Mac loses wi-fi connection after sleep

Since I upgraded to Mountain Lion, every time I wake my Macbook from sleep, I have to manually reconnect with my wi-fi router, and sometimes it takes upwards of a minute before Airport even senses the various routers within range, includng mine. Before upgrading, when I woke it up, the connection was just there, instantly, for all intents and purposes.
What's up? Is there a setting that I need to adjust?

The loss of connection to wifi after sleep is nothing to do with the TC at a guess.. but typical issue with sleep and wireless.
See the methods of repair for this that Tesserax has prepared.
https://discussions.apple.com/docs/DOC-3411
I presume the upgrade was to Mavericks.. it does have some network issues.
I would certainly use all SMB naming. Mavericks now uses SMB network protocol by default.
So SMB names are not like apple names.
They are short.. keep to less than 20 characters.. less than 10 even better.
No spaces and pure alphanumeric.
Use only WPA2 Personal security with a 10-20 character purely alphanumeric password.
Finally it can be worthwhile using fixed wireless channels.. test say 11, 6, 1 or whatever you have available in Russia. Same on 5ghz use whatever channels are available but try a low one if possible.. eg 40 and a high one like 149.
I strongly recommend you setup the TC this way.. and use separate names for 2.4 and 5ghz at least until you get it sorted.
eg.. TC name.. TC
2.4ghz name.. TC24ghz
5ghz name.. TC5ghz
Then as per Tesserax, clear out all the old names. So you have a clean slate and only use the TC on one band.. try each and see if it is reliable.

Similar Messages

My iPad (1st gen) loses Wi-Fi connection after sleep.

If my iPad is allowed to go into "sleep" mode on its own, the connection to my Wi-Fi network is lost. Going into the iPad settings and toggling Wi-Fi off and back o n will restore the connection. I don't have to re-enter the password for the connection to be restored. This doesn't happen with any other devices on my wireless network. Any suggestions on how I can resolve this?

I was having the same problem and could only get it back either by restarting iPad, clearing the network or restarting the Router. I eventually found this useful post on the Princeton Universty website:
http://www.net.princeton.edu/apple-ios/ipad-iphoneos32-dhcp-workaround.html
It appears the problem is caused if you have any applications which uses Push notifications such as Mail, Contacts, Games Centre etc. Apparently in IOS 4.3, when the iPad goes into sleep mode it should drop the wifi connection to clear the DHCP cache. If you have notifications on, it doesn't drop the connection on sleep so when it wakes up again, either the DHCP cache entry is out of date or something else is out of step with the router.
This only happened after an abortive attempt to upgrade to IOS 5.0.1 (see https://discussions.apple.com/message/16778153#16778153) and a downgrade to IOS 4.3 which I think is where Apple introduced the Games Centre with notifications turned on by default.

Why does my iPad 3 lose the wifi connection after sleeping?, Why does my iPad 3 lose the wifi connection after sleeping?

When I am connected to the corporate network and my ipad goes to sleep, it forgets the network.... I have to reconnect manually. This only a happens at work. At home, I connect as soon as I get close to the house. How do I correct this issue?????
Thanks!!!

Thanks for the suggestions. The "Ask" switch is already off.
I am baffled because all my other devices work as expected, except my iPad. More frustrated than baffled I guess...

Security Update 2007-004 v1.1 did not fix connectivity after sleep

I installed the new security update (2007-004 v1.1) which was supposed to fix airport cards from disconnecting from their wireless network after sleep...but it didn't fix the problem. Is anyone else STILL having trouble?

I was having the same problem with connectivity after sleep, but once I used the Security Update 2007-004 v1.1 I no longer that THAT problem, but now I have another,....
in MAIL, there is definitely a 'long' pause before graphics are displayed. Or while using Safari, the text for a new page will display fairly quickly, but again there is a 'long' pause before the graphics show up. I am comparing the time before the first 2007-004 update and now. Before, the graphics downloaded fairly quickly. In the MAIL program, just clicking on an email caused the graphics to appear, in fact, they were just THERE. But now, again there is that longish pause before they appear.
Has this happened to anyone else? And ideas what I can do?
PowerBookG4 Mac OS X (10.3.9)

My iPad3 loses the 3g connection after closing the magnetic cover.

My iPad 3 loses the 3g connection after closing the magnetic cover. When the cover is opened, the iPad shows the connection is active. However, it does not connect but searches for emails etc. I have to then reboot.

have you tried disabling then reabling the 3G setting on your iPad after waking the iPad?
It may be that as it goes to sleep the iPad loses the 3G connection, you may be in a low connection area, and then has problems finding it again, this can happen occassional with WiFi.
If you go into Settings, then Mobile Data and toggle the On/Off switch Off, then On again, see if that brings it back without restarting the iPad.

