Intel Mac :: Loses Wireless Connection After Wake Up From Sleep Mode
Feb 23, 2012
My iMac is set up wireless. Every time it's allowed to go in sleep mode, it loses wireless connectivity. Then, when I wake it up, I must go to System preferences, Network and request it to reconnect to my home wireless network. It always does this successfully, but it's quite annoying that it seems unable to achieve this on it's own. My iPad 2 and kindle can do this, why not my iMac?
Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)
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Mar 22, 2012
Every time I log into my imac system, i have to reestablish the network connection running the diagnostics. This only became an issue after updating the OS; I run a time capsule as my modem. This is very irritating, any recommendations?
Info:
iMac (27-inch Mid 2011), iOS 5.1
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Feb 11, 2012
My iMac loses wif connection when it goes to sleep. How do I correct?
Info:
iMac (21.5-inch Mid 2011)
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Feb 24, 2012
Mac owner for 2 months now and have had no problems till today...had to reboot to wake up from sleep mode...one time occurrence or start of an issue?
Info:
iMac (21.5-inch Mid 2011)
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May 5, 2012
My Mac would not turn on this morning from sleep mode. I pressed the power button and nothing. Then I did it again and heard the fan shut off inside so I tried again and up it came. Also I cannot wake my Mac up unless I press the power button. I used to press any key on the keyboard or move the mouse and it would wake up, but now that doens't work. I don't know if this could be a reason, but my mother has a horrible habit of unplugging it when it storms. It's always asleep and I've told her not to do that and to make sure it's turned off before ripping the cord from the wall. But she continues to do it when it storms.
Info:
iMac
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May 28, 2012
Computer would only start after sleep mode if I unplugged the power cord. The power button would not do anything, even if I held it for a long time.
Shut down and start up would work normally. Only effected sleep mode.
After much trouble shooting I found that I had a bad USB hub. Everything on the bad USB hub would work fine so I didn't suspect it.
Info:
iMac, Windows 7
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May 13, 2012
For some unknown reason I will put my mac to sleep and at sometimes it will wake up without any command to wake up - why this happens and how to correct it?
Info:
iMac
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Jun 22, 2012
After using my MacBook Pro I close the laptop and it goes to sleep. Later when I return to it and open it, sometimes it can't find the network. The computer is able to see that I have an Apple Network available, but it won't connect.Sometimes when I try to connect, it gives me a timeout. How I fix it is to walk over to the router and unplug it and plug it back in. After I get the green light again, I go to the Apple Network and it works.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Jan 30, 2008
My iMac is about 4 months old and about twice a month after sleeping overnight the computer will not wake up. After several attempts pressing keys on the keyboard and clicking on the mouse, I have to unplug the Mac and then press the start button on the back
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Jun 19, 2014
When I need to go somewhere or just eat lunch, I put my iMac to sleep. After that, when I come back to wake it back up, it stays black.
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Apr 15, 2012
My 2011 Macbook pro i7 has a chronic problem: as soon as it goes to sleep, the wireless connection is lost, and has to be manually coerced back to the computer by turning the wireless off, waiting several seconds, turning it back on again, and waiting for it to find the router again. It finds the router in a few more seconds, then everything is OK until it goes to sleep again. Â
A real pain in the butt, and shouldn't be a problem on a supposedly high end computer. Â
Info:
MacBook Pro, Mac OS X (10.7.3), Macbook Pro i7 15"
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Mar 16, 2012
every time i open my macbook pro from sleep mode there is no internet connection, even though my wifi bars are full and black and my home router is found and ticked. after a 1-2 minute delay my mac then connects to the internet. this happens every time i open my laptop from sleep mode. i have to wait 1-2 mins. this has only started to happen in the last few days and is driving me mad as it shows it is connected to the internet.
Info:
MacBook Pro (13-inch Late 2011), iOS 5.1
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Nov 16, 2010
Everything was ok until last night when I noticed this. I'm sure I didn't change anything manually in the network settings, but now I can't keep a connection for more than 10 mins. To get it back again I have to shut the airport connection (checking the diagnostics, I get a red light on the ISP circle,yellow on Internet and server) and that lasts me another 10 mins
so far I've tried sending pings, deleting this network entry and adding it back,changing the router position, but no luck. I'm able to check the router settings (tp link), but not sure what I should be looking for
the laptop works fine at my sister's place. It's just this network at home I'm having troubles with. the same thing happened all of a sudden with my imac,so I left the Ethernet cable connected to that, as it's right next to the router and it works fine.
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Nov 30, 2014
My iMac wake unexpectedly from sleep mode then goes back to sleep 00:10-00:15 later. Yosemite is current.
