Why is my MacBook display behaving strangely?

I am using an alumin(i)um MacBook (13", late 2008 model with multi-function glass trackpad). In the past couple of weeks, the display has started to behave strangely. The screen seems to freeze (meaning any mouse movements or keystrokes do not display), and then the screen begins to fade to grey. It seems to be resolved by tilting the display until the MacBook "wakes". There has also been some occasional flickering of the display, although far less frequent. Could someone help me with this? Is it something like a loose connection, and, if so, how should I deal with it? (The MacBook is now out of warranty, so my next step would be my local Apple store). Thanks in advance!

Same thing happening to me - began about four weeks ago, two weeks after warranty expired. Has gotten to the point where it's difficult to use the computer - don't get through composing an e-mail before it starts to fade - now know that even though computer display is frozen, the keystrokes are still getting through, so be careful what keys you press trying to get it to pay attention!
I believe it's going to turn out to be a connection problem between the computer and the display in the hinge area. I found out yesterday that as it freezes, and I start to pick it up off my lap and put it aside, if I pick it up with my left hand near the lower left of the keyboard and my right hand behind the display, down low near then hinge, and pulling slightly towards me, this fixes it (for a while), and this is (for me) the most reliable way to wake it back up. I've seen references elsewhere to this being a simple problem where a connection is maintained with a black foam pad to provide pressure to the connection. I think the foam must degrade or lose resiliency (apparently at 12.5 months from purchase!) and there may be a simple solution available. When I figure it out for this particular model, I'll post my conclusions.

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My Macbook Air behaves strangely with my USB devices.

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USB draws power from the MBA, and MBA will shut them down if too much is taken. Try a self-powered (not USB-powered) hub, to see if the AIr acts better. Costs about $25 at BestBuy.
May not tbe the final solution, but no a bad idea anyway.

Why is my MacBook Display Overlapping?

Ok so I bought this MacBook 4,1 for taking notes in class and it has this really odd issue in which the right part of the screen is shifted to the left about a quarter of an inch. This, in turn, causes overlapping in pixels on the left side of the screen. It is as if part of the menu bar is underneath itself. There are pictures linked to demonstrate this better. Does anyone have any idea what could be causing this? Is it the screen or the x3100? Any help is greatly appreciated.
Pictures: https://picasaweb.google.com/bzurawlow/EbayHTML#

Same thing happening to me - began about four weeks ago, two weeks after warranty expired. Has gotten to the point where it's difficult to use the computer - don't get through composing an e-mail before it starts to fade - now know that even though computer display is frozen, the keystrokes are still getting through, so be careful what keys you press trying to get it to pay attention!
I believe it's going to turn out to be a connection problem between the computer and the display in the hinge area. I found out yesterday that as it freezes, and I start to pick it up off my lap and put it aside, if I pick it up with my left hand near the lower left of the keyboard and my right hand behind the display, down low near then hinge, and pulling slightly towards me, this fixes it (for a while), and this is (for me) the most reliable way to wake it back up. I've seen references elsewhere to this being a simple problem where a connection is maintained with a black foam pad to provide pressure to the connection. I think the foam must degrade or lose resiliency (apparently at 12.5 months from purchase!) and there may be a simple solution available. When I figure it out for this particular model, I'll post my conclusions.

Why does my macbook display keep turning off

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Try a PRAM reset:
http://web.archive.org/web/20140711222006/http://support.apple.com/kb/ht1379
If no success, reinstall the OSX. (a guess on my part)
Ciao.

Why is my Macbook pro display text background yellow instead of white?

Why is my Macbook pro display text background yellow instead of white? This problem is intermitten and when it occurs the yellow tint flickers.

Same my Mac book pro problem please solved My MacBook Pro went to sleep mode (I used Energy Saver, let my MacBook Pro to sleep mode when inactive for 2 minutes). I rubbed TrackPad to let MacBook Pro awake. But I was shocked that my screen is mirrored (Look fourth photo). So I put MacBook Pro to sleep mode again and awake it, display appeared (Look fifth photo). So I turned off and turned on, display appeared (Look sixth photo). I turned off five times and turned on five times, display appear normal screen size.
I didn't use MacBook Pro for 2 days until today, I want install The Sims 3 World Adventure, Fast Lane Stuff and High-End Tech. I just turn on my MacBook Pro, display appeared (First to third photos). I tried same method as 22 June, but still never work as normal display. How can I fix it?
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2.4GHz i5
4GB
500GB HDD
Thanks for help me.

