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)
When I turned my iMac on this morning (iMac G5 PPC 10.5.8) it went through all of the "normal" steps (gong, grey screen, apple logo, progress wheel, blue screen) and stopped at the blue screen. Thinking it was just a fluke, I shut the machine down and restarted, only to have it stop at the blue screen again.
After disconnecting everything going into the iMac except the keyboard and mouse, I attempted to boot into safe mode but it stopped at the blue screen again. I tried single user mode too but I didn't get any further than the blue screen.
Next, I flashed the PRAM (big gong, single quieter gong) and afterwards it came to the blue screen.
I reattached my external drive and selected to boot from a 2-day old backup. Using the backup I was able to log into both my regular account and my "test" account (without login items).
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.
View 17 Replies View RelatedThis week I discovered that the hard drive on my white Core 2 Duo macbook is failing. It's of course out of warranty. I have superduper and am in the process of getting things ready to swap out the drive for a new one. Before going ahead with the new install, however, I wanted to test out the bootability of my superduper backup. I held option while restarting and chose to boot from the backup icon. The OSX tiger splash screen appeared and slowly booted up but then a login window appears asking for a name and a password. I assumed it was asking for my administrator name and password.
Therefore I entered that information. However, after entering the information and clicking on the login button the window shook back and forth and shook off my password as if to say "No. No!" I tried entering the admin information again and again. I tried the short name. I tried to reset my user information. Nothing worked. So, I tried to redo my backup thinking that there might be some issues on that side of things. But now my backup isn't complete. It's lagging at about 14 gigs shy of the full copy. I want to get this machine back to working order but am running stuck.
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.
View 7 Replies View RelatedI 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.
View 1 Replies View RelatedMy 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.
View 18 Replies View RelatedI'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
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
 Ever since Yosemite update, my Login Screen Font displays only [A] [A] [A] [A], but will display normal font in Safe Mode. I've deleted third party apps, and ran disk Utility, but problem persists. Also getting freezes and SLOW performance, Wifi cut-outs, etc. I'm attaching a copy of my diagnostic test ran.
Start time: 12:48:54 12/03/14Â Model Identifier: iMac12,1System Version: OS X 10.10.1 (14B25)
Kernel Version: Darwin 14.0.0Time since boot: 6:08Â SATAÂ Â Â ST31000528ASÂ
FileVault: FileVault master keychain appears to be installed Diagnostic reports  Â
2014-12-02 System Preferences hang  2014-12-02 pkd
[Code]....
Info:
iMac, OS X Yosemite (10.10)
I am getting weird fonts on my Login screen after I updated Yosemite to 10.10. Also there is a pop up screen that says "Messages Agent wants to use the 'login' keychain."
View 4 Replies View RelatedMy Macbook (2012) has been running incredibly slow since I updated to Yosemite. My apps keep crashing, including safari and chrome and I'm sending about 5 reports a day to Apple whenever they crash.
Chrome crashed while I was writing this - it happens routinely.
But my biggest concern is that when I restart my computer, the login screen looks like this:
It says "update needed" where it should have my name and image. Â
I've found a few solutions on here about turning off the firevault and trying to restart the computer again, but this image was taken on my restart try after made that change. I do know that it says I still have a mavericks update available. I'm not sure how that happened because I updated everything before I moved to Yosemite, but my apps store still says I have an update for Mavericks 10.9.5...
Info:
MacBook Pro (13-inch Mid 2012), OS X Yosemite (10.10)
I recently tried to install OS X Yosemite. unfortunately during the install my laptop was unplugged and the installation failed mid way through. Each time I start my mac I get to login screen and after logging in get an error message and told to restart and try again - which does not resolve the issue. Guest login do work to the safari screen.
The error message reads: You need to restart your computer. Hold down the power button until it turns off, then Press the power button again.  Behind system code, including:Â
panic(CPU 2 caller 0xffffff 80005418bf):
"process 1 exec of /sbin/launchd failed, errno 45"@/sourcecache/xnu/xnu-1699.32.7/bsd/kern/kern_exec.c:3546
Debugger called: <panic>
Backtrace (CPU 2), Frame: Return Address
0Xffffff80e8423e00 : 0xffffff8000220792
7 more lInes like the one aboveÂ
BSD process name corresponding to current thread: initÂ
Info:
MacBook Pro (15-inch Late 2011)
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.
View 3 Replies View RelatedWhy 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?
View 3 Replies View RelatedI 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?
View 3 Replies View RelatedI 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?
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
I have a problem with the Macbook Pro (Late 2010) of my friend. He installed MacBook Yosemite last week and it worked fine. But now when he start's his macbook it is booting normally but when the progress bar of the booting screen is at about 30% the MacBook just shut down.Â
PRAM and SMC Reset were not successfully, and i have the same problem when i am trying to get into Safe Mode. Recovery Mode is enterable, and i already copied some important files for him through the terminal.Â
Info:
MacBook Pro, OS X Yosemite (10.10.1)
Until recently I have been able to login one time with a password to get to my desktop. Now I have to login twice. I am running Yosemite, whatever the newest version is. I have checked every setting I can think of to no avail.
