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11

Disable Automatic Graphics Switching EDIT: In diagnosing the issue, you should update to the latest 10.7.2 update After browsing the Apple Discussions Forums more thoroughly, it seems that disabling automatic graphics switching in the energy/power settings of system preferences seems to prevent the freeze. This forces the MacBook Pro to use the ...


10

Suspect an issue affecting the WindowServer process (long edition) a more generic edition of this answer appears under How do you get system diagnostic files from OS X? power users may prefer to read nearby Suspect an issue affecting the WindowServer process (brief edition …) The symptoms you describe are familiar but not commonplace and in my case, ...


7

The % CPU is relative to 1 core, so 726% is using almost 8 cores. Core is loosely defined, so 1 Hyper-Threaded, "virtual" core looks like 2 cores to Activity Monitor. What type of system do you have? If it is just 2 cores (which is seems to be) then nik's answer sounds correct. A late model 8-core system can look like 16 cores to Activity Monitor:


7

It's very unlikely you downloaded something or broke everything with one download. Also - with at least 4 things not working well - please protect your pictures, emails just in case it's a hardware failure. When only one thing is broken - it's often worthwhile to poke, learn, understand what broke and look for a fix of that one issue. For any group of ...


7

The Mac models that support this have a secondary processor, independent of the CPU (it's the LOM on Intel Xserves, SMC on regular Macs). Basically, the secondary processor can have a countdown timer set up, and reset the CPU (forcing a reboot) if the counter hits 0. Meanwhile, a process running within OS X (originally it was a program called watchdog, but ...


7

Several users have found this to work (and as far as I can evaluate, it fixed it for me as well): Log in/switch to an administrator account open Terminal sudo rm /Library/LaunchAgents/com.google.keystone.agent.plist sudo rm /Library/LaunchDaemons/com.google.keystone.daemon.plist


6

Holding the power button and letting the System Management Controller SMC perform an immediate halt is no worse than letting the software initiate the halt. I suppose you could come up with a scenario with the mac in free fall or something relating to the head not being parked, but modern hardware is designed to handle power losses from the wall outlet with ...


6

There is usually no correlation between a stuck process of top and a non-responding application: stuck means that the process is currently un-interruptible which usually is the case if the process is waiting for a disk or network data block to be read (or similar low-level stuff). Technically speaking the process is executing in kernel space (aka Unix ...


6

If you can't launch or switch programs (I find Spotlight is a good way to do this if everything else is hanging, just hit ⌘Space, but it may not work in your case), you could enable SSH access ahead of time, and then use another device to log in and check what's hogging your CPU. Open Sharing Preferences and enable Remote Login. Then you can connect via SSH ...


6

Do you happen to have the Android File Transfer application installed? Various users on macrumors have noted the same issue, and have narrowed it down to having AFT installed. I'm getting the same problem, and I too have AFT installed, but I won't be removing it any time soon as it's the only way to get anything to/from my Android devices.


5

I'm going to take a wild stab in the dark guess and say that this is related to the highly documented "Mountain Lion wake bug" (at least that's what I've dubbed it.) It's been discussed in a variety of threads on apple support forums, but probably the most successful I found was this one. I had the problem too and I found that there was one simple fix on ...


4

Using the fs_usage command to view file system activity If you're happy working in Terminal, a result from the following routine might help to estimate the causes of slowness. open Preview then alt/optioncommandq to Quit and Discard Windows in Terminal, open a new window paste the following line to Terminal then key return or enter sudo fs_usage cmd ...


4

Search for the Starcraft 2 process in the process list. I don't know the name of the binary but something like ps aux | grep -i starcraft should get you there The number in the second column is the PID kill PID or (if this doesn't work) kill -9 PID (if you are not the owner of the process, you can use sudo kill ... instead) Depending on the process ...


4

Number one, backup immediately. At least if it dies you got all your data. I would recommend using a drive scanning utility to check your drive for hardware issues. S.M.A.R.T is useless, its pretty good that telling you that your drive is already dead. All the really good utils aren't free. Techtool Pro has been my tool of choice, however its not cheap. ...


4

A restore of Time Machine back to the drive will not restore it to a bootable state. You must install the OS onto the drive from the install download (Lion) or install disk (pre-Lion). To do what you expected you need to make a clone of your boot drive. Use a tool like Carbon Copy Cloner. It makes an exact copy of your drive. If that drive happens to be ...


