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13
votes
3answers
13k views

What is a Kernel Panic and what does it mean?

I have this report: Anonymous UUID: Removed Tue Aug 11 20:26:13 2015 *** Panic Report *** panic(cpu 2 caller 0xffffff8028bc1cde): "launchd died\nState at Last Exception:\n\n"@/SourceCache/xnu/...
55
votes
5answers
233k views

MacBook Pro: How to disable discrete GPU permanently from EFI?

I'd like to disable the NVidia GTX 750M GPU on my MacBook Pro 15" (Retina, Mid 2014, Mac OS X 10.10 Yosemite). I know I can use GfxCardStatus but I read I could have a more permanent solution by ...
72
votes
7answers
88k views

Is there any way to set a MacBook Pro to not sleep when you close the lid?

The most common use case I have for this is when I'm playing music over AirTunes, but don't want an open laptop laying around. Or when I'm syncing or downloading something. This isn't the same as ...
23
votes
3answers
35k views

How do you get system diagnostic files from macOS?

I am trying to debug a crashed (or hanging) app. How do I get the diagnostic files from the crash?
7
votes
2answers
46k views

No sound (speakers/jack) + microphone's dead after spilling water

Sadly, yesterday I've spilled some water on my MacBook Pro (El Capitan). Before you yell at me - it was closed, turned off and it wasn't a lot of water, the laptop was wet only on the top and under - ...
83
votes
5answers
98k views

Why is my host name wrong at the Terminal prompt when connected to a public WiFi network? [duplicate]

For three days straight, I have connected to the public WiFi network at my local library. Each day, I have seen a different prompt in Terminal. Here are some of the prompts I've seen: zp-pc:~ russell$...
9
votes
2answers
29k views

Installing Ubuntu on Mac with macOS and Windows already installed

I have a dual-boot MacBook Pro late 2013 with macOS Sierra and Windows 10 (BOOTCAMP) already installed. I want to install Ubuntu as a third OS. Is there any (easy) way to do it? > Disk Partitions:...
22
votes
2answers
6k views

Data Not Backed Up, Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I was trying to install Linux on my MacBook for class when I bricked my computer, which now in an unbootable state. I made my partition too small, so I was going to delete and create a larger one. ...
12
votes
5answers
136k views

How can I disable Safe Boot or the Shift Key?

After a spill on the keyboard of my unibody MBP 17", the ⇧ key reports as always on. Under Windows (BootCamp) and Linux (LiveDVD) I can easily get around the problem by using an external ...
13
votes
6answers
54k views

Is it possible to delete the “useless” apps pre-installed on my Mac?

There are some preinstalled apps that came with my laptop that I know I wil never ever use. Apps like "Notes", "Stickies", "Game Center", etc.. that were preinstalled in my Macbook Pro are apps that ...
44
votes
9answers
78k views

How can I create or recreate a Lion recovery partition?

For whatever reason, one of our macs didn't make a recovery partition when it upgraded to Lion. Is it possible to add a recovery partition after the fact? To be clear - on a normal mac, the ...
50
votes
5answers
13k views

How do I remove duplicate “Open With” context menu items in Finder.app?

For whatever reason, the "Open With" context menu in Finder is always listing every app four times (exactly). I've read about (and tried) rebuilding the Launch Services database to restore the ...
20
votes
6answers
2k views

How do I change the location of macOS screen captures?

As a developer, I take a lot of screen captures. I often take screen shots to share with Stack Exchange members in chat. The problem is my Desktop is so cluttered with screen captures that they're ...
14
votes
3answers
7k views

kernel_task hundreds of % CPU yet cpu frequency is being lowered

I'm trying to solve the mystery of a crazy high cpu usage on kernel_task. MacBook Pro (Retina, Mid 2012), 2.7 GHz Intel Core i7, Yosemite 10.10.2 I saw some advice to download the Intel Power Gadget....
12
votes
5answers
7k views

How to keep an SSD in shape on Yosemite?

As of OS X 10.10, Apple uses kext signing. Ever since it has become difficult and dangerous to manually activate TRIM for third-party SSDs on OS X. That means users with non-Apple SSDs will sooner or ...
4
votes
1answer
2k views

My storage was not updated

I just changed my storage plan for 50 GB for $0.99 per month. When i went on settings>General>Storage and icloud usage, where it said storage above it i didnt have more storage. But the second box, ...
584
votes
155answers
331k views

Please share your hidden macOS features or tips and tricks

Do you know any hidden or little-known nice feature of macOS (née Mac OS X)? It doesn't matter what it is—maybe just a short terminal command or a keyboard shortcut. Share your experiences on ...
391
votes
10answers
291k views

How to find cause of high kernel_task cpu usage?

