Questions tagged [hang]

The problem when your computer/device as a whole OR an individual application becomes unresponsive, "hanging" as it were, in mid air.

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136
votes
2answers
195k 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 ...
32
votes
14answers
38k views

Cursor freezes for a split second around every 10 seconds

My cursor on my Mac (running the latest version of El Capitan) has been freezing for a split second around every 10 seconds – it then reappears in the place it should've been if it hadn't disappeared. ...
28
votes
1answer
26k views

What does it mean when a %CPU exceeds (# of cores) x 100%?

Several responses to a question I asked earlier suggested I try Opera kiosk mode, so I decided to download it and give it a try. Once the download had completed and the disk image was being verified, ...
21
votes
3answers
4k views

Keychain issues after Sierra

I've updated to MacOS Sierra a few days ago, and it has been really unstable (a lot of freezes and hangs, specially in XCode). I noticed that in Console, the following two lines appear repeatedly, ...
19
votes
11answers
18k views

Why is Preview excessively slow after upgrading to Lion?

After upgrading to OS X Lion, I noticed that my preview app is now excessively slow, taking minutes to open a file instead of seconds, even when opening a local file. In addition, it is often ...
19
votes
6answers
70k views

How to fix mac os high sierra, freeze?

My Mac laptop is freezing like age old windows laptop since I have upgrade my mac os to mac os high sierra. Mac details : Mac book pro retina mid 2012 It just freezes and i am forced to restart my ...
19
votes
5answers
80k views

Boot hangs on grey screen (even when booting from USB drive with fresh OS X install)

My MacBook Pro 15" Late 2011 (MacBookPro8,2) with AMD Radeon 6770M exhibited display corruption and associated system crashes/resets over a period of two weeks before it entirely failed to boot. The ...
18
votes
2answers
32k views

How does 'stuck' (in results of 'top') relate to 'not responding' (in Activity Monitor), 'spin' or 'hang'?

In results of top commands, I sometimes see stuck. Apple's top(1) OS X Manual Page does not explain this use of the word. How, if it all, does stuck relate to the following? not responding – may ...
18
votes
6answers
37k views

Macbook Pro freezes after sleep

The above mentioned Macbook Pro Retina (Mid 2015) with SSD, running Sierra seems to be freezing most of the times, after attempting to "wake" it up from sleep. The situation has the following observed ...
15
votes
2answers
7k views

How to stress a MacBook Pro Retina?

I need to stress my rMBP components (e.g. CPU/GPU/RAM) without loading any additional software tools. Background - My rMBP has a hardware fault (similar to this issue) which causes system freezes ...
14
votes
5answers
21k views

IMac freezing intermittently--every few minutes. How can I fix this?

A couple of days ago, I was browsing, and downloading something from Usenet, when my iMac all of a sudden froze up, grinding to an unbearable slowness. After trying to tolerate what was happening for ...
13
votes
4answers
9k views

Why is sudo taking way too long?

I recently updated to macOS Sierra 10.12.4 Beta (16E144f) and it might be what is causing sudo to delay up to 10 minutes as it's the most recent change I recall since this problem occurred. I have ...
11
votes
7answers
25k views

XCode Hangs at Startup

XCode fails to open on my machine - OS X 10.8.2. It opens the main screen and just hangs there with the spinner spinning becoming unresponsive. If I double clcik a project, it just hangs sating it is ...
11
votes
4answers
44k views

Finder slow/freeze under Mavericks

<rant>I wish I never upgraded to OS X 10.9, it is so buggy!! But the alternative to stick with the unpatched earlier version of OS X was not a solution! Anyway, so I am on this crappy Mavericks ...
11
votes
2answers
16k views

MacBook Pro with Mountain Lion freezes frequently (full screen Flash in Chrome, Messages, HTC on USB)

Problems following an upgrade to Mountain Lion on a 13-inch, Early 2011 MacBook Pro (MacBookPro8,1 with Intel HD Graphics 3000). With Google Chrome, I was watching YouTube video fullscreen – Flash ...
11
votes
2answers
2k views

vm_compressor=VM_PAGER_DEFAULT in Yosemite caused freeze when physical memory was full

The memory compression caused frequently lag so I tried turning it off by using the command sudo nvram boot-args="vm_compressor=1" The lag was gone but I got crashing freeze when I opened ...
11
votes
3answers
41k views

How to stop MacBook Pro (Retina) from freezing/locking at the login/authentication dialogue, after wake?