Info:
iMac, Mac OS X (10.6.8)
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Dec 21, 2009
I just had the original 300 GB hard drive fail in my aluminum 24" inch iMac running the latest update of Leopard. I wasn't able to save it using diskwarrior (diskwarrior said it was some sort of mechanical failure) but I was able to recover most of the data from it by booting from an external hard-drive.
So I went out and purchased a brand new Western Digital Caviar Black 1TB drive. The install went fine, it found the drive partitioned it and installed Leopard successful. Then is crashed and disappeared when I left it alone to run all the software updates. I came back and the computer was stuck on "Restart Required" after downloading all the updates. I went to hit restart now, and the system just hanged, wouldn't do anything. So I hard powered down the system and restarted it. It came up with nothing, just stuck on the White Screen of Death. So I plugged the external drive back in and booted from it. Mac OSX couldn't find the drive and diskwarrior would crash if I tried to run it. I tried to boot up from the OSX start-up disk and it couldn't find the drive either.
So I took the case apart and made sure all the connections were solid and the drive was mounted correctly. Everything looked fine so I plugged it in and it started up fine. Finished the updates and the iMac ran great.
So I thought maybe it was overheating, so I've installed smcfancontrol and started to monitor the temp of the drive. I also took the mac apart again and sucked out any dust in the fans or vents. The drive never goes over a 105 F, so it doesn't seem to be overheating.
However, this is where the problem is consistent: everytime the iMac goes into sleep mode, it crashes and the iMac is unable to find the hard-drive again. Unless I unplug it completely for 5 minutes or so. Once I unplug it, it finds the drive and operates like a champ.
I think maybe there's an issue powering the drive back on? Anyone have any ideas?
And my follow up posting later that day:
Quote:
So I ran some tests just to see if was an overheat issue, hard drive malfunction, or sleep issue. I decided to start encoding a video, pulled up Word, Power Point, Excel, started downloading all 6000 mail messages off my server (I never delete my e-mail :-/), also started installing iLife 09, and pulled up a bunch of webpages in Firefox with multiple tabs.
However, I shut off all sleep mode options on the hard drive. I let it run for an hour and came back. Everything is fine, hard drive isn't locked up and smcfancontrol shows the hard drive running pretty hot (115 degrees) but not so hot I'm worried. So it's definitely something to do the hard drives going into sleep mode and not powering back on. It's also weird that I have to leave the computer completely unplugged for 10-15 minutes before the drive is recognized again.
So turning off sleep seems to be my work-around, however, this shouldn't be a long term solution. I'm worried that there is a bigger issue with the iMac, but I'm not sure what would cause this. I've been a PC guy for years, this was my first Mac, and honestly I don't know enough about the inner workings to narrow this down. I would assume this would have to do with the motherboard in some way? But I'm not sure how you would even test it.
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Jan 13, 2008
I have never had a Mac Pro before, but I have owed 2 Imac's and a power mac and 2 MacBooks. The issue I am having is when I put the machine to sleep when I wake it back up it is like it does a restart. It does not start me back up where I was before.
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Dec 20, 2010
If I put my MBP to sleep (by closing the display) and then decide to use it right away (in a minute or less), are there any risks to the hard drive involved or any sort of issue?
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Apr 20, 2012
When I close then open the lid on my MacBook, it will not wake up from sleep mode. I have to reboot by holding down the power button for 10 sec. When it restarts, it takes a long time to get past the gray screen with the apple logo. I also have this same problem when it goes into sleep mode, when left idle. I have since changed the settings so it will not go into sleep mode when idle in system preferences. I have reset PRAM and SMC, but the problem still persists.
Info:
Macbook (13-inch early 2008), Mac OS X (10.5.8)
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Jul 1, 2009
When i wake my 2.4 Ghz aluminum MacBook with 4GB ram from sleep it takes the AirPort about 10 minutes to connect to the internet. The status is that the AirPort is connected but there is no internet coming through. What could be making my MacBook take so long to connect to the internet?
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Oct 20, 2007
I've been fighting bad sleep crashes for over a year. Sometimes it would freeze when it started sleep, sometimes when trying to wake from a sleep. I've spent countless hours researching the problem, reading everything on the boards. I tried resetting the PMU, turning off Bluetooth, removing all USB, and all of the other suggestions. Nothing alleviated the problem. Last week I replaced the lithium battery on the mother board because it wasn't keeping the correct time. So far it is sleeping and waking perfectly for the first time in ages. No more freezes or jet engine fans. I have my fingers crossed. Power Mac G5 dual 2 GHz, purchased June, 2003
Information:
Dual G5
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Sep 11, 2008
My G4 powerbook (running Tiger) seems to be stuck in sleep mode. I turned it on and the screen remained black but the sleep button is flashing on the front.
