MacBook Pro :: Screen Flickering / The Screen Brightness Dims And Then Brightens Very Quickly?
Jun 15, 2009
Has anyone noticed a very slight flicker on their new MBPs? I have a new 13" and, every so often, the screen brightness dims and then brightens very quickly (happens in less than a second).The option for auto-adjusting the screen brightness is off so it's not that particular function.It's most noticeable on all-white backgrounds both on AC and battery power. Hard drive access doesn't seem to coincide with the dimming.
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Jan 13, 2009
My new macbook aluminum's screen has a tendency to gradually dim and then brighten on it's own, randomly. This is off the battery power and not AC adapter. Anyone else's macbook screen do this? This is not the screen dimming to sleep. it is constantly dimming and brightening, even as I type this post.
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Jun 1, 2008
So I have noticed a few times already, that the screen on my white macbook flickers to change the brightness level. It can do this while the computer is plugged in and charging, or if it's off the charger. It is definitely noticeable as it causes me to just watch what the screen is doing.
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Jan 14, 2009
I recently had to erase and install Leopard. I then restored everything from my time-machine backup. The weird thing is, before, when watching streaming videos from the internet, the screen stayed at the same brightness, regardless of whether there was any mouse movement, or touching the keyboard, or anything. Now, if I don't do anything, the computer dims the screen, as if i wasn't watching a video.
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Jun 20, 2009
So I installed Vista 64 bit on my Macbook Pro (Santa Rosa), I installed most of the drivers I can find, but I cant get the screen brightness buttons to work (F1 and F2)
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Feb 17, 2008
I have dual ACD's. How do I make it so that both screens have the same brightness? If I adjust the brightness in the display settings it adjusts the main screen, but then not the other one. How do I make them the same?
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Nov 5, 2010
I've had the new macbook air just two days now. Turned it on this morning, used it for like 5 minutes and the screen just started flickering, and the whole machine just froze on me! Had to do a system reset, but I'm a little concerned after spending over a grand on this macbook! Has anyone else experienced this? I'm actually thinking about returning the machine..
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Jan 28, 2010
My screen just started to occasionally have a flicker of a white line show up...It doesn't happen that often, should i worry? Is it worth taking it into apple? (Under warranty still) Since its not consistent i wont necessarily be able to show them what its doing..
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Feb 22, 2008
I usually have my Air at full brightness. I notice after a while if I leave it alone the screen dims a bit. If I move the mouse it is slightly dimmer and I have to manually adjust the display back to full brightness. Is there a setting turn this off? I have automatically reduce brightness of display before sleep turned off for both the battery and power adapter setting.
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Jul 3, 2012
I've just purchased a new macbook air 11.6 in and when watching movies (not in ful screen) the screen dims, Im assuming because of inactivity with keyboard, etc. I don't like to watch all movies in full screen, so how do I change the settings to allow for longer 'inactive' times? Meaning, I don't want the screen to dim after only 5 minutes.
Info:
MacBook Air (11-INCH, MID 2011), iOS 5.1.1
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Jun 28, 2014
My f1 - f12 keys have seemed to adopt a new function. When i use f12 to increase the volume it will also act like i am pressing f1 and simultaneously dim my screen. When i press f1 to dim my brightness it will also increase my volume. When i press f2 to increase my brightness it will also "press" the tilde key and vise versa. These are only a few examples and it seems that all my f1-f12 buttons have adopted a secondary function.Â
15" Macbook Pro Retina running OSX 10.9.3
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Nov 28, 2010
I have the 21" iMac and need to brighten the screen. How do I do this?
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Dec 31, 2010
When I unplug my charger from the side of my computer, my brightness on my MacBook goes down a few notches. Why does this happen and how can I fix it?
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Jan 19, 2009
lately, my mba has been behaving a little weirdly. its screen would suddenly become a little dimmer when the brightness in the room has not changed a bit. after a long while(15 min?), it'll turn brighter again by itself, and again without any change in the lighting of the room. the change is not big but obviously. any idea? can it be some software? or setting? or a defective light sensor?
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Dec 2, 2014
Am using a Late 2011 MacBook Pro with 480GB SSD. Using Yosemite. When I turn on the power it boots but before and at the login prompt it dims horribly but not all the time. Is there anything I can do to stop this from happening?
Info:
OS X Yosemite (10.10.1)
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Nov 15, 2010
The brightness goes up when you plug in your MBA, but then over time it just goes up and up. I honestly like my brightness pretty low (rarely more than half, typically at 3-5 notches), but it just keeps on going up and up. I almost never set it above half, but multiple times a day, I notice that it looks pretty high and it's at like 3/4 so I put it it down to about 1/3, but after a while, it's just up again.
Anyone else notice this? What is it, why does it do this? How can I fix it? I don't mind not having auto-brightness (even though I loved it), as long as my screen doesn't keep going up.