Hello. My mac pro early 2008 restarts after sleep mode and it works slower. I tested it with apple hardwear test and it seems to be ok. Thank you.

Hello. My mac pro early 2008 restarts after sleep mode and it works slower. I tested it with apple hardwear test and it seems to be ok. Thank you.

Try this:
clone your system and repair it with Disk Warrior instead
Or try a clean test system install on another drive
A must: SmcFanControl 2.2 - a mere 400 rpm extra to keep air cooling up
Try to run w/o externals. MyBook included.
Is that a 7200.11 1TB? they had a lot of issues.
Run AHT off your OEM DVD.
2008 had to have EFI and SMC updates to deal with freezes on wake from sleep, and like all models, high inrush current. Hopefully you have a UPS and is 1500VA unit.
When you do hard restart from power button, you almost certainly add more directory errors and to files requiring immediate attention to repair and rebuild the directory; and to scan and repair and delete cache and temp files and folders. A must. Invest in bootable backups SuperDuper along with Disk Warrior (or TechTool Pro 6, maybe Drive Genius 3 but I'd rate that #3).
TimeMachine has its own bad habits, especially with Green drives and some externals.
Try to rule out everything and then add back one at a time.
And it may just be time to replace the 8800, very common, a couple threads this week, and it is 3 yrs old. Might want ATI 5870 or 5770.

Possible fix for OS X 10.5.7, losing connection after sleep, restart

Possible fix for OS X 10.5.7, Airport, losing connection after sleep, restart, or cold reboot.
Issue: (For OS X 10.5.7 on iMac5,1, Intel Core 2 Duo)
=============================================
- After sleep, restart, cold reboot, even though cannot connect to Internet, but the AirPort bars are still full, as if connected.
- Losing Internet connection after sleep, restart, cold reboot.
Possible Fix:
1.Open Network Preference, click on the Location drop down list > Edit Location... > click on the wheel button > Duplicate Location.
a)Select this newly setup location; Use Diagnostic button to connect to the internet. Select Network or enter WEP password if necessary.
b)Test to make sure you can connect to a web page.
c)Go to sleep & wake up.
d)This time, the Airport bar will start to show correctly. Before, it will always be full even when not connected. Now there will be no bars or grey out when not connected.
2.On the left hand side of the Network Preference Window, there is a list of services, such as Airport, build-in ethernet, built-in FireWire, bluetooth, etc.
a)Click on the wheel button on the bottom of the service list; select Set Service Order...; move Airport to the top of the list.
b)Delete any services which you are sure that you are not going to use, such as Bluetooth, etc.
3.Pick one of the locations mentioned in #1, and make it sure it is connected. If not, use Diagnostic button. If you have to select Network or enter WEP password to connect, make it so.
a)Check to make sure you can connect to a web page.
4.Go to sleep & wake up. The Airport bar should be filled up quickly. Try to connect to a web page.
5.Restart computer. Test a web page.
6.Shut down & Start computer. Test a web page.
7.When everything is working fine, you can delete the extra location that you created in step #1.
8.Click the lock on the left lower corner of the Network Preference window to safeguard the setting.

If my assessment is correct, the LIDE 200 driver is version 14.8.1 and dated 26-Sep-2008. It is possible that the driver will not work with the latest version of OSX. I would advise that you contact Canon and ask them the question.
(Removed link because of the way Flash drives the Canon site).
It is not uncommon (though irritating) that devices no longer work when an OS is upgraded. One has to ask the question if (or why) the driver was not written in such a way as to be OS version independent.
Chris
I spoke to Canon over here in Australia. Not helpful at all. In fact they were about as useful as an ashtray on on motorcycle. Having said that the tech seemed to think that there would be an update soon. But that is assuming that Canon are aware that there is a problem with that Scanner under OS X 10.5.7.
Message was edited by: 2point5

Skype 7.6 (409) Cant connect after sleep/lid-close...

Skype cannot connect after sleep or after I've closed the lid of the computer. I've tested this out and it sometimes opens up the main skype chat window however I am offline and cannot go online.
I've tried several methods;
- deleting $TMPDIR/Skype directory
- deleting my username folder from ~/Library/Application Support/Skype
- deleting ~/Library/Application Support/Skype/shared.xml
- Re-installing skype
The only solution seems to be restarting my computer so I can relogin with skype. However this is not an acceptable solution.

