Display, Backlight & OS issue

Hi all,
So, I opened my Macbook Pro 13" Late 2011 this morning to find the screen behaving strangely. There was a blue tint spreading from the left side, like ghosting, but more streaky.
Anyway, first thing I tried was to shut down the Mac and start from a fresh boot rather than from Sleep.
I power up and the screen doesn't even switch on. No flicker, no power. Also, strangely, the keyboard backlight doesn't work either.
PRAM reset and SMC reset both tried - both didn't change anything.
So, I plugged the Mac into an external display and that functions okay - albeit the O/S refuses to boot because of a permissions error that cannot be fixed using Disk Utility.
I'm in Single User mode copying my data manually to an external hdd ready to reinstall Mavericks.
My question, ultimately, is three-fold.
1. Are the LED display backlight and keyboard backlight linked in any way by hardware that could have failed?
2. Is this hardware part of the logic board or can it be replaced separately?
3. Would the issue with disk permissions be linked to the display problem and could a reinstall of Mac OS fix the display issue???
Any more info you need, i will be glad to provide. Bear in mind I do not have a functioning OS to give logs etc.
Thanks,
James

You should do what's easy for you. Amazon or service center.
A product is replaced withint the first 7 days of purchase if proved defected.
You have warranty, so you should probably go to Sony service center and see what they say. Most probably you won't need to contact Amazon. While the Amazon deal is good as well. Get the money back and buy the SW from Sony center.
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Why won't my display backlight come on?

I have a unibody MacBook Pro purchased in late 2009.
Sometimes when I wake up my laptop I can see that the display has come on but the backlight that makes the display bright is not on. On other words, the screen is completely dark, but under the right lighting I can see that the LCD itself is on (windows are up, the cursor is moving around the screen) but there is no light making it all bright (i.e., the display backlight is off). When I put it to sleep and wait for the indicator light to start pulsing and then wake it up again it will off then come on, but of course I shouldn't have to do that.
Perhaps related or unrelated is my keyboard backlight also doesn't work. I can turn the brightness up and down using the F5 and F6 keys and the indicator will come up on the screen showing the brightness going up and down, but the keys themselves are not lit at all.
Was there a recall sent out about this issue? I do have AppleCare.
Thanks.

I have the same thing, not only my current Retina MacBookPro (Mountain Lion) but on my previous 2008 MacBook black (Lion). I find it very odd that I'd have the exact same issue on two different computers; there must have been a setting on the old one that got migrated to the new one somehow?

BB Flip External Display Caller Notification Issue

Hello-
I have owned this phone for approximately two weeks; and until today it was working perfectly. As of today the external display is no longer working for "caller ID" or incoming call notification. The temporary fix was to disable the "auto answer" function for convenience, although this does not truly solve the problem.
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Message Edited by skilltel on 11-03-2008 09:05 PM
Message Edited by skilltel on 11-03-2008 09:06 PM
Message Edited by skilltel on 11-03-2008 09:06 PM
Solved!
Go to Solution.

Hi and welcome to the forums!
Did you try the battery pull we talked about?
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Hi I have only 2 days in USA to buy Mac Book Pro 13" with Retina display. The issue here is that I'd like to get the westerns spanish keyboard and at the apple store the guy said it will take 6 days. I was wondering if I do the purchase NY on the 7th of M

Hi I have only 2 days in USA to buy Mac Book Pro 13" with Retina display. The issue here is that I'd like to get the westerns spanish keyboard and at the apple store the guy said it will take 6 days. I was wondering if I do the purchase within the express checkout, Will I be able to get the laptop before leaving NY on the 7th of May 2014?
I do not have any experience with the express checkout, actually I do know how it works, any advice please?
Thanks!!!!