Why does my macbook pro retina display shutdown while entering the administer account

why does my macbook pro retina display shutdown while entering the administer account

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Why does the middle mousebutton behave so strange in firefox 4.0?

Since I upgraded to Firefox 4.0 from 3.6.** my middle mouse button behaves strange. When I press the middle mousebutton to scroll in a website and it happens that I release the mousebutton with the mouse over a link, the link gets opened in a new tab. The same happens with the links in my bookmarks toolbar. I am aware of the functionality of opening links in new tabs with the middle mousebutton, but in pre 4.0 versions of firefox if you wanted to open a link in a new tab, you had to hover the mouse over a link directly and specifically click it with the middle mousbutton. With 4.0 you can press the middle mousebutton anywhere on the website (even if there is no link), move the mouse around to scroll and then accidently release it over a link to have firefox open it in a new tab. This is very annoying i.e. if you want to scroll through a gallery with many pictures (that have links to bigger versions of themselves) and accidently releasing the middle mousebutton on a gallery image (with link) instead of some empty space. This way many new tabs that are not wanted get opened in the background. Additionally the functionality to just click the middle mousebutton to scroll and then click again to end scrolling is missing. You now have to keep the middle mousebutton pressed to scroll, which is a little annoying too if you want scroll through large websites/documents and have to keep the middle mousebutton pressed all the time.

Who makes your mouse? Is it a Logitech? If so, please see this post: http://forums.mozillazine.org/viewtopic.php?f=38&t=206293

Why won't Macbook Pro startup properly without external monitor & keyboard?

If I connect a external monitor and keyboard to my late 2011 Macbook Pro (running Lion) it starts up just fine.
But if I try to start it up without these (or any other devices) attached, I get no display on the internal screen and the internal keyboard is ignored (the caps lock light doesn't light up when the key is pressed).
However, I don't think it's a hardware issue, as a PRAM reset seems to work (I get the second chime) indicating that the keyboard is OK. And I get a second or so of grey screen before the screen goes black.
I've tried resetting my SMC and my PRAM. The latter seemed to fix the problem once - but then it came back, and won't go away again this time.
I've also tried starting in safe, single user, and verbose mode, but none of these seem to make any difference.
I've been having some issues installing Windows (under both BootCamp and Parallels) but wouldn't have thought that these were related.

I have solved my own issue, so wanted to post here in case anyone else encounters the same thing.
My Macbook was less than 90 days old, so I booked a telephone support call from Apple. But they couldn't help. So I booked a genius bar appointment. I turned up, powered up my Macbook, and it worked fine!
Since it was working OK, there was nothing for them to investigate (though they ran some basic diagnostics anyway). But as soon as I got home it stopped working again.
Now this was really weird, so I started eliminate anything that was different between the environments - power supply, cooling pad, laptop stand...
My Macbook normally sits on an aluminium cooling pad, which in turns sits on a steel laptop stand. And when sitting on both of these (or just the stand) it exhibited the behaviour above. However, when I put it on a wooden desk it worked fine! So I replaced the aluminium cooler with a gel pad and it still worked fine. But why...?
I also noticed another difference. Once I reconnected an external display and keyboard, I found that my internal display now stayed on - whereas previously it had gone off (with only the external display staying on).
Searching on the internet, I discovered that this was normal behaviour under Lion, and what I had experienced previously was abnormal behaviour when the lid is open - but normal behaviour when the lid is closed. And since Macbooks use magnets to determine whether or not the lid is open, those who preferred the closed lid behaviour were using fridge magnets to fool their Macbooks into behaving that way.
It seems that my stand and/or cooler was acting in the same way as a magnet, and making my Macbook think that the lid was closed. So the internal display stayed off whether or not I had an external display connected. Isolating it from the stand with a gel pad has resolved this issue.
So I guess that Macbooks weren't designed to be used on metal surfaces...

Just done a fresh install of Snow Leopard with all updates,iMac 5.1 behaves strange, sometimes I start Google Chrome and look at youtube videos the computer freezes and shuts down immediately, I believe its related to overheating ?

