Questions centered on analyzing a technical problem or errant behavior with Apple hardware or software.

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31
votes
2answers
53k views

El Captain update download doesn't continue after restarting the Mac

I started to download the El Capitan upgrade, but then I shut down my computer. The day after I wanted to continue the download but in App Store it shows "Waiting..." and doesn't do anything. Also ...
31
votes
9answers
23k views

How can I stop my whole screen from flashing white on errors?

Whenever I access Terminal and press Command ⌘ + Delete ⌫ my screen flashes white. It also happens when Chrome's Command ⌘ + F returns no results. Have I somehow messed up my settings? I already ...
18
votes
8answers
14k views

Mavericks Finder spins when opening folders

Since upgrading to Mavericks, Finder sometimes hangs when I select a folder and am waiting for its contents to populate the window. This happens primarily in Open dialog boxes: It'll spin for about ...
14
votes
1answer
2k views

Set launchd log level

How can I set the log level of launchd in MacOS Yosemite? I've tried launchctl log level debug but it doesn't work.
13
votes
3answers
3k views

Why is the Network Link Conditioner preference pane crashing as soon as I turn it on?

I am trying to use the Network Link Conditioner preference pane included with the Hardware IO tools in the developer tools to throttle Internet speeds. I can open and load the preference pane, but as ...
12
votes
5answers
8k views

Yellow tooltip stuck on screen

There is a yellow tooltip stuck and it floats above all other windows. I do not know from what program it came. How can I get rid of it without restarting my computer? EDIT:
8
votes
5answers
74k views

Can't boot Mac, only shows a Folder with a Question Mark?

How do I start up a Mac when all it shows is a Folder with a Question Mark, even with a DVD in the drive? Image courtesy of Loïc Wolff
8
votes
3answers
2k views

Is there a way to detect what program is stealing focus on my Mac?

I've got a problem with some app on my Mac stealing the keyboard focus (the current window's title bar becomes inactive). However, it is not actually putting up any windows or menu bar of its own, and ...
7
votes
6answers
117k views

Need to print out iPhone text messages

I have a court case and have text messages on my iPhone I need to transfer to my iPad email for evidence. Every time I try it doesn't work, it will send them to my iMessage but not my email. I need ...
7
votes
4answers
3k views

How to deal with unzip error on a large file in OSX?

I downloaded the latest Raspbian image from the raspberrypi.org website on my Mac running OS X 10.10.5 The SHA-1 checksum agrees with that listed on the website. When I try to extract using unzip I ...
7
votes
3answers
22k views

Why is my Mac constantly trying to connect to another server?

After logging on, I see this dialog box pop up. Whenever I dismiss it, it reappears 30 seconds later. (Stealing focus at the same time! Grrrr!) "Slate" is my old iMac, which is sitting on the desk ...
7
votes
3answers
52k views

Why won't my Time Capsule extend my wireless network?

I'm trying to get my 2009-era Time Capsule to extend my home wireless network (broadcast by a non-Apple router). I reset the Time Capsule and AirPort Utility can see it on both my iPad mini (iOS ...
7
votes
6answers
7k views

So my Yosemite install is slow - what to do?

I installed Yosemite today on a 2010 MBP, 8GB RAM, 2.4Ghz Intel Core 2 Duo. Its awful, its so slow, everything seems to hang, even simple things like Finder. Chrome is going as a snails pace and Mail ...
6
votes
4answers
671 views

Flash plugin crashes frequently

In various websites, at random times and with no apparent pattern, the Flash plugin will crash. This has occurred in every browser, and I typically have at least one crash a day. According to ...
6
votes
8answers
23k views

Master volume control is grayed out

on my Mac 10.6 (MacBook Pro Late 2009) master volume control for both Line-In built and for external USB Microphone is disabled (grayed out) Nobody really wanted to help what is the reason and how ...
6
votes
2answers
3k views

Glitches in OS X - memory or ssd?

My laptop is Macbook pro 15', Early 2011, with an SSD drive - OCZ Agility 3 240GB. I changed my memory too to 16GB (Corsair from Amazon). I experience glitches: Also Skype refuses to launch. I ...
6
votes
2answers
21k views

How do I find the log for the shutdown process?

