IMac freezes up after awaking from sleep mode. I then Force it to shut down

My iMac freezes up after awaking from sleep mode. I then Force it to shut down and it freezes up during startup. Any clues out there? This is a first generation iMac G5 17".

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Well, I think I have finally come up with a solution. It seems this issue happens when it auto locks. I turned auto lock to "never" in settings, and the issue has not happened since. Seems there may be a bug in this feature???
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IMac with waking up randomly from sleep mode

Hello everybody!
Since I installed Snow Leopard (all updates done) my iMac is randomly waking up from sleep mode without any reason that I know of. Some days everything is fine, next day it wakes up when I am at work and retrieves mails (thats how I see it is awake).
Also I set it up to shut down after 1h idle time- this does not work as well.
Any ideas how to track the problem?

re:
Just happened again.
My activity monitor:
123 AirPort Base Station Agent 0,0 3 856 kB
2974 Aktivitetsmonitor 8,6 6 20,2 MB
293 AppleSpell.service 0,0 2 5,8 MB
105 Dock 0,0 3 10,0 MB
107 Finder 0,0 6 35,8 MB
109 fontd 0,0 3 5,0 MB
129 GeekTool 0,9 4 3,6 MB
188 GrowlHelperApp 0,0 3 10,3 MB
127 iTunesHelper 0,0 3 1,5 MB
99 launchd 0,0 2 836 kB
29 loginwindow 16,5 2 7,5 MB
152 Mail 0,0 7 60,3 MB
2977 mdworker bjarne 0,0 3 3,2 MB
110 pboard 0,0 1 488 kB
128 Quicksilver 0,0 3 19,6 MB
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AIR event when computer awakes from sleep mode?

Hi,
I have an AIR app that displays a new set of photos every 12 hours. Some users are complaining that the photos are not refreshed after 12 hours if the computer had been in sleep mode over night.
At first I thought possibly the Timer was stopping when in sleep mode so I instead modified the Timer to execute every minute and just check to see if the last refresh was at least then 12 hours ago. This still did not solve the issue.
Is there an event dispatched I can listen for to detch when the computer awakes from sleep mode? Or if any one has any other suggestions.
Thanks,
Ryan

No answer till now. Better close it.

P67A-GD55(B3) freezes on wake up from sleep mode (active control center)

Hi,
Problem with my PC lock screen freezes on wake up from sleep mode (active control center)
When in sleep mode while using the control center on Windows, wake-up, freezes the lock screen.
So, turn off the power. Then after about 3 seconds long, starts up automatically. And also freezes the lock screen.
So, turn off the main power wait a while and it recovers.
If not running the utility control center, no problem.
（ fan control only on the control center. Does not overclock ） control center 2.2.098 ～ 2.5.045 similar problem.
System:
MSI P67A-GD55 (B3) - BIOS 1.19
i5 - 2500K
Mem: Patriot PVV38G2000ELK 2x4GB (use 1866)
VGA: Giada GTX570
PSU: Antec HCP-750
HDD: OCZ Agility4 128GB, 2nd seagate ST3500418AS 500GB
OS: Win8 x64
Sorry for poor English

in that case (no install),Sleep & wake-up to no problem.
CC is installed state. If not running the CC on Windows, it's no problem.

Cannot login after awaking from sleep (login screensaver sleep problem)

After awaking from sleep or returning from the screensaver, the "loginwindow" of system.login.screensaver (visible after checking "details") does not recoginze the correct password. It is not possible to login this way anymore.
Very annoying!
Fortunately, I found a workaround using the functionality to switch users. The standard OS X welcome screen recognizes my password.
Anyone experiencing the same or with a way to correct the initial problem?
PS: the user account in question is a "network user"; it works as expected for a local user

More info:
It seems to be the screen going to sleep, not the computer. When I come back and touch the mouse or the keyboard, as the screen lights up, there is a flash of the web pages I left up, then they vanish.
Yikes!!!

Black screen after waking from sleep mode - Compaq Presario CQ5110F

My mother's computer has been having the problem listed in the subject -- after waking from sleep mode, the monitor just stays black, and won't come back. After trying everything I could find online, I eventually found the bios update which claims to fix the exact issue. The problem is that I guess my mother had opted to upgrade to Windows 7, while the bios update seems to only work for Windows Vista, as I get the following error message: "Your system does not meet the minimum requirements for this update. Update has been canceleld. (9998)." I've tried running the update in Vista compatibility mode, with no luck. I've tried using a different monitor, I've updated all the drivers, Windows Updates are all current, I've cleared CMOS. Any idea on how to fix this? It's very recent; only for about the past 2 weeks has this been happening, while we've had the computer for over 3 years. It's quite a waste of energy to keep it on all day.