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Dec 5, 2007
Thing is I got hold of a 1ghz 17" iMac almost for free, it had a dead logicboard (I checked it with a voltage-meter), but I figured I could fix it and have a small hobby project-thingie going on. Well I just got a new logic board today, for a 1ghz 17" iMac g4.
Things is I only get a bright grey screen from my Mac when I boot. I've tried connecting it to a external display and that works fine. Everything is there.
I then reinstalled Tiger on it, with the computer connected to my external screen. And I still have the same problem. (I have now disconnected the ext. screen and is controlling the iMac from my MBP). So at least it isn't the installation.
So what is the problem? I can via an Apple Keyboard control the brightness on the blank screen, which would indicate that it does react to input of some degree.
I've read that if the inverter is dead or anything else is dead, you would get a rolling grey screen, flicker or something like that and not a steady bright grey. One thing I'm thinking is. What if somehow this logic board was for a 15" 1ghz imac g4? Can I check this?
I read that long thread about guys buying hi-res displays for their MBPs, and they had to replace some display profile? Could I maybe fix it with a different display profile-file?
I'm really confused by all this, and would appreciate any help I can get.
Model: PowerMac6,1
CPU-Type: PowerPC G4 (3.3)
and
the gfx chip is a GeforceMX4 with 32mb.
The display is a mode 9c27, manufacturer 610, serialnumber 00000, manufacture date: B84D7200.
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Jul 19, 2010
My Macbook is brand new! (Barely 4 months old) Just recently my laptop will flash a black screen. It starts from the bottom and quickly flashes up the screen higher and higher each flash! i have read on some other pages it is a bad inverter on the inner core of the Macbook. Other than that I do not know what to do!
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Feb 12, 2009
My screen dims after no use for about a minute. I have it set to do that after 15 minutes. I minute is too annoying (like if watching a video or something with no user input). Anyway, how do I make it stop doing this. It does not seem to want to go with the 15 minute setting I put in for screensaver.
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Jun 30, 2009
Why is this? Can I stop it from happening? I just put the brightness all the way, plug the MagSafe back in, unplug it and it is back to being dim?
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Mar 23, 2009
I just picked up a new MBP and loving it so far. Not sure if anyone else experiances this so I thought I would ask. When I have walked away from my Mac for a few minutes the screen dims down and has a faint beeping noise. When I touch a key or trackpad it is restored to full colour and the noise stops. Any ideas what or why this is?
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Nov 13, 2009
I bought iMac 27" from local apple store two days ago. Everything is fine execpt that there is some weird sound coming from the computer when the screen turns darker to save energy. Once I move my mouse to activate the screen, the sound goes away. I am saying the sound is so load, but it is still noticable and a little annoying in a quite room.
Update: I search "screem+humming+dim" and turn out actually a lot of iMac owners have this problem. Is it a technical issue Apple fails to resolve in general?
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Apr 27, 2012
I have had my imac 21 for about 5 years Model identifier say 7.1. running OS 10.6.8 Has been going well apart from a new hard drive. Suddnely tonight the screen flickers when you first turn it on for a few minutes and then settles down but dims down where whites become a light grey. Tried turning off the monitor screen power off and power saver.
Info:iMac, Mac OS X (10.6.8), ilife 11
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Dec 22, 2009
I have a 2007 aluminium imac running Snow Leopard. It needed to have a disk drive replacement recently under applecare. Since I got it back I have noticed a marked dimness in screen brightness starting about halfway down the screen, most noticeable against a window with a white background. It is pristine white at the top of the window but from about halfway begins to get dimmer. Its a bit like being in sunlight and the coming into shadow, or finding mist creeping into the picture.
I have tried recalibrating it but it makes no difference. It might have been there before the repair but if it was I didn't notice it or else I grew used to it but now I find it quite distracting and it does make text a little harder to read as I'm getting on in years and my sight needs all the light it can get. Is it normal or is it a sign of problems beginning to manifest themselves with the display? I wouldn't like to ignore it & find myself out of applecare cover when it does.
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Dec 7, 2008
First I wasn't quite sure about the issue, but sometimes I thought my MBA display was flickering. Then I found this thread
[URL]
Does your screen flicker too, when you watch this pattern ?
[URL]
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Apr 7, 2009
My white Macbook, the one i'm currently typing on; the screen keeps flickering. 've uploaded a video taken from my cell phone of the screen flickering. I love my white macbook but the screen keeps flickering until I keep adjusting the angle of the screen. Some days the screen flickering is minimal and I'll adjust the screen easily with minimal screen flickering. Other days i'll be adjusting for a few minutes until I can get it at an angle where the screen doesn't flicker.Here is the link of the screen flickering: [URL]I've noticed there is less/to no flickering at all the closer I adjust the screen downward, i.e., the closer it is towards the macbook itself being closed.