Info:
MacBookPro OS X Yosemite (10.10.1)
My second time using this computer and can't login even though i just changed my iCloud id password. I'm login as guest, not admin...
View 1 Replies View RelatedOk so today my 27" iMac (10.6.2) was acting kind of weird. In safari and chrome webpages would spontaniously crash for no reason (on my macbook, the same webpages were fine). So, to try and fix this issue, I decided to restart my imac. After all the applications quit, I was left with a blank screen with my wallpaper. It stayed like this for several minutes, so I decided to just hold the power button to force the imac to turn off. When I turned it back on, my user name was not displayed in the login window. All there was for accounts was "other" and a network symbol. When I click other and entered my user name and password, it did not work. I am sure I was using the correct password and username. I also tried: username: root, but that also did not work. So i rebooted again and the same "other" still was there without my real account. So i booted into my Mac OS X install dvd and I repaired the disk and all the permissions (there were a lot of things to repair). I thought that this would solve the problem, but it did not.
View 3 Replies View RelatedHi! Im new to the forums but i really need help with something and i was hoping someone here could help me out. So I just installed Tech Tool Deluxe onto my macbook and then shut it down later. I went back to use it again and when i turned it on a login screen appeared asking me to put in my password. I did that and the screen turned blue (looking like it was loading) and then went back to the login screen. Every time i put in my password it just takes me back to the login screen. I have had my mac for a while and i dont want my hardrive to get wiped out so what do i do? Thank you for looking
View 1 Replies View RelatedI installed Windows 8 with Boot Camp Assistant however I couldn't boot into OS X anymore. I get a prohibited sign on boot. If I press Command+V on boot it says "Error loading kernel cache (0xe)". Windows 8 can still boot without problem.
Info:
MacBook Pro (Retina, 13-inch, Mid 2014), OS X Yosemite (10.10.1)
I tried uploading pictures with my s.card and then I plugged in my back up storage disk to transfer pictures and then my computer stopped working as if it was overloaded or something.... I tried forcing quit but that didn't help any. So I just shut it down in hopes that when it restarted it would work but now when it restarts the login screen comes up and after I type my password it just stays on snow leopard default screen(purple sky) and stays there.
Info:
MacBook Pro (13-inch Mid 2010)
What can be the issue or how can I diagnose this. The screen dims sometimes so low nothing is visible. It is happening more often now and can happen after its been on only after 10 min.
Info:
MacBook, Mac OS X (10.5.8), Screen dims un-readably low
I've had this 2.0 Ghz 1gb ram Macbook since September 2007 and this was the first time I've ever had any problemas with it. So let me start from the beginning.
It all started this year. One day I picked up my Macbook and turned it on and I noticed that the screen was blinking quite a lot... then it started to get worse to a point I got really worried and it started to annoy me. Sometimes I'd boot it and Leopard would be changing my wallpaper every second (it's supposed to change my wallpaper everyday according to what I've setup in system preferences). While blinking the colors would get messed up and when I closed the Macbook and let it on, sleeping, I'd open it and it would be on the blue screen as if I had just turned it on.
It's worth mentioning that I was running a version of Leopard I downloaded from a torrent and had installed it from an external hard drive. So I thought I should try to format the machine, erasing everything and installing a new and original version of Tiger. Once I installed AND got all updates installed as well it was running perfectly. The blinking had gone away.
Yesterday I installed some new updates, booted and used it fine. Today I turned it on and it won't go past the blue screen and the apple logo won't show up as well. My Macbook just won't boot... I've tried booting on safe mode, booting with the tiger dvd on, i've tried resetting the pram and everything else I could do. The apple logo won't seem to appear and the machine won't boot.
First the blinking screen and now it won't boot.
Any other suggestions besides taking it to a support store? It's worth mentioning as well that I live in Brazil and support to Apple computers isn't as great and cheap as it is in the US. I've had this Macbook for less than 1 and a half year.
I have a two and a half year old mac book. It's not booting further than a white screen.
What has happened I think is that it was run flat. I have though charged the batteries up to two green lights on the battery.
It's making hard drive noises but sits on the white screen.
Any ideas. This is my main work machine and I rely on it.
A few times now, maybe once a month, I've restarted my (first generation, 2006) Macbook and gotten nothing but a black screen, while the computer seems to be continuing to boot in the background. The boot-up sound plays, and if I leave it to finish, the screen goes from black to a dull grey, and I'm able to shut it down by hitting the power button and pressing Enter, as if the shut-down dialogue screen has appeared. The pattern so far seems to be that if I shut down down mid-boot, by holding the power button, the next boot will still have a black screen; but when I let the boot finish and shut down from 'within' Mac OS X, the next boot works normally. I restart the computer once or twice a week, and this only happens occasionally--but it has been happening repeatedly.Â
Info:
MacBook, Mac OS X (10.6.8)
I have an MBP about 2 yrs. old. This morning when booting up, the computer made the chime sound and appeared to turn on but the screen stayed completely dark. I tilted it around and tried to see if the backlight was just dead, but there appears to be absolutely nothing on the screen. Furthermore, the little light that normally pulses while the computer is sleeping is on, though not pulsing, anyone know what's going on?
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