I couldn't find the edit button . I've succesfully found the problem causing it. However since I can't debug the skype app I am unable to find a solution as of yet.
My culprit was vagrant. Everytime I boot up a vagrant instance of a vm (which is whenever I turn on my computer) I get dropped out of skype. I've tested this as far as starting a vagrant during a skype call. The call doesnt drop (it kinda stutters) but I am logged out of skype immediately.
The things vagrant does are logged here;
==> vagrant_instance: Attempting graceful shutdown of VM...
==> vagrant_instance: Clearing any previously set forwarded ports...
==> vagrant_instance: Clearing any previously set network interfaces...
==> vagrant_instance: Preparing network interfaces based on configuration...
vagrant_instance: Adapter 1: nat
vagrant_instance: Adapter 2: hostonly
VAGRANTFILE_API_VERSION = "2"
==> vagrant_instance: Forwarding ports...
vagrant_instance: 8000 => 8001 (adapter 1)
vagrant_instance: 3306 => 3307 (adapter 1)
vagrant_instance: 27017 => 27018 (adapter 1)
vagrant_instance: 6379 => 6380 (adapter 1)
vagrant_instance: 22 => 2222 (adapter 1)
==> vagrant_instance: Booting VM...
==> vagrant_instance: Waiting for machine to boot. This may take a few minutes...
vagrant_instance: SSH address: 127.0.0.1:2222
vagrant_instance: SSH username: vagrant
vagrant_instance: SSH auth method: private key
vagrant_instance: Warning: Connection timeout. Retrying...
==> vagrant_instance: Machine booted and ready!
==> vagrant_instance: Checking for guest additions in VM...
==> vagrant_instance: Configuring and enabling network interfaces...
==> vagrant_instance: Exporting NFS shared folders...
==> vagrant_instance: Preparing to edit /etc/exports. Administrator privileges will be required...
==> vagrant_instance: Mounting NFS shared folders...
==> vagrant_instance: Machine already provisioned. Run `vagrant provision` or use the `--provision`
==> vagrant_instance: to force provisioning. Provisioners marked to run always will still run.
I suspect there is a port misalignment, however the ports I've specified should not conflict with skype afaik.

Problems auto-connecting after sleep & startup (Changed from WPA to WEP)

Okay, I know there have been several issues similar to this, but after two days of sifting through posts, I still can't resolve this.
A few days ago I switched my AirPort network security from WPA to WEP-128. This was required to allow my Nintendo DS to connect to the netwrok, by the way. After the change, two similar, but slightly different problems started:
My 15" PowerBook G4 no longer auto-connects to the network at startup. The network is listed in the drop-down, and connects with no problem when I choose it manually. The computer seems to have no problem re-connecting after waking from sleep, which is odd because...
My other PowerBook, a 12" G4, won't auto-connect at startup AND won't re-connect after sleep. As above, it has no problem connecting using the Keychain once the network is selected from the drop-down.
So far I have tried, on both machines:
- trashing the system airport prefs
- deleting and resetting the network's keychain entry
- repairing the keychain (no errors found)
- turning off some unneeded power mgt options
- disconnecting USB peripherals
I have also reloaded the software on both my AirPort Extreme base and my AirPort Express hub, as well as restarting both hubs. I've also made sure that AirPort is at the top of the network connection list.
Both laptops are running 10.4.3 and have all the latest software updates installed.
What am I missing?
Thanks.

Both of these replies are helpful, in that they help confirm something I figured out this morning, almost accidentally.
One thing I didn't mention was that during the change from WPA to WEP I changed the network password. Now, I assumed that since the Keychain seemed to be working and I could get on the network manually without needing to enter the password each time, that meant the new password had correctly propagated throughout the system.
So, this morning I go into the Network settings, switch from Automatic to Preferred, select my network, look at the properties, and notice that somehow it has way too many bullets for that to be the correct password. I re-entered the password and that seems to have solved the problem. The new password I had entered somehow didn't make it into this setting. I guess trashing the network prefs, or renaming the network would have had the same effect.

My mac not recognize wi-fi after sleep mode ?

my mac not recognize wi-fi after sleep mode ?

Try this when it wakes...
Instead of joining it from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.

Mac mini loses mouse and keyboard after sleep.