Call the store on the telephne and ask. However, I doubt it since a store would not normally have an item with non-USA features
Also, this is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum

PowerTOP: 2x Display backlight

Hi there,
On my Thinkpad X200T,PowerTOP shows me 2x power consumption for Display backlight.
See this screenshot: http://i.imgur.com/mP0H6hX.png
How should I interpret this?
Does my display use 4W in total or do I have indeed two different display backlights due to the tablet functionality of my thinkpad?
Or does PowerTOP interpret the display backlight twice because I have acpi_video0 and intel_backlight in /sys/class/backlight?
~ ls /sys/class/backlight
lrwxrwxrwx 1 root root 0 2014-04-02 19:18:40.580222111 +0200 acpi_video0 -> ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0
lrwxrwxrwx 1 root root 0 2014-04-02 19:41:48.878394230 +0200 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight
Is the double entry intended or should there be only one?
Thanks!
Last edited by orschiro (2014-04-02 18:18:37)

orschiro wrote:Furthermore, I think it only stores the current brightness level for restoring on boot, correct?
Yes thats what the man page says
# systemctl mask systemd-backlight@backlight:acpi_video0.service
will disable the service and result in a 100% backlight setting with no adjustment possible...
I think both are needed
EDIT: right I've just tried
# systemctl mask systemd-backlight@backlight:intel_backlight.service
and now my backlight setting is remembered and adjustable --- maybe this .service isn't needed. My powertop doesn't show actual wattage dissipation for some reason so maybe you could try this & report back on any changes in power consumption?
However, the systemctl man page does say to use the "mask" option "with care"...
Last edited by Head_on_a_Stick (2014-04-03 20:15:47)

Planning to Buy iPad-3 concerned about Backlight Bleeding issue !

Hi Guys,
I am planning to buy the iPad-3, BUt with so many issues of Backlight Bleeding issues popping up. It looks a Rampant issue. Do you guys think I should wait some days before the First Batch of Munfacturing is sold out. Maybe once the Second Batch of production hits the stores this problem would not be there. But at the moment looks like Early Production and the Hasty process to get the Products out on Launch day and ready for delivery could have been the reason these issues slipped out of Quality Control. Do I wait like a month or so? I can do that, will waiting a month help ? I hope I dont get it in my iPad. I dont wanna go through the hassles of exchanging and stuff I would rather wait and buy a little late than go through these issues.
Cheers !
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Augustya, you are always free to wait until another round of hardware becomes available if you are concerned about problems people are having.
I would point out, though, that the discussion group is often looked at as an emergency room in a hostpital...you see only problems because no one healthy goes there. You can get a false sense of the magnitude of problems if you only look at the number of complaints showing up here.
On the news last night they said Apple sold over 3 million iPads last weekend...the couple dozen problems brought up on here is insignificant out of 3 million items. Another way of looking at the magnitude of the problem.
So if you have the ability to buy now, you can always go to the store, Apple if that is what you have available, open the iPad there, check it out (they come charged) and see if there is a light bleed problem. If so complain on the spot and ask for a different unit.
Or wait for another round to be manufactured...just do what you are most comfortable doing.

Display Components for issuing

Dear All,
How to display issuing components for which planned quantities has been fully issued:
System throws an alert message as : "Cannot display components for issuing; planned quantities have been fully issued"

Thanks for your reply..
but the scenario is
whether i can do any number of issue of production if planned qty and issued qty are equal for the same production order.
If i trying to do such scenario system throws an alert message as "Cannot display components for issuing;planned qty have been fully issued"
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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.

IdeaCentre B520 display backlight issue

I have a Lenovo Ideacentre B520 All in one. It powers on alright. But the LCD backlight does not come on. I can see a faint picture on the screen if i use a flashlight. The unit's Backlight converter board i noticed the capacitor on it is damaged. I can order a new board and replace it (easy enough). I was wondering if this is a common thing on these all in one units? Another person told me it could be the mainboard of the unit. I'd rather spend about$50.00 than 189.00. Also when i hook the unit to HDMI out and use a external monitor i see the lenovo splash screen, but when i install a hard drive after the BIOS screen it locks up and i have to restart, but if i do not install a hard drive, then i can boot ubuntu or memetst (just for testing purposes). Any ideas?

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.

