OS X :: Pixelated Horizontal Lines Shows In My System?
Feb 15, 2010
I've had my 15 inch Macbook Pro for almost four years and haven't had any major problems with it until today. I was browsing online when suddenly my screen was filled with this pixelated horizontal lines all across the screen.I restarted the computer... heard the start up chime then came a grey screen with the same lines, I can see the apple logo at the start up and the loading bar underneath it... then the screen turns blue, still with the lines and that is all I'm able to see
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May 30, 2012
My trusty imac has started displaying pixelated thin horizontal lines?
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Oct 31, 2005
I received my new 15" PB a few days ago and I can notice faint horizontal lines on every other row of pixels. I didn't notice this on the model before this or even the new iBooks, but working with photos, graphics, and video is aggravating with these lines.I called Apple Support and they seem to think this is a limited issue. I'm sending it in to get repaired or to get a new screen put on it...stinks when it's 4 days old and I'm already getting it "repaired"
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Apr 10, 2010
My computer (24" 3.06Ghz intel core 2 duo) won't start. When I try to turn on or restart my iMac I get vertical rows of pixelated lines across my monitor on the white startup background with the apple logo and it will either freeze up or the background turns gray and I get a message that says I should restart my computer. This has also happened when restarting using the Apple hardware test (which doesn't report any errors).
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Jul 2, 2012
My Mac has these crackly lines and crashes after a few minutes. It's a 24 inch 2.16 GHz Core 2 Duo with 2 megs of ram.
Info:
iMac, Mac OS X (10.6.8)
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Jun 14, 2007
On my screen when looking at whites or light blues, I seem to notice these faint horizontal lines only on certain places on my screen. For example, on the posting page, the light blue has very lite horizontal white marks on it, only in certain places. (I tried smacking it...(not to hard...I couldn't have damaged it right
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Dec 15, 2008
I was excited to see if the horizontal lines would be corrected but to my dismay they are still there. Looks like it's going back to Apple.
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Feb 21, 2010
i have been Noticing about the Horinzontal linesASA i open my MacbookPro i see No color but when you move your mouse you can see the lines... which cut the mouse partially, Even when you visit forums the line could be see
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Jun 27, 2012
I noticed that my built in iSight camera displays horizontal lines. Could this be an software issue that will be patched? It occurs in all applications, in all users and after an clean install.
Info:
MacBook Pro with Retina display, Mac OS X (10.7.4)
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Aug 24, 2014
I've had my macbook air 13" 256GB for four days now, I had it shipped to me in Canada because I wanted the ram to be changed to 8GB. When I'm scrolling around on the internet I see a horizontal line appear in the lower half of my screen, it disappears quickly so I haven't been able to get a screen shot. I have apple care, should I take my laptop in? Is this normal? I've been very careful with my laptop, I haven't dropped it or anything (I even have it in the Tech21 Impact snap case).
Info:
MacBook Air, iOS 7.1.2
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Oct 1, 2010
I have a MBP purchased in late 2006 so it's fairly old.
Lately I've been having really random lock ups and freezing maybe once every week or so. Sometimes when I hard reset it, there's a few horizontal lines across the screen, usually just on the background. It'll go away if I restart it again.
I used the onboard disk checker and no problems are detected. Is this a sign that the hardware will fail soon?
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Jun 4, 2007
I have had my iMac for two years now and when I first got it not a week later the video went out, well at that time it was still under warranty so I figured, what the heck I'll go get it fixed. Waited a month got it fixed got it back, works perfectly. It's now 2 years later and everytime I try to run anything intense, i.e. World of Warcraft, or any game for that matter (also happens when the majority of the screen is dark) these horizontal lines appear, the darker the screen is the more intense the lines but once I open a lighter/white document the lines disappear.
If I use the screen saver (flurry) is starts to do it also and you can clearly see RGB pixels all across the screen. I have been searching the internet for a good six months hoping someone will have the same problem, but that does not seem to be the case. If anyone has any idea what is going on, I have tried to reset the SMU and the PRAM but to no avail, I have also heard the swollen capacitors issue and have checked the board for swollen caps but all are flat. As far as specs go it is an iMac G5 2Ghz (Summer 2005).