Steps to reproduce: Be doing anything Close the lid of the computer Wait around for a while Open the lid of the computer Login prompt for last logged in user appears, battery and time MAY update, but ...
11
votes
4answers
49k views

iMac freezes complete, except mouse pointer. What can I do?

Recently, I've noticed a strange behavior on my iMac (Yosemite 10.10.4, Late 2009). Everything freezes completely - it's totally unresponsive. HOWEVER, I can continue to control the mouse pointer ...
11
votes
1answer
2k views

OS X 10.11.1 with Safari 9.0.1 freezes on opening new tab or address bar selection

I've got MBPro Mid 2014 with the latest OS X update - 10.11.1. I have noticed that sometimes Safari freezes for 3-5 seconds when I open new tab or click on address bar. I am sure that I didn't have ...
10
votes
3answers
39k views

Mail.app extremely slow on OS X 10.9 Mavericks

Since I updated to Mavericks two days ago on my late 2008 13-inch MacBook (first unibody aluminium), I have huge difficulties using Mail. When Mail is running, everything slows down extremely (I ...
9
votes
3answers
35k views

How can I dismiss a frozen “Deleting Trash” dialog box?

I have the trash dialog box up, and it's frozen. What process needs to be killed in order to remove it, without having to restart?
9
votes
1answer
7k views

TouchBar keeps freezing

The TouchBar in my new MacBookPro 2017 keeps freezing every time I use it to adjust the brightness of the screen. In order to circumvent this, I need to use the "Force Quit" command, but is becoming ...
9
votes
1answer
9k views

Where are crash logs after a system freeze?

When your entire macOS freezes up and restarts, are there crash logs or core dumps to diagnose the problem? I would in particular like to know which kernel module was active at the time of the crash. ...
9
votes
5answers
7k views

Starting Preview without opening previous PostScript documents

I'm running the latest version of OS X and Preview is hanging whenever I try to start it. It attempts to open the documents which I previously had open, which is ~10 PDFs and ~3 PostScript files, and ...
9
votes
9answers
58k views

Checking for bad blocks without formatting

My Mac tends to pause every now then when preforming simple tasks such as right clicking, opening menus and typing (It actually just froze when I started typing this question.). I've read in a few ...
9
votes
7answers
61k views

How to diagnose repeated OS X hang / spinning beach ball of death?

Here are my stats and brief summary of the problem: macbook pro; mid 2009; 13 inch; 2.26 GHz; 4GB RAM (currently, will elaborate); 10.7.5 The issue I'm having is that the computer constantly gets ...
9
votes
2answers
37k views

Mac OS X Mavericks freezes, stops responding when running out of memory

It happens every other day and the symptoms are weird to say the least. The computer still responds in some sense; I can move the mouse, the volume buttons on my headphones work. They keyboard does ...
9
votes
2answers
2k views

Any way to use ssh to recover a Mac from spinning beach ball of death

On Linux, I can get to a ssh or Ctrl-Alt-F1 console and type in a command to restart the window manager. Is there any equivalent for Mac Mountain Lion? I tried ssh'ing to a frozen Mac, and I could ...
9
votes
3answers
666 views

How can I isolate macOS 10.14.6 Mojave freezing 1-2 seconds every few minutes except for sound and the mouse?

Since a week or two I am experiencing a very strange problem on my MacBook Pro running macOS 10.14.6 Mojave. (Build 18G103) No matter what I'm doing, typing something in a browser or text editor or ...
9
votes
2answers
7k views

com.apple.hiservices-xpcservice results in frequent hangs and freezes in my mac

Update (2019): The issue still persits even in macOS Mojave, tried everything I could find, nothing seems to solve the issue as of yet! Problem: com.apple.hiservices-xpcservice hangs repeatedly ever ...
8
votes
11answers
11k views

Mac OS X is not creating a swap file

I recently started running into a lot of memory issues on my mac running High Sierra. Rather than the force quit window coming up, my system would freeze completely and the only way to recover is to ...
8
votes
4answers
3k views

iMac inconsistenly hanging and showing beach ball

This past week, I've been having constant problems with my 2007 Aluminium iMac (2.4GHz, 3GB memory, 320GB HDD). I've been downloading using Transmission, and when (sometimes) stopping or starting a ...
8
votes
2answers
8k views

MacBook Pro freezes with beachball on login (OS 10.7 Lion)

EDIT 8/21/11: It appeared that this issue may have been fixed in Update 10.7.1, but it reoccured just recently. Recently after upgrading to Lion, my MBP refuses to allow me to login. I can see the ...
8
votes
2answers
2k views

My iPod Touch / iPhone is frozen!