24" iMac Display Backlight Failure

This afternoon, an issue developed on my iMac 24" (Mid-2007) where the top half of my display seemed like it flickered and burned out. What it looks like currently is a very dramatic gradient from dark to light. I haven't found any support documents or discussions that address an issue like this.
I tried restarting my computer and to no avail, the problem persists. Also tried resetting the SMC and booting from the Install CD, and this did not fix the problem either. The basic Apple Hardware Test did not identify anything wrong (I did not do the extended test).
I am suspecting that the backlight in my display is failing. I wanted to see if anyone else encountered this issue and any thoughts about what could possibly be wrong. I am afraid that my iMac might be Genius Bar bound if no solution exists. I'm scared of what the repair costs might be...
Any thoughts?
Thanks,
Maikeru-san

I experienced the same issue. When I don't use the iMac 27" and it automatically powers down I hear this ticking clock noise.
Troubleshooting Questions to Apple Support:
1) Is this automatic standby the same mode like manual standby mode?
2) it's not a display pitch sound but rather a HDD heads parking sound
3) Is this a hardware defect or a software issue?
My iMac is 48hours old and I bought it brand new directly from Apple.

HT4279 cinema display backlight repair

I have a 27" display that the backlight seems to be failing on. Some mornings the display comes on just fine but others it either fails to come on or it comes on very dimly. I suspect the LED backlight may be on the verge of failure but was wondering if anyone had any experience with Apple repairing these (including some estimate of cost?). If you power off the monitor and restore power, it comes up fine nearly every time. Have not upgraded to Yosemite on this computer yet due to issues (Safari crashes) on the newer version. I would be willing to repair the monitor myself but if it's not about 1/2 the cost of a new monitor I would probably just have Apple do the repair.

Since you confirmed that it is not the Mac. I requested that your posted be moved to the Cinema Display forum
Cinema Displays
BTW, this is the Mac Pro Desktop forum

Display Backlight Troubleshooting

I have an Early 2011 13 inch MacBook Pro Model #A1278 running Mavericks. There's a bit of background information that I've got for my problem.
A couple of months ago I suspected that some water might have gotten into my machine and fried the logic board as the display was not working. When I connected the computer to an external display, it would show the grey apple loading screen, and SOMETIMES it would show my desktop background (but only the "extended" part so I didn't have access to my tray or any menus). I took it into an Apple store and they said that the logic board needed replacing because there was corrosion from the water that I suspected. I thought this was a little off because if the video card were compeltely fried then there wouldn't be any images at all showing up on my external device.
My brother-in-law took a look at it and played aroudn with some firmware and it worked fine.
I'm not sure if all that has anything to do with my current problem, but I wanted to provide you with as much information as I could.
A couple nights ago I had my laptop conneted to the TV and the screen slightly opened when my cat jumped on it and slammed it shut. Everything seemed fine and the movie continued to play on my TV. When I unplugged the TV and went to use the laptop, I couldn't see anything. I can confirm that the display does work. When I shine a flashlight through the apple logo, I can see everything. It also works fine on an external device, which I used to confirm that the brightness control is indeed set to maximum. I also tried a few fixes that I found online including those resets where you hold down certain keys during boot up to reset certain systems. Nothing works.
There is one peculiarity that I haven't seen before and I'm uncertain if it's relevant - when I boot up my computer connected to the external display, I see the grey screen with the apple logo, and then it goes to this screen that's mostly white and at the bottom has narrow green rectangles that look almost like a bar graph along the bottom. Looks like something that migth show up when there's a problem with the video rendering process. It lasts for a couple of seconds, and then everything else works fine... my background shows up and I can use the computer normally.
Before I go out and buy a replacement display, I'm going to disconnect and reconnect the wire from the display. I guess it's possible that when my cat slammed it down some connections were severed... but I'm not sure if it's possible for the backlight to be disconnceted but the display still working fine, given it's just one wire connected to the logic board.
I'm wondering if you guys have any other suggestions at what this might be? If it's a software or driver issue that I can fix withotu going through the hassle of replacing the display I'd like to give those a shot first.
Thanks so muchf or all your help!
Justin

Top!