I've done some Googling and nowhere do I find where you can log the shutdown process. The best I've found is a log where it states when the shutdown process begins but that's all. My computer is ...
6
votes
2answers
7k views

Blued and syslogd Eating CPU and Flooding system.log

My machine occasionally goes into a state where almost 100% cpu is eaten by syslogd and blued. At that time, numerous copies of the following block appear in the console: 4/29/14 10:31:45.000 AM ...
6
votes
3answers
3k views

iMac display has discolored tan lines

I have a 24 inch, mid-2007 iMac purchased used. I don't know the original owner and it's out of warranty. On the display is a series of tan or yellowish horizontal lines - all an approximate inch ...
6
votes
2answers
4k views

Why might a Macbook Pro go back into sleep shortly after waking up?

Whenever I wake up my mac by opening the lid, approximately 20 seconds later it will put itself to sleep again, even though I'm actively working on it. I'm guessing it's "deep sleep" (hibernation) ...
5
votes
2answers
13k views

What can be done to make my Mountain Lion Mac drops connection to my Cisco router less often?

I have a Cisco wireless router WAG54G2 Annex A plus Cisco Extender RE1000. The router is upstairs and extender helps me strengthen the signal downstairs and have been having issues keeping a wireless ...
5
votes
4answers
3k views

Automatically quit Terminal when typing exit

Scenario I use terminal to SSH a lot, however would like the Terminal App to quit when the last Tab closes using exit. I already have the terminal window itself set to close on successful exit, ...
5
votes
4answers
33k views

What can be done to fix a 2011 iMac that will not boot past the white screen?

I have now tried opening the iMac and removing the cables to the SSD, it still gets stuck on the white screen. I tried again, removing the cables to the HDD as well and the same thing occurs. No idea ...
5
votes
2answers
4k views

Airport Express requires frequent rebooting

I use an Airport Express to create a wireless network at home. Frequently (~2 times a week), all the computers using the network (eMac, Intel iMac, MacBook Air) can see the network as an option in the ...
4
votes
1answer
114k views

iPad won't turn on after a complete battery drain

my iPad iPad mini retina is out of warranty I forgot to plug in my iPad after the critical battery warning and it went some minutes following the warning. I was not worried because same thing had ...
4
votes
3answers
9k views

Why is Java consuming 100% CPU on my machine?

I have an iMac (early 2010) running 10.7.2 but the problem has been seen on 10.6.x also. The symptom is simple, one of my 2 cores is sitting at 100% utilization with the Java process responsible for ...
4
votes
3answers
4k views

High CPU usage by a process called PTPCamera

On my Macbook Pro (Retina, Mid 2012) is a process, called PTPCamera, using a lot of CPU-Time . I already have killed this process but it spawned immediately again. 85% of CPU usage eats my Battery ...
4
votes
2answers
6k views

Why is my Advanced Add Printer mode disabled?

I am using a Unibody MacBook Pro on Lion. I am trying to add a networked printer at work so I can print to it, but OS X is not cooperating with me. Typically for adding networked printers on a ...
4
votes
2answers
4k views

How can I fix permission issue when I cannot start Mac OS X?

I was creating a guest account and to prevent it from accessing the Macintosh HD as in other applications and stuff I assigned it as in "No Access" When I switched to the guest account everything ...
4
votes
3answers
69 views

MacBook Pro Trackpad Suddenly Stopped Working Completely

The trackpad on my Macbook Pro of 2 years has suddenly stopped working out of blue. The trackpad doesn't move, respond to any gestures nor do any clicks work. This is really frustrating as I used ...
4
votes
2answers
4k views

How to troubleshoot 802.11ac bandwidth problems

I have a new Macbook Air with 802.11ac, and a new Airport Extreme with 802.11ac. I'm trying to transfer a large file across my LAN (I have a network drive attached to network via wired ethernet). If ...
4
votes
3answers
6k views

Where did these missing OS X application icons go?