My iDevice is frozen on one screen and won't let me do anything. What can I do to fix it?
8
votes
1answer
6k views

External hard drive slows down computer and makes processes freeze

I have a very odd issue with my external USB3 hard drive. Sometimes, I can use it with no problems, but sometimes it slows down the entire computer and freezes processes. For example, spotlight might ...
8
votes
4answers
3k views

OS X Finder hangs on tagging

I'm having a problem with the new tagging feature in Mavericks and I have a feeling it might go deeper than just the tagging. The problem is this: When tagging anything on Mavericks the Finder ...
8
votes
2answers
4k views

MacBook Pro 2013 keyboard and trackpad completely freeze

The problem Every once in while the keyboard and trackpad completely stop working and I have no way to affect the software. The mouse pointer is left frozen exactly where it was when the problem ...
8
votes
0answers
431 views

Macbook freezes upon waking when connected to VPN

I have a 2019 15" MacBook Pro running OS X Mojave (10.14.6) (company laptop, so can't update yet) and I have a weird problem. When I am connected to the company VPN (via the built-in client, no third ...
7
votes
1answer
4k views

Momentary freeze in Mac OS X on attaching a USB device

This seems to have started only recently, but every time I attach a USB device or removable media (SD Card) to my MacBook Pro running OS X 10.8.3 the mouse cursor freezes for a few seconds. The screen ...
7
votes
2answers
5k views

iMac hangs trying to restart or shutdown 10.13.3

I'm having an issue with my iMac where it hangs during shutdown. It gets to a black screen with just the cursor showing. I am able to login from another computer via SSH and see that it's doing ...
7
votes
5answers
26k views

Mail App keeps hanging (not crashing) on Yosemite 10.10.3

Mail runs fine for a few hours, then hangs. I must force quit, then reopen. It runs fine for another few hours then crashes. This is a fresh install of Yosemite, and I rebuilt the index and tried ...
7
votes
2answers
23k views

Yosemite won't boot any more after attempting to enable FileVault and TRIM

I installed Yosemite yesterday and it was working fine. Now whenever it tries to boot it runs Safe Mode and fails 1/3 of the way through. From what I can remember I went to enable FileVault and ...
7
votes
3answers
3k views

Complete system hang, graphics-card related (“IntelAccelerator: bad busy count (255,1)”)

I have just upgraded my machine to Yosemite (as of three hours ago), and I have encountered my first hang (on this laptop, which is about a week old). The system locked up quite hard, with only the ...
7
votes
3answers
12k views

VLC keeps freezing on Mac OS X El Capitan

I have the latest versions for both El Capitan and VLC, however, ever since I've upgraded to El Capitan, VLC keeps freezing during playback. Generally to solve this: I have to pause, exit fullscreen, ...
7
votes
1answer
3k views

Why does my computer auto-restart after freezing (Lion 10.7.3), even when disabled?

Since recently upgrading to "Lion 10.7.3" I have had repeated instances of the machine hanging/crashing without warning and then silently restarting. Problem is, that such automatic restarts happen ...
6
votes
1answer
3k views

How to kill stuck Screen sharing authentication dialogue?

Sometimes when connecting to a screen sharing machine in Finder, the authentication dialogue hangs indefinitely. The only way I've been able to get rid of it is log out. So far I've tried killing a ...
6
votes
3answers
6k views

How bad is it for a Mac to forcefully restart it when it freezes?

I have a 2011 27" iMac running OS X Lion. There is a known bug when iMac, after waking up from sleep mode, freezes while playing video (Flash in my case). It does not respond to any key combination ...
6
votes
3answers
32k views

What do I do when OS X freezes?

It happened to me twice recently. I was just using my iMac normally, like browsing the web, and it suddenly freezes. I can move the mouse, but I can't click on anything. Keyboard not functioning at ...
6
votes
1answer
5k views

Time Machine Backup freezing computer

Time Machine on my computer is trying to backup onto a external hard drive, but the only thing I get is the famous beach ball of death which makes my computer extremely slow. When I go to cosole.app ...
6
votes
3answers
9k views

Bluetooth not available anymore

I have a Macbook Pro (late 2011) with the latest OS X (10.9.4) and once in a while the Bluetooth subsystem disappears and the system hangs for a few seconds every ~10 minutes. The icon in the menu bar ...

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