MacBook Pro :: Brightness Randomly Turns Back On When Turned All The Way Down
May 19, 2012
This is a strange issue I have had with my Macbook Pro for a while now. Whenever I am in a situation where I am only using my computer for say, listening to music purposes, I like to turn the brightness all the way down. Whenever I turn the brightness all the way down, however, after a few minutes it will go back up 1 pip of brightness on its own. Once I come into contact with the trackpad, however, it goes back down. Then it will go back up 1 pip on it's own again, and go back down when I touch the trackpad. It continues to do this and it's quite annoying.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Apr 29, 2010
So I've recently purchased the new 13" MBP, and to my understanding, there is a light sensor that turns up the brightness of the backlit keyboard and screen when in dark environments.
However, the problem with my MBP is that when I turn on the lights in my room, the screen brightness and backlit keyboard both turn brighter, and when I turn off the lights, the screen and keyboard grow dimmer, which is exactly the opposite of what is supposed to happen.
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Dec 5, 2010
At least, it seemingly randomly turns off. I can be surfing the web or whatever like normal, but then after a period of time the monitor goes black. I can see that the computer hasn't shut off, but it's as though the computer is on its lowest brightness setting. It can be temporarily fixed some times if I lower the brightness all the way via F1, then put it back up, but if it goes up more than 3 or 4 boxes it goes black again.
It also goes black if I were to move the monitor any time during this whole thing. I've heard things like an inverter cable and board, but I have no idea what's going to fix this. This is my only computer, I use it for all my school work, if it breaks permanently I'm screwed.
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May 14, 2012
1. Screen Brightness is on. Desktop functioning as normal, according to the brightness set.
2. Randomly, the entire screen brightness will switch 'off' - but not go to sleep - it is set at the brightness level, as if you would have turned it all the way down manually. Automatically, my screen goes from:
3. After clicking the brightness button on the screen - when I look closely - the brightness control is set at its previous level, but the screen is not at that brightness! darkest screen (above, right) + brightness settings up
4. In order to solve the issue, I have to hold down the minimize brightness button and then turn it back up, from the lowest setting. This only works about one in five times. All other times, the screen briefly flashes and then goes dark again.
Info:
MacBook, Mac OS X (10.5.8)
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May 10, 2009
I recently bought a new Kensington Slimtype keyboard for my PowerMac G4 (dual 867mhz); it's running Leopard and everything other than this is working beautifully. For some reason, whenever it goes to sleep, it turns the brightness down to it's lowest setting - not a huge problem, I just turn it back up. Just wondering if anyone else is having this problem and if they are, how did they rectify it?
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Oct 31, 2010
Anyone else noticing their new macbook air freezing randomly and the screen just turns completely black? The back light is still on but nothing is on the screen.
None of the buttons work, can't force quit anything, i have to hold power button to turn it off then back on.
It has happened to me twice already, first time when i was installing the adobe suite, second time is when I was working on a school assignment with a simulation app (not cpu or memory intensive AT ALL).
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Feb 23, 2012
my wifi randomly turns off on my IMac. I have 10.7.3 installed
Info:
iMac, Mac OS X (10.7.3)
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Nov 30, 2008
A couple of nights ago, my iMac randomly turned on in the middle of the night, so I held the back power button to shut it off. Later that morning, I tried to turn it on and was left with this screen (see attachment). I was very confused. After trying to boot into target mode, safe mode, the assorted...I restored the computer. It seems to work fine now, but I'm still wondering...what the happened?
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Apr 2, 2007
The screen on my MacBook will randomly adjust brightness or sometimes flicker.Does anyone else have this problem or know how to fix it?
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Jun 6, 2014
I was work uns in macbook pro attached to a monitor and keyboard+mouse and suddenly it began to get slow and I noticed the battery icon in 0% but with charging status, after that it turned off and I couldn't turn it on again... I let it charge but the charging bar on the side keeps blinking the first led and do not charge further.
Did I lose my battery? My motherboard is dead? I made the same and the charger light responded as it was normal.
Info:
MacBook Pro, OS X Mavericks (10.9.3)
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Mar 18, 2010
A few weeks ago the display on my 2008 Macbook started going black randomly. I wouldn't call it a flicker, because when it goes black, it does not come back on unless I turn the brightness all the way down, and then back on again.
Sometimes it will go black, I turn the brightness all the way down, then back on again, and it will stay lit for a few minutes. Other times, the screen flashes when I turn the brightness up to 1 but then goes to black immediately. There are times where it won't stay on for more than a split second for almost half an hour, and I can't do anything but keep trying to turn it on in the meantime. Eventually it will start to work for either a few minutes, or half an hour, or longer, but if I turn it up too bright, it goes to black again. I keep it at 2/16 brightness once it starts working. If I'm feeling lucky I'll go up to 4/16.
So after doing some research I decided to try and replace the inverter. I just did this successfully, and after a few minutes the problem returned. So now I'm at a crossroads. I can take it apart again and replace one of the inverter cables, but I'm not too hopeful about that. I'm out of warranty and will not pay hundreds of dollars for Apple to repair it. My long term plan-B is to buy an LCD monitor and wireless keyboard to use it in clamshell mode.