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Nov 10, 2008
i got my imac this june, so i'm not sure what generation that makes it. (somone let me know plz) anyway just today i noticed I have some horizontal lines going across it. very faint and hard to notice, but i'm anal and i noticed them. My first instinct was to find out how to degauss this monitor.
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May 15, 2010
The screen started by having the occasional 'white out' where it would be in use and a white screen would fade in for a few seconds then usually return to normal.
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Jul 30, 2010
There are a bunch of horizontal lines that're plaguing my iMac. What's causing this?
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Aug 7, 2010
I have an Apple iMac 20" 2.16 GHz Intel Core 2 Duo. I work on photos in Adobe Photoshop CS4. Am running Snow Leopard 10.6.4. Am getting thin horizontal lines across the surface of the monitor. Reduced the resolution of the monitor from 1680 x 1050 to 1344 x 840. For a while, it was better but the lines are back again. Any idea what is causing this problem? Is it software, a setting on the computer or maybe a problem with the video card? Hope it is not a bad video card.
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Apr 23, 2012
I am having issues when watching video's on my mac, which seemed to happen after upgrading to OS Lion.
When watching video's horizontal lines float up the screen, it tends to happen when the camera changes or something moves. The line almost disjoints the picture slightly as it floats to the top of the screen. This is obviously very distracting!
Info:
iMac
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Sep 1, 2014
I filmed a show with 2 different cameras (one is a canon vixia, the other is a canon dos 7D, i realize the quality is different for them) and I used the multi cam editor to match h up the clips and audio file to switch back and forth. I think i created proxy media to use for the multi cam clip. Whenever i export my movie, the movie plays with horizontal lines, and whenever there is faster motion, the person gets blurred. What is making final cut pro x export like this? How do I fix this? I've tried exporting with Apple ProRes 422, Apple ProRes 422 (Proxy), and H.264, but all video files have the lines going through it and the motion is a bit blurry.
Info:
MacBook Pro (Retina, 15-inch, Mid 2014), OS X Mavericks (10.9.4)
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Aug 31, 2014
I have a 2007 Mac Pro 1,1 with attached 24" apple display and utilizing 5 GB Ram and maxed out on internal hard drives. It's been a flawless workhorse and I mostly tax it with Photoshop which it does well. Well, yesterday, I was viewing a small video on my Mac when this issue occurred. Suddenly I saw these squiggly looking horizontal lines on my display. Then I saw a spinning beach ball. I had to shut down.
I double checked my display cables in case any were loose - no issues. Restarted without issue. Went back to work on my computer - no issues doing ordinary tasks such as opening windows, moving files and surfing the internet. Went back into Photoshop and resized several dozen images without issue. Then, this happened again... restarted. Zapped PRAM just in case. Fired up Tech Tool Deluxe (older version 3.1.3) and it found NO problems, I passed all tests.
Then... out of nowhere it crashed again, third time... I don't recall what I was doing to be honest. I shut down my Mac last night and this morning have spent an hour on and so far, so good. However, I'm not taxing it by doing anything intense. I need to use Photoshop for a project I'm working on so I will do that soon and see if this issue repeats.
I've tried searching the forums but can't find anything conclusive to my specific issue. What else should I do? What else should I check? Is this hardware or a software issue? I have temperature monitor installed - should I be looking at specific temperature increases and if so, where?
GPU going bad on logic board? This is a really close up image taken with my iphone, obviously the lines aren't this large.
Info:
Mac Pro, Mac OS X (10.6.8)
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Dec 6, 2014
when I start up in Safe Mode and only in Safe Mode in my iMac (mid 2011- HD 6970M 2048 MB) appears white horizontal lines. I changed already the graphic card almost before a year.
Info:
iMac (27-inch Mid 2011), OS X Yosemite (10.10.1)
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Jan 1, 2010
My iMac boots up (OSX 10.4) and when the desktop is about to appear the little spinning wheel start to get "fuzzy" (yes only the wheel), then when it's time for the desktop to appear the entire screen goes blue with horizontal lines across it. I can see nothing on the screen at all except that mess.
Weird thing is, if I boot using the install disc, everything is fine. he display never screws up. So I am guessing some file or something is corrupted in OSX?
