Hi, I have a G4 mac Mini running on MacosX 10.4.7. i have This weird problem recently where the system will hang after waking up from sleep. Any clues?

try to used version 10.4.6

I'm using ver. 10.4.8, sometime when my mac wake up from sleep, it appear as black color screen.. i press any key also cannot recover. any idea?

How much RAM you have? Do you have many applications running?
Maybe you can try "Repair Permission".


Black screen might because your Mac switch off the display. Maybe turning on the brightness will do.

This post has been edited by wei: Mar 6 2007, 08:06 PM

mine is macbook 13"... whenever i press any key, the macbook will produce sound. basically there is nothing i can do but hard shut down. how to do "Repair Permission"?

it happens to me once in a while..and im using mbp... a lil bug i guess...

yup...happened to me too...
btw i m on mbp...
i think so far only once or twice...
hope nothing serious

Go into your Applications folder > Utilities > Disk Utility

Select your harddrive, Repair Permission.

Best is to shutdown your mac before you sleep. than you don't have to waste time fixing the hang thing once you wake up.

@lilzany,
I think what TS meant is that the system hangs when it wakes up from its sleep, not TS's sleep *grins*

@wei,
If the screen's hung, how to go into Repair Permission? Or, do we go in immediately after boot up?

@xandman,
I haven't had any problems waking my system up from sleep mode *phew* though there was once when I had to force quit the system cause God knows what happened ! *ugh*

Well, it's pretty common sense that you'll only able to do that when u re-boot. Now I have to remind myself to put each and every little details out.

And again, we normally don't compare pro system with consumer line system, yours is Macbook Pro (if im not mistaken). The one having issues here is MacMini & Macbook.

wei,
Er..... No, there's no need to put each and every detail out - I just haven't had the need to get onto the Repair Permission thingy so I don't know what it's for ..... Alright, admittedly my brains weren't working earlier this morning - it's still in hospital actually... *gulps*

xandman was referring to his MBP so I thought I'll just let him know i'm not having much issues with mine.

Gosh, what's with the whole world today? So fidgety...*ish*

tink... mayb it's a sign u r losing ur "charms"??? hehehe...

Wei,
anyways... i'm using a MB... my problem is not so much the machine hanging but rather when i close the lid, it used to put the machine to sleep... but now, i close it, nothing happens.. no sleep... no monitor off...

will repair permissions help my little predicament?

try clearing kextcache , you can find this in your /System/Library folder

then in Terminal

Type this

sudo diskutil repairpermissions /

and it will ask for admin password , enter it [or press enter] and it should fix permissions

You can try, but very unlikely. Sounds more like a hardware issue. I hope the magnet inside your lid wasn't out of place. You should call up the apple center on this issue.

supafreak,
I guess the bacteria in me is doing much more damage than I imagined it to be! *gulps*

And, if the suggestions above don't work, may I suggest you try to find time to take it into the Apple Store to get it checked whilst it's still under warranty. Also, perhaps you ter-changed your configurations - may wanna check that out too?

This post has been edited by tinkerbel: Mar 8 2007, 12:11 AM

I am new to mac, so would like to ask if Repair Permission will remove my document or it is just like scan disk option in Windows?

just like scan disk in windows. dont worry

wei,
dang... that's wat i was afraid of... especially after yest i put the machine to sleep... and closed the lid... then i lugged it upstairs to my room... and the apple logo lit up & the dvd drive spun... eventhough i didnt open the lid...

thanks man... will bring it in the apple workshop... crap... another round in the workshop... btw, u hv any idea y this happens?... can it be becoz i leave my machine on 24 hrs a day for almost 1 mth?...

ok, most probably ur lid sleep sensor is not working well.
you can try to disable lid wake.

go to terminal and type:
sudo pmset lidwake 0

to enable it again, change zero in the end to digit one.

I found this tricks extra useful. I wont have problem as my powerbook accidentally wake inside my backpack because I didnt close the lid nicely. I can also open it up for cleaning without waking the machine.

wei..
ok... cool... will give tat a shot... thanks heaps...

But for long term, i still think u should at lease call up service center and talk to technician on this.

Same to other's that having wake issue on thier mac. If you still have warranty on the mac. Don't wait.

---

Added on March 9, 2007, 9:44 amDid some search on Apple.com

here's what i found.
MacMini: http://discussions.apple.com/thread.jspa?m...141069�
Macbook: http://discussions.apple.com/thread.jspa?m...834383�

This post has been edited by wei: Mar 9 2007, 09:44 AM

I have a similar problem with my boss' macbook. After shutdown cannot restart unless you hold the start button for few secs and wait for the errie buzz.

Updated the EFI, it powers down itself for restart and it never able to boot at all. Think I bricked it. Will send it for warranty claim tomorrow.

wei: your explanation is highly likely but i have discovered another reason for my macmini. i think the culprit here is the kvm switc. after taking the bugger off it seems to be ok already. right now i have to press the power button to wake it from sleep as my microsoft woreless keyboard doesnt work while the mac is in sleep more. thanks for your help guys