As for the Macbook itself, it was purchased in December 2006 and have had AppleCare since. In June of 2007 I took it in to Apple since I noticed the screen flickering very minimally only when the screensaver came on. I was then told a small soda spill was on the logic board and AppleCare would not cover it, though I was still covered regarding all cosmetic repairs, aside from that soda spill. It hasn't been till the past 2 months the screen flickers heavily and I'm just sitting at my desk adjusting the screen until there is no flickering so I can get my work started. I was considering selling my Macbook for anyone that wouldn't mind the screen flickering but i've upgraded this Macbook with a 500 GB hard drive and before attempting to sell it i'd rather fix the problem myself.
Everyone, I'm all ears. I'd love to fix this problem. If it means completely voiding my AppleCare warranty and opening up my Macbook, so be it. the warranty expires in 6 months anyway.
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Apr 5, 2010
I did a quick search of the forums, and so I know there are previous threads about this. But my screen is flickering a lot lately and so I plan on either sending it to Apple, Driving 3 hours to Dallas since it's the closest Apple store, or taking it to an authorized repair place here in town. I just have a few questions for anyone that has either had this problem before or maybe just has dealt with repair issues before.1. Should I wipe my Hdd?2. Which of the three options would be the better bet?3. Anyone know if they would just fix it or if they would replace it?
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Aug 26, 2010
I just got a brand new MBP (6,2 and 10.6.4) but it's not my first. My previous MBP had the ambient light sensor that I could turn on and off via the system preferences (as mentioned in this thread) so suffice it to say, I know what it looks like when the screen dims and brightens. (I loved hovering my hands over the speakers. It was like magic to my PC friends.)
Now, I'm having an issue with my new MBP. I have my preferences set to adjust the brightness based on ambient light. And since the light sensor has moved to the microphone, it still does that just fine.
My problem is that I'm experiencing random flashes of the screen where it dims quite a bit rapidly but only for a short moment before returning to the original brightness. This occurs randomly in different light settings but most importantly when the light around me hasn't changed at all. And it has occured about once or twice a day for the last few days. I've even tried pressing my thumb over the light sensor really fast to see if it was the light sensor but try that and you'll see that it's actually really slow.
My other problem is that my screen is randomly resizing/zooming in on things. (I suspect this may be me doing some trackpad trick I'm unaware of but I've tried everything I can think of to replicate it and nothing works) Anyways, say I'm on my desktop and mousing over (with one finger) to open a folder or file. All of a sudden, all of the folders resize drastically. Or I'm in Firefox and a site loads. Then all of a sudden (*insert poltergeist*) the website zooms in or out. (like when you press cmd + or -) And it's always zooming in, never out.
Does anyone know what is going on with this? I don't know if the two things are related or if all of this is just really really stupid user error.
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Jun 2, 2012
I went to a website yesterday, one that I go to every day, more than once. I was using Safari and saw a warning posted from the site owner about malware. It read this was happening with Chrome and Firefox. Everything was fine until I went back there maybe 15 minutes later and I got that warning page that he was talking about and now it was on Safari. You could click "ignore" or "continue" I think. I'm not sure cuz I don't remember. I thought it best to click out of the window. I opened a new window and a couple of weird things happened. I was scrolling down the the "page down" key and it would not stop. Then the screen started slowly moving up to the top left and disappearing in the process. It was weird. I hit Safari and and it came back. Then it seemed ok. I was as the library cuz I have no internet at home now. Then I went home and a little while later I was watching a download and all of a sudden it shut down quickly and the screen went white. The mouse was not "lit up", and I freaked - nothing worked - just a white screen. I did not know what was going on.
All I could think of to do was hold down the power button to turn it off. And I was afraid to do that - that it may never start up again. This morning I started it back up and the same thing happened. The start up sound lasted only a few seconds and then it was the white screen again. I looked at the battery underneath and all the battery lights were lit AND the power cord was plugged in. The light on the far left was blinking. I unplugged the power cord and the lights went off and then pushed in the button on the battery and all the lights went on for a few seconds like they are supposed to and then went off. My macbookpro was working fine and now it's not. It does not work at all. I'm using an older iBook and am at a local cafe wifi spot.
Info:MacBook Pro, Mac OS X (10.5.8), 2 GHz Processor, 1 GB Memory
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Sep 12, 2010
Apologies if this has been posted before, but rather than trawling through the thousands of threads, and before hitting the Genius Bar.... thought I would run this by the experienced MBP owners first.Got my first MBP (crossed over from PC back in April), and within the last couple of weeks, noticed that the screen is flickering intermittently.
Wondered if it's a glitch stemming from the switch from Graphics card as/when needed, or if it's an indication of something more serious and warrants taking it in to the Genius Bar... (don't want to part with it for days unnecessarily).
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