Hello liltwix,
When taking your computer out of safe mode the screen just remains black, is that correct? I will try to help you with this issue.
I understand you upgraded from Vista to 7, was that when the issue started or has the computer had windows 7 installed for some time before this problem started?
Please respond back at your earliest convenience.
Thanks
Clicking the White Kudos star on the left is a way to say Thanks!
Clicking the 'Accept as Solution' button is a way to let others know which steps helped solve the problem!

My zero Key isn't working after waking from sleep mode. This is a real problem for me because my password contains a zero

My zero Key isn't working after waking from sleep mode. This is a real problem for me because my password contains a zero. I don't recall spilling anything or jamming it just that it worked before I closed the computer and wasn't after I woke it up.
I would like to fix the key but if that's not possible right away , Is there a way to reset my password without being able to type with a key thats in it?

Start by swapping the keyboard. You don't need to spend a fortune, and handy to have spare. USB cables can be bad even new.
When I had some problems Apple wanted to blame the mouse, keyboard, cable, but in the end I found
A. run Disk Warrior
B. Corrupt pref or conflict with version of Hardware Monitor and other background tasks

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Hello, everyone. Since I updated to Yosemite, my MacBook Pro won't reconnect to my Wi-FI automatically after waking from sleep mode.
Does anyone know how to fix that?
Thanks in advance,
Arthur.

Hi, arthurpacifico.
Thank you for visiting Apple Support Communities.
Here are a couple troubleshooting steps that I would recommend trying to see if it corrects this issue.
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
Reset your computer’s PRAM
http://support.apple.com/kb/HT1379
If the issue persists, try the troubleshooting steps I have attached below.
Symptom: After restarting or waking from sleep, my computer might not connect to the Internet
After waking from sleep or starting up, your computer may not show that it is connected to a Wi-Fi network.
After start or wake, your computer may indicate that it is connected to a network, but does not connect to the Internet.
Solution
Use these steps if your computer does not automatically connect to your desired Wi-Fi network.
Check your TCP/IP settings in the Network pane of the System Preferences. Click the "Renew DHCP lease" button
Choose System Preferences from the Apple menu.
Choose Network from the View menu.
Select Wi-Fi, then click the Advanced button in the lower-left hand corner of the screen.
Click the TCP/IP tab from the top of the screen.
Click the "Renew DHCP lease" button.
Select the Wi-Fi tab and view your Preferred Networks list.
Select each network and click the minus sign to remove those networks from your Preferred Networks list.
Click OK and close the Network preferences.
Remove your stored network passwords using the Keychain Access Utility.Restart your computer.
Open Keychain Access from /Applications/Utilities. Your window will look like this:
Remove your AirPort network passwords from the login keychain: Select the "login" keychain from the Keychain sidebar. Click the "Kind" column to order the list of keychain items by their type. Remove all entries of the kind: "AirPort network password".
Remove your AirPort network passwords from the System keychain: Select the "System" keychain from the Keychain sidebar. Click the "Kind" column to order the list of keychain items by their type. Remove all entries of the kind: "AirPort network password".
Note: The above steps will remove your Wi-Fi network passwords. If you do not know them, or if your network does not use passwords to restrict access, you should contact your network administrator.
Join your Wi-Fi network. You will need to enter your password for your network again if it requires one.
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/ht4628
Cheers,
Jason H.

Satellite A660-18N - Powers off after waking from sleep mode

My Satellite A660-18N powers off 2-3 seconds after waking from sleep mode. I upgraded the memory from 4GB to 8GB, using Crucial's website, so I know it's compatible. BIOS is updated to 2.00.
Not sure what to do, how can I fix this without turning off Sleep mode completely?

Hello
>Currently I've turned off sleep mode altogether. I've also reset the BIOS settings from the boot menu but it hasn't fixed the problem
And why you dont test it with pretested memory modules from an authorized service provider? The part number for such RAM is PA3677U-1M4G. Its one 4GB DDR3-1066 MHz memory module.
Furthermore it would be interesting to know who says that Crucial memory is compatible Maybe its compatible to other Toshiba notebooks but fact is you have problems after waking from sleep mode and this happens only with Crucial memory and not with preinstalled modules.
I dont think somebody here can provide you a solution for this because its just a compatibility issue and its user to user forum only.

My desktop background disappears after waking from sleep mode

My desktop backgroung disappears after waking from sleep mode. Just converted to Lion.