Occasionally my machine will have a kernel_task instance max out the CPU: This can last from minutes to sometimes hours. The machine is effectively unusable in this state. Restarting doesn't help; a ...
332
votes
12answers
188k views

How can I trigger a Notification Center notification from an AppleScript or shell script?

I'd love to be able to take advantage of 10.8's Notification Center features in AppleScripts and shell scripts I write. Is there a built-in command or a third-party library I can use from either an ...
177
votes
12answers
231k views

Why are dot underscore ._ files created, and how can I avoid them?

I am using different operating systems on different machines on different locations. I am using a USB flash disk to keep my files (source codes etc.). I am new to Mac OS X and now I realize there are ...
131
votes
16answers
182k views

How can I open a Terminal window directly from my current Finder location?

I was wondering if there was any was I could right click inside any instance of a "Finder" window such that I have an option that says "Open Terminal Here". It would be really helpful.
96
votes
17answers
235k views

Why is the accountsd process eating so much CPU?

Why are the accountsd and securityd processes using so much CPU on OS X 10.10.3? I am on a Early 2011 Macbook Pro. What are these processes for? Is it safe to kill them? The machine has only been up ...
120
votes
5answers
86k views

Spam iCloud Calendar Invitations

Today I've suddenly received spam calendar invitation for $19.99 Ray Ban sunglasses (never subscribed, checked, searched or visited any related site, so clearly spam) and it has other visible email ...
16
votes
1answer
7k views

Block Specific Apps on macOS

Is there a way to block a list of specific apps on macOS? I have looked up solutions such as Cisdem, but there are some holes in the way it works that I don't like. Unless you also block Activity ...
16
votes
6answers
96k views

Terminal returns not found for most commands Mac OSX

I'm really new to Mac OSX and UNIX based systems. I wanted to run a few Windows games on my Mac Mini so I started installing Wine and MacPorts. Having done so, I typed in sudo port install wine and ...
3
votes
1answer
5k views

Nice Audio Mixer/Repeater

I am looking for a nice volume mixer for OS-X Yosemite+ for per-application audio control, I would also like per application sound output control. I don't mind buying if it's a nice product with long ...
268
votes
1answer
84k views

How to prevent Mac from changing the order of Desktops/Spaces

You may have encountered a situation in which Mac changes the order of desktops based on some events like alerts on a program or a web page in browser. How could I disable this logical change? Note: I'...
71
votes
4answers
84k views

Do MacBooks have a true “Hibernate” option?

I've recently switched from Windows to a MacBook pro. In Windows, there are the following shutdown options: Standby - the machine goes into a "light sleep" from which it can awaken very quickly (like,...
29
votes
3answers
333k views

How could i use an iMac as secondary monitor for a Windows 7 laptop

Recently (less than one year ago) i bought an iMac 21,5". Now i would like to use it as secondary monitor for my laptop. (My laptop runs Windows 7). Is it possible? (I found conflicting opinions on ...
16
votes
8answers
505k views

How do I create a Mac bootable USB drive using Windows?

My MBA 2012 with OS X 10.9.4 Mavericks won't boot anymore - it simply freezes after the initial jingle. I already tried resetting NVRAM and SMC, but to no avail. I don't have any time machine backups. ...
29
votes
7answers
412k views

“Your system has run out of application memory.” How is that possible?

macOS is regularly popping up a "Force Quit Applications" dialog: Your system has run out of application memory. To avoid problems with your computer, quit any applications you are not using. ...
10
votes
3answers
65k views

How secure is Activation Lock on iOS 7 (and later)?