Just done a replacement of the pata DVD drive (its new and is working ok), and a fresh clean install of Snow Leopard with all updates, iMac 5.1 behaves strange, sometimes I start Google Chrome and look at youtube videos the computer freezes and shuts down immediately,
I believe its related to overheating ?
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Any ideas somebody ?
The hard disk has been previously checked with state of the art techniques that have confirmed that the hard disk drive is in perfect condition.

1.5-3 minute boot up as opposed to 15-20 seconds
And
why it takes a long time to load a lot of things.
I have restored this
from a time machine partition.
TimeMachine is only a backup and restore, it won't fix issues in software and according to your information, doesn't even optimize the restore for best performance on boot hard drives.
What you need to do to regain your speed is to understand how your machine works
Why is my computer slow?
Fix any and all issues in software following this list of fixes
..Step by Step to fix your Mac
Then follow this defrag method I've outlined
How to safely defrag a Mac's hard drive
Most commonly used backup methods
There shouldn't be need to reinstall OS X fresh unless your having file structure issues which if they are should appear when in the Steps, which then a zero erase and install will cure as well as any bad sector issues, the defrag step wouldn't be necessarry on a freshly installed system obviously as the files are written all together, not in portions all over the drive.
Hope this assists.

Has anyone ever encountered layer blend modes behaving strangely?

I use photoshop quite a bit for retouching and photo compositing. Tonight I encountered a strange problem. I was trying to create a vintage look on a photo and had a number of adjustment layers including a curves, levels, color fill and there were also a few texture/noise layers all set to varying opacities. Near the top of all this I had a vignette layer that was black around the edges and white in the center set to blend mode of multiply. Well, when I was clicking on and off I realize that that vignette layer was definitely lightening the center part of the overall image quite a bit (the part that is white on the vignette layer), almost like a screen. So I flipped the vignette layer through different opacity modes and saw that there was no change in its behavior, every mode was screening the white, even darker color and multiply. I thought maybe it was interacting in a weird way with one of the other layers so I turned all the others off except the back ground-- still no change. Then I dropped the layer down one at time until it was below the background. When I started to move it up again, it was behaving normally for a moment until I moved it up a couple levels in the stacking order and then it went back to the screen behavior. Anyway I shuffled it around a bit but there was no consitency to when it would display the correct opacity and when it wouldn't, so it did not seem to be an interaction with any specific layer. I don't know, but I can't really think of any case where white set to multiply should produce a lighter result even if it were interacting with another opacity. In any case it does seem to me that there is something going on with the overall computation of opacities. I tried creating a new black and white layer and it was also doing the same thing, behaving strange and not displaying the correct opacity.
I'm tired, so I'm going to bed. I'm going to shut off the computer and hope this goes away when I reboot, but if it does not, does this sound familiar to anyone? I'm not a regular visitor to this forum, but I thought I'd put it out there in case anyone else has experienced anything like this. I've only got 5 gigs of ram on this computer and I've been working away for a while... maybe photoshop just couldn't keep up(?) I'm using Photoshop CS5, RGB Adobe 1998 colorspace. I've never had anything like this happen in the last 11 years I've been using photoshop. Hmmm.... hope I don't have to reinstall or call support or worse. fingers crossed.

Nevermind. It is still having the problem. I have to think that this file is just corrupt somehow because I just opened another file and can't seem to cause the same problem. Basically, I can fill a layer with white, put it to a blend mode of multiply or darker color and it will block out everything of the image below, ie totally opaque. The opaqueness varies depending on the if there are other layers also on blend modes, but it does not seem to correspond to normal blend mode interaction. If I put it right on top of a regular layer with an image on it, it totally blocks it out on a blend mode of multiply... weird. I am going to scrap this file and see if the problem recurs in other files. My 2006 Mac Pro is getting some years on it and has been running pretty slow. I'm not a hardware expert but I've done everything I know how to do to maintain it. Was thinking of upping the ram to see if I can hold out a bit longer before I upgrade the computer. Wouldn't surprise me if this problem is related to the computer.

Why does my macbook pro get hot

Why does my Macbook pro get hot while I am only on my email account? This is a recent change. It gets too hot too put in my lap. Is it a battery issue.

Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.

Why Does Retina MacBook Pro (2012) Suddenly Hibernate With Lid Open?

I'd like to know why my Retina MacBook Pro (2012) at certain times suddenly go into Hibernate mode when I'm actively using it with the lid open and what I can do to prevent this.
I know this is hibernate because of what I see in the Console logs and the fact that I can't trigger a wake by using the keyboard/trackpad/mouse. Only the power button causes it to wake up.
This usually happens when I wake it from sleep and plug it into an external monitor via HDMI to HDMI connection.   The lid is open and I use both displays.    This happens about 30 seconds to a minute after I wake from sleep. At the time I'm not plugged into the power supply because I believe it's generally a good idea to let the batter drain and the recharge it. The last time this happened it was about 35% to 40% charged.
Hardware Overview:
Model Name:    MacBook Pro
Model Identifier:    MacBookPro10,1
Processor Name:    Intel Core i7
Processor Speed:    2.6 GHz
Number of Processors:    1
Total Number of Cores:    4
L2 Cache (per Core):    256 KB
L3 Cache:    6 MB
Memory:    8 GB
Software:
OS X Yosemite (all latest updates installed)
{some 3rd party software}
Let me know if you need more information.
For the gory details of what I see in system.log, read on:
This is about the time the hibernate happens. I've replaced my laptop's name with {COMPUTER NAME}
Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>: notification observer: com.apple.iChat   notification: __CFNotification 0x7f87d5210a90 {name = _NSDoNotDisturbEnabledNotification}
Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>:    NC Disabled: NO
Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>:   DND Enabled: YES
Mar 20 18:29:26 {COMPUTER NAME} identityservicesd[375]: <IMMacNotificationCenterManager: 0x7f87d510c9e0>: Updating enabled: NO   (Topics: (null))
Mar 20 18:29:26 {COMPUTER NAME} WindowServer[218]: device_generate_desktop_screenshot: authw 0x7fba81c2e940(2000), shield 0x7fba81c35bd0(2001)
Mar 20 18:29:27 --- last message repeated 1 time ---
Mar 20 18:29:27 {COMPUTER NAME} WindowServer[218]: device_generate_lock_screen_screenshot: authw 0x7fba81c2e940(2000)[0, 0, 1920, 1080] shield 0x7fba81c35bd0(2001), dev [1920,1080]
Mar 20 18:29:27 {COMPUTER NAME} com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.user.502): Service "com.apple.xpc.launchd.unmanaged.loginwindow.72" tried to hijack endpoint "com.apple.tsm.uiserver" from owner: com.apple.SystemUIServer.agent
Mar 20 18:29:30 --- last message repeated 1 time ---
Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: PM response took 4741 ms (30, powerd)
Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: ARPT: 1632.007298: AirPort_Brcm43xx::powerChange: System Sleep
Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: ARPT: 1632.007302: wl0: powerChange: *** BONJOUR/MDNS OFFLOADS ARE NOT RUNNING.
Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0x1b014fb000, 0x19000000]
Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0xd8ec7000, 0x19000000]
Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0x1369ac0000, 0xe000000]
Mar 20 18:29:30 {COMPUTER NAME} kernel[0]: [0x0, 0x0]
Mar 20 18:29:31 {COMPUTER NAME} kernel[0]: hibernate image path: /var/vm/sleepimage
And when I wake it up by repeatedly pressing the power button:
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: hibernate_newruntime_map time: 0 ms, IOHibernatePollerOpen(), ml_get_interrupts_enabled 0
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: IOHibernatePollerOpen(0) 19 ms
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: hibernate_machine_init reading
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: PMStats: Hibernate read took 355 ms
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: hibernate_machine_init pagesDone 212628 sum2 2c66736a, time: 355 ms, disk(0x20000) 447 Mb/s, comp bytes: 57749504 time: 55 ms 985 Mb/s, crypt bytes: 157388800 time: 67 ms 2228 Mb/s
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: Wake reason: EC.PowerButton (User)
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: vm_compressor_fastwake_warmup (7450 - 12878) - starting
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: Previous sleep cause: -60
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: Previous shutdown cause: 5
Mar 20 18:30:09 {COMPUTER NAME} kernel[0]: AppleThunderboltNHIType2::prePCIWake - power up complete - took 0 us

This happened again at about 31% power, again unplugged.   Previously, I had plugged in the power before pressing the power button, but this time I pressed the power button before plugging in. The display showed me the out of power icon. Only on plugging it back in was I able to power up the laptop again.
Is it possible there's a bug either with the displayed power or how remaining power is detected?

