has excellent contrast ratio considering how crappy current notebook displays are in general. The uneven backlight is caused by fancy LED backlight which is still not able to deliver similar quality regarding uniformity as good old CCFL backlight (that's why professional LCD monitors still rely on W-CCFL backlight). But I agree that the top-left corner is way too much bad and might indicate that the panel is seated badly in the frame. On the other hand my old IPS panel in R51 also have backlight bleed at maximum brightness level.
    Major problem is that Lenovo is still not able to fix the stupid bug with brightness level always set to max in BIOS screen that the backlight bleeding is very visible and irritating everytime you boot your machine.
    IMHO, the X220 IPS panel is still much better than any ugly contrastless TN panel Lenovo puts into ThinkPads (except 15" FHD). I bet that you would hate the X220i TN panel more than this one
    There are also two different revisions of the IPS panel, the second one fixes problems with image retention. As for comparison with Z60m, X220 display lid is much more fragile so the panel is not protected well against pressures and flexes. In any case panel flex should affect the backlight bleeding temporarily only. If it persists it is subject to repair (replace, reseat etc.).
    Unfortunately I don't have any good low-light camera that takes useable pictures in dark environment so I can't post relevant images of the backlight bleeding.

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