Apple showed this new feature in iOS 7 called Activation Lock, that if you enable "Find My iPhone" on a device that is lost or stolen, a person that finds/gets the iPhone will not be able to wipe it ...
6
votes
4answers
16k views

Messages won't let me sign in to iMessage

On my OSX laptop (10.8.5) I've recently been unable to sign into iMessage. By recently I mean approximately a week. I've not done any updates that I recall lately. Coworkers are able to send me ...
215
votes
6answers
97k views

Applications Don't Show Up in Spotlight

Spotlight has stopped showing any results for my Applications. I've tried reindexing and removing the index so it rebuilds it. No change. I've tried adding Applications to the Privacy tab and removing ...
109
votes
23answers
247k views

DNS not resolving on Mac OS X

Some of my coworkers are having troubles on their Macs - DNS resolution does not work under Mac OS X. They're running Snow Leopard 10.6.8. They can use DNS in a Windows 7 virtual machine (VMware ...
131
votes
10answers
191k views

Mail App keeps popping up in the background in Mac OS Mojave

When I am doing some work on my macbook pro, Mail app's main window keeps popping up in the background, it even pops up when I watch movies by interrupting full screen. This is so frustrating, I can't ...
45
votes
9answers
360k views

How to download Bootcamp drivers without Bootcamp assistant?

I'm setting up my MacBook Air for a Windows-only boot setup. This was easy enough. It already had rEFIt on it, I just connected a Windows 7 boot thumb drive, and away I went. However, it seems Apple ...
34
votes
7answers
43k views

Create global shortcut to run command line applications

What steps do I need to run a command line program via a global shortcut? I setup Automator to create a new Run Shell Script and tried to assign a shortcut in System Preferences -> Keyboard -> ...
28
votes
8answers
50k views

Connecting multiple screens to the 2016 MacBook Pro with Touch Bar

I'm thinking about buying the new MacBook Pro with 4 USB-C ports. I want to attach two screens, mouse and keyboard and ethernet to the MacBook Pro while using the fewest number of USB-C ports ...
51
votes
8answers
186k views

MacBook Pro (mid-2012) Microphone Input

Here, it says how to use the audio jack as in input. On my MacBook Pro 13" (mid 2012), It doesn't seem to have the option in settings. Is it not possible with these computers?
36
votes
8answers
11k views

How do I uninstall a program completely on a Mac?

I come from a PC background... every time I want to uninstall an application, I must use add/remove programs. On the mac, you can simply run a .app file from wherever you want, and many say that the ...
17
votes
6answers
13k views

How to show hidden files on mac without Terminal

I need an easy way to switch files visibility on Mac. I know about Terminal commands how to show hidden files and hide files. However, I need a tool to make this task faster and easier. I was trying ...
16
votes
1answer
484 views

How should I submit bug reports and feature requests?

Inspired by Marco Ceppi's DS_store question I became curious about what is the current preferred mechanism for submitting bug reports and feature requests to Apple. I'm aware that they have the ...
9
votes
4answers
7k views

Using Apple Script to Manage Sound Output Selection

I am brand new here and I have an additional clarification or need additional help for an issue from this thread - Applescript: "can't get tab group 1 of window" (El Capitan) In my ...
8
votes
1answer
6k views

macOS partition startup Volume type FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I have encountered a nearly identical issue to the one in this question (and this too: Data Not Backed Up, Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF), but my hard drive's main partition is ...
7
votes
2answers
16k views

How to accept USB as audio input for New Macbook Pro Retina?

I would be very grateful if you could help me clarify - I used to use a software program for recording vinyl mixes on my old Macbook called - Audacity. Recently I've replaced this old Mac with a new ...
370
votes
7answers
267k views

How do I recompile Bash to avoid Shellshock (the remote exploit CVE-2014-6271 and CVE-2014-7169)?

Given that Bash 3.2 (the version shipped by OS X) is vulnerable to the remote execution exploit known as "Shell Shock" (CVE-2014-6271 and CVE-2014-7169) how do I rebuild Bash and secure my system ...
139
votes
2answers
201k views

How to investigate high kernel task memory usage?

I was using my MacBook Pro (with 16GB of RAM) as usual and out of blue I've this popup that: Your system has run out of application memory. To avoid problems with your computer, quit any applications ...
279
votes
7answers
130k views

“File Open” dialog is missing sidebar items

I'm having the strangest issue since updating to OS X El Capitan. My "Open File" dialogs show the sidebar but all my main (and useful) locations are missing. Take a look at this screenshot. This ...
152
votes
8answers
126k views

How to simulate slow internet connections on the mac

What's a good software solution to slow down internet connections on the mac for testing and simulations? My primary need is when testing code in the iPhone / iOS simulator, so slowing down the ...

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