Hi Everyone:
I recently bought my Mom one of the new Mac mini (I'm a PowerBook user myself), and she's running into some puzzling problems which, while minor, are sufficiently annoying as to confuse poor old Mom.
The system egnrally runs fine after you turn it on, until it goes to sleep. After some undefined period in sleep mode, the Mac mini appears to "lose" the USB keyboard and mouse which is plugged into it. If you press a mouse button or a keyboard key a few minutes within the system going to sleep, the system will wake up and both will work. If you wait a longer period of time (say, 20 minutes or longer, although I haven't sat and timed it at all), pressing any key or mouse button does nothing, and you have to wake it from sleep by using the power button. Once awake, the keyboard and mouse do nothing. The only way to get them back is to unplug both of them (the mouse is chained through the keyboard as the other Mac mini USB slot is used by Mom's UPS), and plug them back in so the Mac mini can re-detect them on the bus, after which everything is happy again until the system has been asleep for too long.
Has anyone experienced this? Both the mouse and keyboard are genuine IBM (as in: made by International Business Machines), although are several years old (I bought them when I worked for IBM, and IIRC they were amongst the first models of USB keyboards and mice that IBM offered, if not the first).
In the interm, I've lent Mom my Apple Bluetooth mouse and keyboard, which has (as you would expect) worked flawlessly. This problem may "solve" itself -- I'm hoping to take Mom out later this week to buy her own Apple Bluetooth mouse and keyboard at the Apple Store.
The other problem, however, isn't as easy (or necessarily as cheap) to fix. Again after the system has been asleep for some time, it often (but not always) changing the resolution of the monitor when it wakes up. I have the mini set to use a reasonable 1024*768, but sometimes when it awakes it will suddenly be set to 800*600 or 832*624. Sure, you can change it back, but that's major surgury for Mom (and I'm moving cross-country next week, and won't be able to just "drop by" to fix system problems). The monitor is an Ambra SVGA model (Ambra was a brand-name of inexpensive PCs that IBM sold some years ago), and never had any such problems on her last (Intel-based) system the mini is replacing.
The whole purpose of the Mac mini is to "bring your own" Keyboard, Mouse, and Monitor -- but in our case the keyboard and mouse don't work at all after sleep, and the monitors resolution gets dynamically changed after sleep. Has anyone else encountered this situations, or any solutions? TIA!
Brad BARCLAY

Hey Jan:
I've seen quite a few posts in this regard with non-Apple mice and keyboard.
Well, the mouse and keyboard are quite old -- it could be that they're having a problem dealing with identifying themselves on the USB bus during sleep, or aren't identifying themselves fast enough at wake time. I'll just have to replace them I guess.
I've never seen a sleep resolution switching problem except on a VGA adapter to DVI connection to an old tube monitor.
Well, this is a pretty vanilla CRT monitor circa about 1999, so yeah -- it could once again be an age issue, and the fact that there is a DVI -> VGA adapter involved in the middle.
For worrying about fixing Mom's Mac, setup her remote VNC software (Apple Remote Desktop Client) and use the free Chicken of the VNC admin program.
I am quite familiar with VNC. As much admin as possible will be done by SSH, but I will have VNC in place before I leave. The big problem is going to be the fact that I'm going to be several timezones (and over 4000 km) away, so I won't necessarily be available at a moments notice to help her with this sort of thing.
The CRT issue we might just have to deal with by having her always run it at 800*600 (I don't think she'd really notice the difference, and as her eyes aren't what they once used to be, the slight size increase may be more confortable for her in the long run) until such time they she can afford to buy a nicer display (I did my duty as a son buying her the Mac mini and an iSight camera -- she has to take care of the rest ).
Yaz.

T440s in Windows 7 Pro loses Wifi connection after sleep 7260AC

Hi guys,
I keep having issues waking up from sleep with my T440s. It WILL NOT connect to wifi and the wireless adapter under windows adapter settings disappears. Only thing that fixes this is a reboot. I have removed "allow windows to turn this device off" under wireless settings.
Driver: 17.12.0.4
Dated: 28/08/2014
Software: Lenovo Access Connections
I do not use windows to connect to WIFI. I have dedicated profiles for each of my wifi networks at home and work.
This is a serious productivity killer.
Any help would be appreciated.
Thanks!
Solved!
Go to Solution.