Metronome behaving strangely

When I press the record button in GB 3.0.4 The level meter displays a pulsing level, but I hear no sound for the metronome until I depress a key on my MIDI keyboard. This remains true whether I have it set to "Count In" or not. Another curious problem is that if I set the metronome to play during both Playback and Recording, I don't hear it during playback, until it reaches a region. For example, if I start playing from m. 1 but no instruments enter until m. 2, I don't hear the click start until after the instruments enter.
Anyone else having this problem? Any ideas what might be causing it?
Thanks,
Michael

Hangtime, thanks for your help, but the issue isn't the volume of the metronome. Normal GB functionality is that if you have Metronome selected to be "on," then when you click on the Record button you immediately hear the metronome, as well as see the click registering on the meter. I don't hear it, even though it is registering on the meter, until I depress a key on my MIDI keyboard. Then I hear it just fine. I've been working with this software since version 1 came out, and I've never had this problem before. I also have Sibelius, Logic, and Reason, so I am wondering if I may have unknowingly tweaked some setting that is making MIDI in GB behave strangely.

Why are my MacBooks so slow on the network when everything else is fast?

Last month, my apartment complex changed its network from a pretty wide open Wi-Fi to one where we must enter a user name and password every 30 days for each machine. Since then, both my MacBooks (2012 MBP running 10.8.3 and 2008 white MB running 10.7.5) have very slow connections. Web pages will fail to load, or load incredibly slowly (as in the progress bar moves an inch then stops). We get bursts of activity (as also seen in Activity Monitor) lasting for seconds (limited to 4mbps down/0.2mbps up by the new ISP). This occurs on both Safari and Firefox. iTunes music store, the Mac App store, Mail, and Spotify all exhibit identical behavior. My iPad, iPhone, and another's Windows netbook connect without any obvious difficulty. We had a rep from the new ISP come to check out our connection, and he believes that the problem is directly related to the MacBooks (a virus on both?).
Things I've tried without change in behavior (with the 2012 MBP):
1. Connecting directly to ethernet (and turning off AirPort).
2. Restarting the computer and the router.
3. Logging in elsewhere in the complex
4. Changing DNS to 8.8.8.8 and 8.8.4.4
5. Deleting AirPort and re-installing in System Prefs
6. Following the excellent "Step by Step to Fix Your Mac" https://discussions.apple.com/docs/DOC-3353 on these forums, including clearing every cache imaginable with Onyx, and uninstalling Java, Silverlight, Flash, and any System Pref plugins.
7. Sorting through Activity Monitor to find anything else running on my CPU of consquence--I don't think so.
8. Confirming good ping and down/up speeds on Speedtest.net with my iPhone
I know little about networking, but I'm learning. Any other suggestions? Why does the MacBook behave differently on this network?