S10-2 display backlight out

Okay, so I received a client's computer from a corporate environment with the problem that the display had gone black. Now, the problem isn't that it's entirely black, but that the backlight is off. I know that this person has taken very good care of the computer and there have been no prior issues with flickering or anything else. This combined with the circumstances leads me to believe that this is probably not a hardware issue.
The computer is regularly used in conjunction with a projector, and it is in disconnecting from the projector that the backlight failed to resume normal operation. An external monitor works fine, but attempting to run it in clone mode produces flickering.
The system was rolled back to prior to the incident, not that I expected for that to do any good. All of the power options have been checked and double-checked. I reinstalled the display driver, which was already the most current. Will get back to you after a BIOS update but I was hoping maybe someone could shed some light on the problem in the meantime. I see that there are a number of glitches with lenovo displays, but none of the problems or solutions seem to be directly relevant to the current issue.
Oh, and the backlight is certainly off, not dimmed. Even the BIOS screen does not light up. Any ideas before I have to open it up?

A couple other things worth mentioning. The Intel display information cannot get the maximum vertical/horizontal information for the netbook's display, and the device manager at any time lists ~6 monitors. Once again, any help is much appreciated.

IPhone 6: Apparent backlight uniformity issue

My new Verizon iPhone 6 64GB exhibits a darker region on the top 1/8th of the display. It is most evident when displaying a white background. It is difficult to tell whether it's a chromaticity issue (AMLCD issue), a luminance uniformity problem (backlight), or something else all together.
Anyone else notice this effect on their new phone?

I've got the same issue issue iPhine 6 and its driving me nuts. I'm coming from an iPhone 5s which had a slew of display issues, and was hoping to be spared with these on the 6. The top section of my screen gradually fades to a warmer, yellower colour. It also appears to warmer in the top right than the top left.
I had the same issues with my 5s. The first 5s I received had the exact same problem with a yellowing near the top; I swapped this and received one that wasn't so noticeable. 8 months later, the screen came loose and had to swap it. This new one had yellowing down the left side when held in portrait mode. That was swapped for one, but with yellowing down the right In portrait. At this point, I wasnt allowed to swap any more as I'd already swapped it twice for non problematic display issues. But, for being good customer, and trying to see me right, I was authorised by the store manager for a CRU - a Customer Replacement Unit - an iPhone fresh from the box, ssealed, with all accessories instead of the normal replacement stock. This too has a yellowing near the top, albeit sutbtly. Even worse, this unit has scan lines running across the screen in portrait mode. After 5 attempts, I went into the display lottery and came out a lose at the other end.
My girlfriends gold iPhone 6 also exhibits the traits, and when compared to mine, looks worse. The one I did check to instore seemed perfect, no gradient whatsoever. Additionally, another friend who has a Space Grey iPhone also didn't seem to have an issue.
Since I've noticed this, I've noticed ALL of my other devices have this yellowing, but much more subdued.
My work 27" iMac (2009) is yellow down the screen.
My 15" MacBook Pro with Retina display (2013) is more yellow down the screen, as well as to the left.
My iPad (3rd-gen) is also yellow towards the top of the screen, as well as the left hand side.
I'm guessing some form of discolouration is normal, and the idea of display panel uniformity is probably a pipe dream. The problem is, the brief times I did check other iPhones (apart from my girlfriends), I didn't study for long periods of time and instead compared them to the yellow area of mine. They probably exhibit the same issue, but the whole screen may have a different white point throwing everything off.
I'll probably try and live with it for now, I'm not going to rush to the Apple Store to swap it – I'll make an appointment for next time I'm passing by.
After the iPhone 5s, I must be flagged as a "problem customer" by now; but when you're spending £700 for a device you use everyday, you want it to be as good as it can be...

Non-English characters not displaying correctly - Serious Issue

My corporate email is on a Lotus Domino server with Lotus Traveler installed.
I have set my PlayBook (with OS 2) up to syncronize with the corporate email trough Active Sync (see http://alturl.com/qh3nn), which works perfectly.
I have however noticed that in some emails special non-english characters are displayed correctly but in some emails special non-english characters are displayed as a black diamond with a question mark inside.
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Display, Backlight & OS issue

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