iMac with Lion not waking after overnight sleep

Hello,

Some news about my tests :

- clear PRAM

- SMC rest

- Switch off Magic Mouse

- I reactivate WiFi for fun

I'm just only use trackpad and keyboard (iMac 21,5, mid 2010).

My system is running well now (no more pb since August 24th.

I didn't make the test with only Keyboard and Magic Mouse (switch off trackpad).

Is someone try this test?

Hello

iMac 27 late 2009 affected by the same long sleep problem.

I noticed that before get my BT and USB unusable the mac wake up for few seconds without turn the screen on than return to sleep.

If this process fails screen remains off but system awake an keybord, mouse, thackpad dead; switch button is the only interaction with the system

I did a ssh to my imac while is in this state , i did try several process kills to reset something without any success. The only thing I can do while on ssh is the halt command to try a gracefull shutdown but the mac goes on loop on a grey screen with the round spinning weel forever.

I'm afaraid to corrupt my filesystem with several power cut so I issued this command

$ sudo pmset -a hibernatemode 1

this switch the hibernate mode from memory to disk and power off the system, at least when it returns from sleep the mac got an HW reset.

Hope this helps other people while APPLE fix this issue.

APPLE come on

Andrea

Italy

setting to 1 is the same as shutting down the system, but much slower. If you want the system to shut down, shut it down. If you want a fast shutting down or sleep set the hibernatemode to 0.

sorry but is not a shutdown, technically is hibernation.

you can leave the mac open and the mac goes to 'sleep to disk' after the grace period you decided in settings (someone call this deep sleep) os you can quick force it by ALT+CMD+EJECT

When you switch it on the mac retrive the memory state from disk and return exactly as you left it (apps, files open ecc) like a normal sleep but little bit longer.

I did that to preserve my filesystem from power cut after a freeze (10 secs switch hold), this is not a solution, is a workaround waiting from APPLE.

Brave people may set to 3.

Cheers

Another update. I am still having the same issues. There is no rhyme or reason as to why this is happening. I've tried everything posted in this thread. I can go a week or 2 and have no issues. Then out of the blue it will happen. The last thing I haven't tried is turning off the screen saver. I'll just set the screen to go blank after 15 min or so.

Very annoying to have to keep a USB mouse/keyboard handy when I spent money on a magic mouse and Bluetooth keyboard. 😠

It also hapenned to me, no bluetooth keyboard and trackpad response when waking up from a few hours of sleep. If I try to reset the bluetooth with a USB mouse, the beach ball comes in.

I read most of this thread, and I am having the problem that most are. iMac 2009. Started when I upgraded to Lion. Neither the BT keyboard, magic trackpad or BT mouse wake the computer. The powerbutton can wake it, but then I have no keyboard or mouse that will work. I hope we see a fix soon.

I am having the same problems i.e, IMAC not waking up. This began after I installed Lion. Hope its fixed quickly.

Im having the same problem with the Imac early 2009. I think I isolated the problem to the Trackpad. Once I turned off the trackpad, the problem goes away. Could somebody else confirm that the trackpad is the one creating the problem? Can Apple look into this problem?

I have to chime in with the same problem: random dropping of bluetooth after sleep. I have tried the solutions listed but nothing works. I'm running a mid 2010 27in iMac.

Just an update to my previous posts...No luck with any of the recommended changes. Resetting (or disabling) the screensaver proved fruitless after a short-lived glimmer of hope.

Two iMacs each with an identical issue.
It's time that Apple recognizes this as an issue affecting LION upgrades and sends out a repair.

try turning off the trackpad if you have any!!

Unfortunartely, the trackpad is not the issue.
This issue is related to the Bluetooth process shutting off during computer sleep.

This issue affects users with any Bluetooth device, not just those with a trackpad.

Well, the trackpad is a bluetooth device as well.