bowsplash wrote:
Thank you for the suggestions. I agree that my ISP rep looked a little confused by my problem. He was comfortable using Terminal (at least for basic network queries--more than I know how to do).
Although I physically have the ISP's router in my apartment, the ISP has changed the password, and I'm unable to change channels (though that shouldn't explain the peristent problem on ethernet). I've tried restarting it many times, including unplugging it.
I just emptied my trash (and restarted the computer). 500gb HD, 24gb free. No change in performance.
You're running out of HD space. That's the problem.
Empty the trash in the Dock as well as iPhoto’s trash!
Open up your application folder & go through all your apps. Trash all the apps you no longer want and/or use.
An easier way to do this is to open the Application folder in list view & press the Command+j keys.
In the the dialog that appears, click the "This Window Only" button & the "Calculate All Sizes" check box.
Wait a bit until your file & folder sizes have all been calculated, then click the "Size" column to sort your apps from the fattest to the most anorexic.
Get rid of all your photo files you don't want and/or need. Same goes for those pics off the websites you downloaded (gifs, jpegs, etc.). Or transfer/move them all to a photo/movie storage site like ImageShack and Photobucket, 2 of the most popular FREE storage sites.
Get rid of all your video & music files you no longer view and/or listen too. Especially, if you already have the actual CD/DVDs or you can later redownload from a website. Or transfer them all to a FREE video/movies and/or music storage site.
Use Spotlight to make sure you got rid of everything. You can even trash directly from Spotlight! Better yet, download this FREE software called Find File. This app puts Spotlight to shame (works w/Mountain Lion).
Drag what you don't want and/or need to the trash. Better yet, download this neat little shareware app *demo* called AppZapper. It basically does all the work for you by not only trashing the apps but the apps preference files, caches & all its associated files.
Another software that does the above is AppDelete. Best of all this software is free!
Burn what you want and/or need onto CDs or DVDs. Not everyone has the luxury of purchasing an external HD and/or the system requirements for iCloud to store their "stuff.”
Dropbox is a free storage utility to check out.
You can check with your ISP to see if they offer *free* storage space. Most if not all do now-a-days. There are thousands if not millions of *free* storage facilities on the web also. Use your favorite search engine to search them out as they come in different storage sizes to fit your needs & wants.
Check for duplicate fonts.
Applications>Font Book
Select “All Fonts”
If you see any “black dots” next to any fonts this mean you have duplicates and/or multiple versions of these fonts.
To clean this up, select a “black dotted” font or the Apple + *click* to select multiple dotted fonts;
Edit>Resolve>Duplicates.
What the above does is turns off the duplicates & multiple version fonts. Not delete them.
More than likely the “extras” were installed by other programs and/or other users.
Clear out font caches
Use FontNuke. It does all the work for you. And, best of all it’s *FREE*.
Printer Drivers
Get rid of all the printer drivers you don’t need & use except the ones for your *current* printer(s)/scanner(s).
HD>Library>Printers Folder
If you accidently threw something out that you needed for your printer/scanner it can be easily obtained from the manufacturer’s website and/or from the CD that came w/the printer/scanner.
Garage Band
Has about 1GB of loops stored. Get rid of some some them. You surely don’t use, like and/or need them all.
HD>Library>Audio/Apple Loops>Apple>Apple Loops For GarageBand
Or just get rid of the Garage Band app altogether if you don’t use it.
Get rid of extra languages
Strip your computer down to your “native” tongue.
You can do this with a *FREE* utility called Monolingual. Another app that apparently does all the work for you. I’ve never used it. However, a lot of users here swear by & recommend it highly.
However, there is a warning for *native English speakers*. Make sure you keep BOTH English and English (United States).
Other Resources:
HD Space Checkers:
Disk Inventory X (FREE)
WhatSize (SHAREWARE)
OmniDiskSweeper (FREE)
GrandPerspective (FREE - donation)
==================
Mac Performance Guide
Slimming your hard drive
Rule of thumb: You should never let your hard drive get to where you have only 10-15% of space left.
Quick fix
How To Quickly Free Up Hard Drive Space on Mac OS
http://www.youtube.com/watch?v=fO-mlLApEuk

MacBook display brightness will not adjust

My MacBook display brightness is very low level, the F1 and F2 brightness keys bring up the transparent window and show brightness turned all the way down, but F2 does not increase the brightness. In Preferences, the display section shows the Brightness slider all the way to the top, and if I attempt to slide that down it snaps back to the top, and the actual screen brightness does not change from very low. I also have verified that the function keys are NOT set to lock out the brightness function, so pressing command and F1/F2 does nothing. So nothing from previous forums seems to apply! All other function keys operate properly (multi-window, volume, dashboard).

OK guys, think I found a solution to this one.
My girlfriend's mac had the same problem as yours, and I was motivated to fix it becuase I needed to use my mac for my dissertation and she kept stealing it!
anyway, turn the brightness all the way down, press it up once and you will see the screen flash. do it again, really fast up and down up and down and the scree will stay on as long as you keep playing with the buttons.
next, use this temporary fix to get into system preferences -> displays... and change the resolution to something considerably lower. then it stays on permanently. Not too sure about why this happens, maybe the mac can no longer handle that many colours or complexities?
sod it. enjoy.

Why is my MacBook display behaving strangely?

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