So my question is if anyone has any other ideas about what may be wrong, and what I can do to fix it. The display itself appears to be fine. My dad thinks it may be a motherboard issue. Any thoughts?
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Nov 9, 2009
My Mac will freeze at random moments (not while running any particular app or program) and go to a blue screen, after a few seconds it clears up by itself. Sometimes it will happen several times in a row, sometimes 10 - 15 minutes in between.
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Aug 23, 2014
So last night I was using my laptop (Macbook Pro early 2011, not fully sure) when it completely shut off. I press the power button and nothing happens. I have tried unplugging the battery from the logic board and then plugging it back in, but nothing happens. Checking the battery status and it doesn't seem anything unusual, the LEDs light up from left to right then fade out. When I plug in the charger I get the amber light, then when I press the power button it turns green for a little bit then goes back to amber. No fan or anything. Was wondering what it might be?
Another question, the inside of my mac is kinda dirty, could that have anything to do with it? Like it caused its own form of static electricity?
Info:
MacBook Pro (15-inch Early 2011)
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Mar 9, 2012
My macbook will not shut down. I have to 'force' a shut down. I don't like doing that. I heard forcing your laptop/computer is not good for it. I try clicking the 'apple' on the left hand side, I click shut down, and it just automatically turns right back on. I don't like forcing my poor laptop to shut down.
Info:
MacBook, Mac OS X (10.6.8)
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Jun 20, 2010
Basically, for login pages (such as facebook) my mac used to auto complete my login name, much like it auto completes a url i have previously visited when i go to type it in. It started doing this spontaneously a couple of days ago. How do i turn it back on?
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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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May 15, 2010
I am new to this forum, but hoping I can get an answer here. When placing my Macbook Pro in sleep mode by closing the lid, it goes into sleep mode, but immediately turns back on (with the lid closed), then after a short time goes back into sleep mode and then immediately turns back on. It keeps cycling like this. Any clues to why it will not stay in the sleep mode?
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Apr 9, 2012
screen goes black, laptop seems to have not turned off but nothing can turn the screen on. seems fine after a reboot but problem recurs at some random future inconvenient point in time. problem is annoyingly inconsistent - it will occur at random (no discoverable software or hardware conjunctions), sometimes around once weekly, sometimes less frequently. have already had it in a mac repair, said they fixed it, something to do with graphics card firmware.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Jun 19, 2012
How can I get the iMac turned back on?
Info:iMac, MacOS X (10.5), Happened after upgrading iTunes.
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Sep 16, 2009
I press control + shift + eject on my new imac, and the screen turns off as promised. However, most of the time, actually, almost every time -- the screen comes back on after a second or two.
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Aug 24, 2009
i tried pressing F6 but it doesnt work,
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Apr 18, 2012
For some reason when i turned my imac on tonight my bluetooth is turned off and my wireless mouse is not recognized so i can't use it to turn my bluetooth back on. Not what do I do?
Info:
iMac, Mac OS X (10.7.3)
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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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Sep 11, 2014
My Mac pro will turn on. When the progress bar is finished filling in the mac turns off.
Info:
MacBook Pro
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Nov 1, 2006
So I've got a powerbook G4, thats 8 days past its warranty. Conveniently, it now won't turn on. It won't wont boot from CD. If I turn it on, I get a gray screen that usually just turns my computer back off, if thats not the case I get a screen that shows the finder icon and a question mark and then turns off.
All it will do is boot into open firmware mode. Currently the install disc is inside of it and I've tried booting the cd using "cd:, bxi" and "dir hd", and it can't open both. Does anyone know how to wipe the HD, and start the installer using firmware? Otherwise, I think I'll have to take out the harddrive and plug it into an external case and then wipe it.
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May 26, 2012
It keeps saying Ethernet cable is unplugged but it's not. And then it will turn back on and seem fine until it says unplugged again a few seconds later.I just installed OS lion and before I did ,this never happened.
Info:
iMac, Mac OS X (10.7.4)
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Jun 1, 2012
Web pages randomly jump back a page or two for no reason. It sometimes happens when I'm not touching the trackpad or the magic mouse. I am using a MacBook Pro O SX Version 10.7.4. It happens with Safari, Firefox and Google Chrome.
Info:
MacBook Pro (13-inch Mid 2010), Mac OS X (10.7.4)
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Sep 24, 2009
So, i have this HP w2207 monitor that is amazing, but lately it has been randomly going black, then coming right back on as if nothing is wrong... its not trying to sleep or losing power because the indicator at the top is normal.
There is no regular interval, sometimes it will do it 2 or 3 times in a row, some days it won't do it at all.
Please help, this is super annoying!!!!
(this is on my G5, btw) specs are below.
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Apr 17, 2012
I was using it like any other day and it just turned off. Now it wont turn back on even with switching outlets!
Info:
iMac, Mac OS X (10.5.8), iMac G5 w/iSight
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Sep 4, 2014
My mid-2014 15" Macbook Pro randomly "loses" its retina display at the top menu (becomes pixel-y), where the battery, sound, and wifi logos are (on the top right side of the screen). A restart fixes the issue, but I want to know if this is an issue that can be fixed?
Info:
MacBook Pro with Retina display
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