On my Mac mini, app icons have gone missing for some apps (Terminal, Chrome, Spotify, Skype) from the Dock and elsewhere. See a screenshot of the Dock. When I hover over the empty spots, I can see ...
4
votes
3answers
7k views

Can't relaunch Finder and the menubar is missing

I booted up my MacBook Air (running Mac OS X Lion) and the desktop doesn't have a menubar. I used option+right-click to relaunch Finder and there isn't an option to relaunch it. When I launch an ...
4
votes
3answers
1k views

loginwindow process out of control

I have an early 2010 27" iMac that is the family computer. It has 5 user accounts on it. (Not sure if this is relevant or not). Often times I'll come home and the login screen won't appear. Usually ...
4
votes
2answers
904 views

Mac Pro cd drive stuck open

I just got a brand new mac pro. I opened the cd drive with the eject button on the keyboard, and then went to close it the same way, the cd drive goes in, but the metal gate doesn't come back up. What ...
3
votes
2answers
622 views

Mac spontaneously restarts

I'm running Snow Leopard 10.6.8. I leave my machine for an hour. When I return the machine is asleep and all the applications have been shut down. It is almost as if it has spontaneously restarted. ...
3
votes
2answers
9k views

How to find a cause of a Kernel Panic message, or BSoD?

How to understand why Beautiful Screen of Death1 appeared? When I tried to find what happened using "Console" I couldn't find anything useful in logs? There's no 'panic' or 'SIG*' in logs, so what ...
3
votes
2answers
11k views

MacBook Pro won't power on after SMC reset

Some water was spilled on the table and came in contact with my wife's Mid 2009 MacBook Pro near the MagSafe adapter causing the MBP to shut itself off. Based on some recommendations from the ...
3
votes
6answers
52k views

How can I troubleshoot no audio via Thunderbolt HDMI connecting to HDTV?

I have a 13" late '11 MBP OS X Lion 10.7.5 I am trying to hook up to my LG HDTV with a Thunderbolt HDMI cable. Getting the display onto the TV is a snap. The audio, however, is not working. The ...
3
votes
2answers
7k views

The system preference panes will not load

When I open System Preferences and click on an item it says 'Loading Users & Groups' at the top of the window, but will not load the pane. I've tried deleting the property list file: ...
3
votes
2answers
11k views

How can I diagnose a superdrive that won't read disks?

My MacBook (Snow Leopard) seems to be unable to read DVDs and CDs. I've searched around the nets, and it looks like I may be experiencing a relatively common problem, but I don't want to jump to ...
3
votes
2answers
4k views

How to fix Magic GarageBand missing files?

I hadn't used the Magic GarageBand feature before today (I generally don't use GarageBand that often) and when I went to try it, everything seemed to work until I clicked Open in GarageBand in the ...
3
votes
2answers
670 views

Help diagnose errors on MacBook that will not boot

I have a MacBook which won't boot beyond the grey screen / Apple logo. With some key combo (can't remember what I did!) I managed to get a black screen with text output - see image. Can anyone offer ...
3
votes
5answers
6k views

AirPort Extreme Drops Out Periodically (Every 2-3 Days) Requiring Unplug/Replug to Restart

I have an AirPort Extreme that drops connection every two to three days. When my client indicates no signal/SSID present, it searches and does show my AirPort Extreme SSID. However, selecting it ...
3
votes
1answer
962 views

Applications frequently become permanently unresponsive

I frequently have applications become unresponsive while they're in the background. That is, I'm not able to switch back to them*, and the Force Quit Applications window shows them as "Not ...
3
votes
2answers
3k views

Mountain Lion is stuck with “See network administrator” when joining Wi-Fi network

I recently clean installed Mountain Lion to my mid 2011 iMac, and ran into a frustrating issue when joining my Wi-Fi network. All my other Apple devices have no trouble accessing the same wifi, except ...
3
votes
1answer
5k views

How can I get my MacBook Pro's sound back?

Sound isn't playing on startup or any other time. I'm not seeing the red glow from the headphone jack that I've seen mentioned in certain cases of this failure. Though I have noticed an awful lot ...
3
votes
1answer
2k views

Macbook Pro Retina “Battery Is Not Charging”

My retina macbook pro is currently on 4% but when I plug it in the battery icon up the top shows the plug icon instead of the lightning bolt icon inside it to say it's charging and stays on the same ...
3
votes
1answer
550 views

MacBook Pro Charging Issues

Last night I plugged in my MacBook Pro, and I noticed the light on the charger was a very faint green, hardly visible in bright light. Today I opened my Mac and noticed it stated 'batteries not ...
2
votes
2answers
22k views

I accidentally deleted my “contacts” app on my iPhone. How do I get it back?

I accidentally deleted my "contacts" App on my iPhone. How can I get the app back?