I spoke with Tech Support this morning. Apparently this is a known issue with Lion. I found it interesting that the rep insisted on saying that "it is the way Lion functions" instead of admitting that it is a GLITCH in the programming. He even said that it happens randomly and not on all computers and not all users experience this. That ought to tell you that it's a glitch. Anyway, there is a "workaround" which is what you do to put a bandage on a persistent wound that should really get surgically stitched:
You either have to log out every time you leave the laptop, or you have to change Energy saver preference to set the display to go to sleep AFTER the computer is set to log out (in Security preferences).
Here is the article that instructs us on applying the bandage::
http://support.apple.com/kb/TS4135?viewlocale=en_US
Suffice it to say that Apple does not plan on stitching this one up any time soon..

Network issues after returning from sleep mode

I'm noticing this issue on T440, Twists, T420s, whether it's Windows 8, Windows 8.1 or Windows 7. Sometime around the end of last year and the beginning of this year, my users suddenly started reporting problems with the machines after returning from sleep mode. The network adapter (whether plugged in or using wifi), would show limited connectivity and would not connect to the internet until the machine is rebooted.
I've tried updating drivers, using system restores, disabling the network adapters from shutting down to conserve power, OS network diagnosis & network adapter resets, none of which has worked. Hibernation is disabled on all machines.
The only fix I have is to reinstall the OS over the top of the system and reinstall all updates. Looking for help with this issue.
Thanks!
Solved!
Go to Solution.

Hi Mertz74,
Thank you for replying us back!
Please check with uninstalling power manger and reinstall it with latest driver.
Download chipset driver from Lenovo drivers page and install it.
Please check with above option to resolve the issue.
Below is the link to enter the downloads page and download updates accordingly, please click on "Select Product" then in "QUICK PATH" enter the MTM no. select the exact model.
http://support.lenovo.com/en_US/downloads/default.page#
Hope this helps. Do post back if issue persists!
Best regards.
Hemanth Kumar
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WIFI slow to reconnect when phone awakes from sleep mode

Today, I updated my LG G3 to Android Lollipop. I have WIFI set to turn off when in sleep mode (unless device plugged in). Now when the phone comes out of sleep mode, it takes up to a minute before the WIFI connection is reestablished. With the previous version of the OS, WIFI reconnected immediately after awakening from sleep mode.
Has this problem been reported to Google? I have not found a way to report bugs directly to Google as a user.
Thanks,
Tim

Joel, thanks for your reply. I've followed your instructions, and the problem persists. I assume by reset, you mean reset to factory settings. No. It has been rebooted, and powered off/on several times since the OS update. I have no idea whether there are any apps that use WIFI only. How would I know what each app may require?
Since this happened immediately after the OS update, the logical conclusion is that the update caused this behavior. In my 45 years as a software engineer, I can say this is the most likely cause.
Now, here are two more observations. When I first power the LG G3 up, the WIFI connection is made immediately; before I even unlock the device. So, we know the OS is quick to establish connections upon power up. It is only when coming out of sleep mode that the WIFI connection is slow to be reestablished, taking about a minute as opposed to immediately with the prior OS version.
The second observation is that with my wife's Samsung Note 4, which was updated to lollipop several weeks ago, I do not see this delayed WIFI connection after being awakened from sleep mode. With the Note 4, the connection is reestablished immediately with lollipop as with the prior OS version.
Considering the difference in behavior between the Note 4 and the G3, I would conclude that LG made a firmware change for lollipop which is causing the delay, or LG didn't make a necessary firmware change for lollipop which is causing the delay. At this point, I would say this is an LG G3 problem. It should be easily reproduced. Under the advanced WIFI settings, the setting "Keep WI-FI on when screen is off" should be set to either "Only when plugged in" or "No".
Thanks again for your help.

Monitor wont awake from sleep mode

I have a Pavillion H8-1130A and HP x23LED purchased March 2012. The screen won't awake from sleep mode. I can use the mouse successfully with my laptop. I have tried unplugging power, switching around the DVI cables (I don't have a VGA cable to try). Any suggestions?

I recently purchased an HP Envy 15T Laptop. I am also having the same problem. When set in sleep mode for more than 3 minutes or so, computer will not wake up. Power button turns to solid, keyboard lights up, but only black screen. The only thing I can do is remove power cord & battery and then replace. I can then start computer. I contacted Costco Consierge. They took me through a sytem restore to an earlier date I had on file but problem did not correct. I am next trying to contact HP support for assistance.

IMac freezes up after awaking from sleep mode. I then Force it to shut down

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