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Jun 18, 2009
I can be in the middle of using an application, browsing a web-page, or basically any type of function when it will put itself into sleep mode. When this happens, I cannot get it to "wake up". I have to disconnect it from the power source, turn it over and remove the battery, wait a few seconds, then hit the power button, put the battery back in, then restart it. This is the only way I have found that will get it to come back to life. I don't like doing it, but I really don't see what other options I have.
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Jan 14, 2010
When I try to print from my Powerbook G4 to my HP 6500 wireless printer it will not work. I have found out that if I turn off/on the printer then it will print. So, it must be an issue with the computer not waking the printer from a sleep mode. Anyone have a solution to this that doesn't consist of me turning off then on the printer? I have tried to reinstall a few times with no avail.
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Oct 18, 2009
I'm hoping I can get some ideas and guidance on this. A few months ago I bought my wife a 17" MBP. At the time we had a D-Link DIR655 Wireless-N router and the MBP worked great with it. If I woke the machine from sleep the reconnection to the wireless network was pretty much instantaneous.
Unfortunately that router started to flake out and I replaced it with what is considered to be a top of the line router, Netgear WNDR3700. This router has a dual N band. One band is N only the other one is B/G/N. I have attached the MBP to both networks.
When the MBP wakes up it takes up to a minute for the wireless to be re-established. Weirdly it will reconnect to the SECOND of the two networks that are listed in priority order on the advanced wireless settings.If I remove either of the two networks and only have one listed, sometimes the MBP will take over a minute to eventually get reconnected.Does anyone have any thought on this? It's very frustrating and I haven't figured out why the reconnection is so slow with this very high end router. All my other wireless devices maintain their connection to the router very well with no drops or reconnects.
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Feb 6, 2012
My connection via wifi keeps dropping after sleep mode. I am running Lion on Imac, new out the box a month or two ago and all up to date. I have tried the whole adding a new connection and removing all connections and starting again and still it keeps happening.
Info:iMac, Mac OS X (10.7.3)
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Jun 26, 2010
Evey time it goes to sleep or I turn it off it forgets the fact that there is any wireless around. I have to look for the networks. Then if it wants to will find them and trying to connect to my own wireless network (apple extreme) is a challenge. I do have parallel desktop installed, could that be the problem?
Here is some info:
Model Name:MacBook Pro
Model Identifier:MacBookPro5,1
Processor Name:Intel Core 2 Duo
Processor Speed:2.4 GHz
Number Of Processors:1
Total Number Of Cores:2
L2 Cache:3 MB
Memory:4 GB
Bus Speed:1.07 GHz
System Version:Mac OS X 10.6.4 (10F569)
Kernel Version:Darwin 10.4.0
Boot Volume:Macintosh HD
Boot Mode:Normal
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Apr 23, 2012
why does my imac lose internet connection after coming out of sleep mode and sometimes from power up. This is something that started about ten weeks ago.I have been all though road runner's diagnostics and etc. So now they insist that its with my imac.
Info:
iMac, Mac OS X (10.6.8)
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Mar 26, 2009
I am new to the IMac experience which I have to say so far I love it but I am having 2 problems.
1) Every time my computer goes to sleep I lose wireless connectivity and I have to log back in where as my other computers I dont have to do this it signs back in automatically
2) Some how I lost Spaces from the icon bar at the bottom of the screen and can not figure how to get it back down there.
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Dec 8, 2009
Recently my MBP (mid-09) has had issues with airport as it continually loses connection and I have to turn it off and on again in order for it to work again sometimes within seconds of doing so. I would opt for a fresh install but my dvd drive seems to be scratching the dvds and it rendered my Windows XP DVD useless when I tried to install that. So it wouldnt be ideal unless there is a method of doing so without using the dvd drive.
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Feb 1, 2012
When my computer goes to sleep it will not wake up, and I have to shut down using the power button on the back and then restart. I called support and they advised me that this only happened when the computer went to sleep on it's opwn but not when you manually put it to sleep, But that proved not to be true. It will not wake up under either situation? The support persontold me to logonto applke and re-install the sytem software which I have done but that did not cure the problem either. I have my preference set to never sleep. I am ar]t a loss as to what to do now as when it goes to sleep or I put it to sleep i sometimes will not start up even after shutting down and restarting.I am on 10.7.2?
Info:
Imac G5, Mac OS X (10.7)
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