4

If you have Terminal.app open anyway (doesn't matter whether it's in fullscreen mode or not): Cmd-T to create new tab/shell ps aux | fgrep /dev/random to find the running cat (you can grep for cat as well but there might be more than one matching line) kill <PID from above> (or kill -9 <PID>) Just be patient, the system may be really slow ...


4

Thanks for uploading the Logfile. There are several entries which could describe the Problems, f.e.: 25/10/13 4:29:58.408 pm WindowServer[125] disable_update_timeout: UI updates were forcibly disabled by application "Mail" for over 1.00 seconds. Server has re-enabled them. 25/10/13 4:30:12.256 pm WindowServer[125] disable_update_likely_unbalanced: UI ...


4

[Perhaps this should be a comment rather than an answer, but I don’t have quite enough reputation points yet to comment. Sigh.] I wonder whether the log is showing cause or effect here. It looks like you have an external drive attached. Since the problem happens at the one-hour mark, and since there are drive-related errors immediately pre-freeze, perhaps ...


3

If this is something that's now happening regularly then it's likely a failed hardware component (which can get expensive if you don't have AppleCare (Pro Tip: go buy AppleCare and register your computer NOW (unless your Mac is more than 3 years old))). But it could easily simply be a corrupted filesystem. Boot from your Mac OS X install disk and run Disk ...


3

You should check the Console logs. My computer displayed these exact symptoms. The console logs displayed this error: kernel[0]: disk0s2: I/O error After reformatting the hard drive and locking out bad sectors, they went away for a time. Alas, they came back, and it seems I'll have to replace the hard drive which is likely failing. In your particular ...


3

I faced a similar problem. I had a bluetooth headset and a wired one. Whenever I disconnected my wired one, sometimes the mac tried to connect to the bluetooth headset, and when it was switched off/out of range, the system would hang for sometime. could be something similar. Can you give the list of speakers/headphones configured on your mac and their order ...


3

Your own advice is fairly good in this scenario. There is a possibility that you have just some serious file system corruption, but usually Disk Utility should catch that. If you want, you can boot into single user mode (CMD S on boot) and it will give you a little file system cleanup command you can run fsck -fy and then press enter, when it finishes you ...


3

I'm pretty convinced that this is a case of a dying drive. All the signs are there. The best thing you can do is get as much data off as possible and then get your machine repaired at an Apple store or authorised service provider. Unfortunately a HD swap on an alu iMac is neither entirely trivial or fun. During the backup process I'd recommend not using ...


3

You are clearly aware of the issues involved and potential solutions. For the safety of your data I would recommend 2 additional things you can do. A disk which makes unexpected noises is probably failing. The failure may happen soon or take some time. Nevertheless, it's always best to assume the worst, to check you backups work and to get a replacement as ...


3

Try running a Disk Permissions repair from Disk Utility. Also, try running a Repair Disk in Disk Utility. Look for any errors in the disk repair and post them here. Take Lion out of the equation, it sounds like a failing hard drive. It's possible that the upgrade brought out underlying symptoms.


3

Is your computer still covered by warranty or do you have AppleCare? If yes, Apple will no doubt replace the drive for you at no cost. But first get an external drive. Do a complete backup on it with a tool like SuperDuper or Carbon Copy Cloner. Once done set startup so that the external drive starts up your machine. Once you start up unmount (dismount) ...


3

I would try adjusting your procedure. Since as noted the quoted steps provided below in practice are causing you to unintentionally wake the Mac from sleep in step 3, which may also problematically be waking it from sleep before it finishes going to sleep in the first place. So in a sense you were telling your MacBook Air to go to sleep and while your at it ...


3

First, make sure your external drive is plugged into wall-power, not bus power. Second, check your system.log for I/O errors. If you find any, then one of your drives may be failing. See my article Recover Failing Hard Drives Third, verify both your boot drive and backup drive in Disk Utility. Do not attempt this until you have confirmed that there are ...


3

What's in the trash? Are you sure it's all stuff that can/should be deleted? If so... Try right-clicking the trash icon, hold the option key, and then click Empty Trash. This should attempt to force-empty the trash. If that doesn't work, open the Terminal and enter sudo rm -rf ~/.Trash/*. The command rm -rf is a dangerous one since it will immediately ...


3

Suspect an issue affecting the WindowServer process (brief edition for power users) The symptoms you describe are familiar but not commonplace and in my case, not frequent. Diagnosis – at the time of the problem, if it recurs Remotely, sudo sysdiagnose After you regain local control, you can analyse the end result. Remotely, top -o state ...



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