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mac keeps locking up...wont respond to keyboard or mouse

by rptort / November 16, 2009 12:29 PM PST

my mac keeps locking up for some reason...the screen doesn't freeze (the cursor still blinks and videos continue playing), but it wont respond to the keyboard or mouse

sometimes it happens when i hardly have any programs running

any ideas?

MacBook Pro
Mac OS X
Version 10.5.8
2.4 GHz Intel Core 2 Duo
4 GB Memory

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RE: mac keeps locking up...wont respond to keyboard or mouse
by chockyII / November 17, 2009 5:41 AM PST

Does this happen using the built-in keyboard and mouse or do you use external devices? Are they using Bluetooth? I sometimes have my Bluetooth mouse stop responding for no reason.

When it happens try connecting a USB keyboard and mouse and see if they respond.

You could also try logging in from another machine via ssh and see which, if any, processes are misbehaving.

More details may help.

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RE: mac keeps locking up...wont respond to keyboard or mouse
by rptort / November 17, 2009 6:37 AM PST

yea its the built-in keyboard and mouse

i dont have a USB keyboard or mouse...i should be able to get a mouse from a friend next week and ill try that if it happens again

as far as logging into it from another machine...how exactly do you do that? (if you could be specific that would help because im not familiar with doing that)

i dont have many more details...it just started pretty recently maybe a few weeks and i didnt do anything out of the ordinary...its very random too...sorry i dont have anything else

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RE: mac keeps locking up...wont respond to keyboard or mouse
by chockyII / November 17, 2009 8:40 AM PST

Since it started recently can you think of any new software or updates you installed within the same timeframe?

As for logging in from another machine:

First you'll have to enable Remote Login in the Sharing Preference pane.

Once that's done you'll need the IP address of your machine and another machine on the same local network (for simplicity's sake). Any machine with a terminal will do.

From the other machine type "ssh yourusername@123.123.123.123" (don't type the quotes and use your username and IP address on your problem machine. Enter your password when prompted.

You should now be connected to your problem Mac. Try typing "ps -Axcro pid,command,%cpu" and examine the results for processes that are utilizing a large amount of processor time.

Good luck Wink

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RE: mac keeps locking up...wont respond to keyboard or mous
by rptort / November 17, 2009 10:28 AM PST

no new software or anything...thats why i'm so confused because it happened out of nowhere

but i'll definitely try to login to it from another machine next time it happens (which could be tonight or next week..its very random)

i'll let you know how that goes

thanks

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purchase a registry repair disk
by vessup2000 / November 20, 2009 11:06 AM PST

Might have to purcase a registry repair disk (almost everyone has this problem when they first start using their machines)Manufactures should supply these registry repair disk with all new machines!

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What nonsense!
by mrmacfixit Forum moderator / November 20, 2009 9:55 PM PST

Have you had your Mac for long?

Just wondering if you have ever repaired the Registry in it?

If you did, then details of how you managed it would be appreciated.

P

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Registry?
by rptort / November 21, 2009 6:08 AM PST
In reply to: What nonsense!

Yes I've had it for a little over a year, but this has never happened up until recently...I did download a new browser because a friend of mine told me that could be the problem (I used to use safari, now I'm using firefox)...since I've done that it hasn't happened, but there's no telling if it's fixed or not

What's a Registry? And how do you repair it?

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Ignore any reference to the "Registry"
by mrmacfixit Forum moderator / November 21, 2009 8:32 AM PST
In reply to: Registry?

You don't have one, so it ain't broke!

Happy

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quick question
by rptort / November 17, 2009 10:43 AM PST

i tried logging into my macbook pro just to make sure everything went smoothly and i typed the command you posted

it displays:

"PID %CPU COMMAND"

and then of course the info

first of all what is PID?

also, when you say examine the results which are utilizing a large amount of processor time, what exactly am i looking at?

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Virus
by vessup2000 / November 20, 2009 11:02 AM PST

Could be a virus problem.

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(NT) Do you have a Mac?
by mrmacfixit Forum moderator / November 20, 2009 9:56 PM PST
In reply to: Virus
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tried the command and nothing
by rptort / November 30, 2009 1:10 PM PST

hey my mac locked up today (its been a while since it happened)

I used my friends computer and logged in like you explained and typed in that command and the %cpu was all 0. There were random numbers under PID (some small and some large), but I don't know what that means.

any ideas now??

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Try this:
by mrmacfixit Forum moderator / November 17, 2009 8:37 AM PST

Create a new user account and give it admin rights.

Log into the MBP using this new account.

Does the freezing and lock ups go away?


P

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i'll give it a shot
by rptort / November 17, 2009 10:31 AM PST
In reply to: Try this:

i'll try it out and see what happens but it's kinda hard to tell since its so random but thanks

ill reply if anything happens

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things to try
by CalicoTude / November 20, 2009 9:29 AM PST

Have you tried to repair permissions? That helps a lot of problems. Also, the Apple site has several knowledge base topics; one of them might be useful to you. If nothing you try helps, and you can get to an Apple Store, I would suggest booking an appointment with the Genius Bar.

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repair permissions?
by rptort / November 21, 2009 6:09 AM PST
In reply to: things to try

what is repair permissions?

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It's a function of Disk Utility
by Mr. Gregg / November 21, 2009 6:13 AM PST
In reply to: repair permissions?

You'll find that ^ in the Applications/Utilities folder. You can run it from there, or from your OS installation disk.

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Try this:
by mrmacfixit Forum moderator / November 20, 2009 10:03 PM PST

Even though the problem is intermittent, you may have a damaged piece of the system that only reveals itself under certain conditions:

So, replace the System.

Using your OS X installation disk, perform an Archive and Install (Preserve user settings). Your data will be saved, a new system folder will be installed and you will be off and running with a new, clean, system.
Update back to 10.5.8 and see if that has fixed the problem.

P

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