I was going to do a restore, but since there have been some updates since I got it, I am worried about that whole process and not being able to get to my pictures and what not on the HD. The procedure where I can archive the current OS and reinstall the original seems like my next step.
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Jun 14, 2012
Occasionally there are random horizontal lines on my display. Computer sometimes freezes or screen turns black requiring a hard restart.
Info:
iMac, Mac OS X (10.6.8)
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Jun 5, 2014
It's been happening for a few weeks and I really need to know if it's something bad or not because I can't afford a new laptop.
Info:
MacBook Air (13-inch Mid 2011), OS X Mavericks (10.9.3)
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Nov 1, 2007
I thought it might have been a graphics card problem, but these lines move with the apps even in expose mode.
Its driving me nuts. I had this problem before while on 10.4 Tiger and now again on 10.5 Leopard (fresh install on new hard drive).
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Jan 27, 2009
I have a 2.8GHz Intel Core 2 Duo 24 inch iMac in may-june 2008. I bought it because I wanted to avoid the 20 inch display problems. Somehow I feel I ended up with the wrong side of the deal. Check the snapshot please:
The picture was taken using my iPhone so it's not exacty Cannon quality, but still, it describes my problem in 1000 words
What would you do in my place. Would you risk getting another one, maybe a crappier one? It is ludicrous that you take part in a russian lottery when buying a fairly expensive product like a Mac.
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Nov 2, 2009
Over the past month I have encountered a number of bugs with Snow Leopard on my MacBook Pro (mid 2006). Ever once in a while, usually during high performance task (like watching flash or encoding with handbrake) the temperature of my cpu will spike to 85-90 degrees celsius and then the system freezes.
During this freeze, I can still move my mouse, but I am unable to click on anything on the dock or any program. Moving the mouse over the dock does not invoke the magnification either. I have to do a hard reset to fix the problem.
Also every once in a while, a long blue horizontal line will appear in on the screen. (sometimes their in iChat windows, sometimes safari, and sometimes the desktop as shown in the photo).
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May 8, 2012
Recently I have noticed that in certain videos, specifically those that have a lot of movement and blinking lights there is a horizontal line that will appear and float up during playback. I tried using different media players and the floating line remains. I have also tried to de-interlace in VLC to no help. I will also add that all of my drivers and software are up to date.
I'm currently using:
iMac
Version: OSX 10.7.3
Processor: 2.5 GHz Intel Core i5 processor
Graphics: AMD Radeon HD 6750M 512
Info:
iMac, Mac OS X (10.7.3), iMac Version: OSX 10.7.3 Processor:
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Jun 5, 2012
I purchased a late 2006 intel core duo iMac 20'' with an upgrade to os Lion. I've been using it for less than 24 hours, and it has managed to freeze up on me twice, with a followed appearance of pixel abnormalities, horizontal lines, etc. I did my research and it seems to be a graphics card problem, which is a Raedon ati x1600 ,256 mb.
Info:
iMac, Mac OS X (10.7.3), Late '06 iMac/2.16ghzICD/2gb
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Jun 17, 2012
Starting this morning, when I boot up my MBP, it seems fine through boot up, but when it reaches my desktop, the taskbar, dock and desktop icons never show up and instead I have horizontal lines across the screen. I tried booting up from my external hard drive, but I have the same issue. I can see the mouse and move it around and the desktop wallpaper shows up sometimes, but nothing else shows up. When I boot up in safe mode however, everything looks fine. I have not upgraded anything anything recently, either hardware or software.
Info:
Macbook Pro (Original), Mac OS X (10.6.4), AEBS, Apple TV
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Jun 3, 2014
My Late '11 15inch Macbook Pro went bonanas today. When it starts up there all these black horizontal lines running across the screen jiggering jabbering everywhere and I see three apple logos (due to GPU glitch I am guessing) after loading everything goes white and my laptop heats up and battery dies within like half an hour. I was bummed but then like after restarting a bunch of times and recharging my laptop it starting up normal again! I was super happy, but then it experienced the same crash next time the battery died. So, this has been going on and off;
Info:
MacBook Pro, Mac OS X (10.7.3)
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