This is a well-known issue with the AC card. Go take a look at the Intel forum.
You don't necessarily have to reboot to get the card back. Right click it in Device Manager and then disable/enable. It will come back online.
Some tips that have worked for many:
-DO enable the power saving setting. If I disable it on my T440p, the card is offline upon wakeup.
-Ditch ProSet and let Windows manage your wifi. Profiles might be convenient, but...
-Ad Hoc QoS - WMM enabled. Enable it on your router(s), too.
-Ht Mode - VHT
-U-APSD support - this one can go either way. Some leave it on and don't have an issue. Some have to disable it to have the card work after sleep. You have to play with it.
And, I really believe that the router/modem type can make a difference, too. Some just don't work right with this card no matter what you tweak on the card. With this card, I think an AC router/modem is the way to go.
Another thing is the driver itself. I had wake issues when I first got this ThinkPad about 10 months ago. Then, Intel released v 16.6 and that one fixed it. I've tried all of the 17s released since and all of them caused sporadic failures to wake. So, I have always rolled back to 16.6 and it always wakes.
Note this: If you use Lenovo Update, it won't create a restore point in Windows so your "Roll Back Driver" button might be greyed out in DM. Always manually create a restore point before you update a driver. And, if it's working, whatever it is, leave it alone. If the release notes don't address an issue you're having, skip it.
Driver updating is way oversold here and elsewhere. If you're determined to update anyway, at least don't be an early adopter. Let other peeps do it first and then come back here and see about the complaints! Also, you can download the driver at Intel in their Administrators sets of drivers. Bare drivers and no software overhead.
Good luck.

Apple TV loses connection after sleeping

My Apple TV had virtually no problems with a connection when being used, but has this curious quirk of losing it's connection after an extended sleep period. It seems as if it sleeps for more than 8 hours, it will no longer be connected to my network. Viewing the settings for the Apple TV, it shows that my connection should be working and has full strength, but doing a test results in nothing happening. My options are restart or drop connection and input my network password again. This gets really annnoying, because almost everytime I want to use it, I have to do either of those things first. Are there any internet settings I can chnage so that this stops happening?

Actually same goes for the iPhone after charging it when I sleep, next day, have to turn wifi on and off to get the connection to work properly.

Upgraded to lion now my wi-fi loses connection after sleep mode, it still shows as connected but does not go out to the internet. Please help

After I upgraded to lion I have been having constant issue with my wi-fi after sleep mode. I close the lid and when I reopen I open safari and cannot connect to the internet. Wi-fi is on and I am connected to my router, but it doesnt seem to be on the internet. Now how I resolve this issue is turn of the wi-fi and turning it back on, then i am back on the net. this is mos-def a bug i have never had that problem with snow leopard. Please assist or provide hot-fix

I have the same issue and have to cycle the wireless modem on the laptop. Doesn't matter if I'm on a preferred netowrk or no, or if I stay on the same network or move. I come out of sleep, I have to cycle the modem.
It's not life threatening, or anything, but it's a hassle. I didn't have the issue with Snow Leopard.

Lost Airport Connection after sleep/shutdown

Hi there,
I have spent a goodly part of this weekend trying to solve this problem, the time has now come to seek assistance from someone who might know what they are doing!
I have an Airport Extreme Base Station, it is connected to an ADSL ethernet router and then to the ADSL phone line. My G5 connects directly to the router via ethernet. My G3 iBook has an airport card and, sometimes anyway, connects to the internet via the base station.
The problem I have been having is that whenever the iBook goes to sleep it loses its Airport connection and to get it back again takes forever switching Airport on and off, going into Internet connect, changing around the TCP/IP settings etc. I eventually get the connection back (with the original settings), but it's becoming a real pain. The same thing happens after a restart or shutdown, it doesn't automatically connect to Airport and takes forever to get it to. A lot of the time the Base Station doesn't show up as an available network, then all of a sudden it will after various tweakings.
I have checked the airport card and it is positioned correctly. The fact that it occassionally recognises the Base Station makes me think also that the card is OK. So my question is, how can I keep the darn thing connected? I feel there is something simple I am missing.
Incidently, this began happening after I had set it up to print through the Base Station, that only worked for a short period of time. I have since get rid of all those settings.
Hope I have given enough information.
Cheers
NikkiG

Hi NikkiG,
You may want to look at these first...
Changing the priority of your network connections
Knowledge Base Document #106653 on Using network locations in Mac OS X
Knowledge Base Document #106858, which is The Airport Troubleshooting Guide
Connecting to the Internet using AirPort
Have you the default network (preferred) to the AP Extreme?
Jon
Mac Mini 1.42Ghz, iPod (All), Airport (Graphite & Express), G4 1.33Ghz iBook, G4 iMac 1Ghz, G3 500Mhz, iBook iMac 233Mhz, eMate, Power Mac 5400 LC, PowerBook 540c, Macintosh 128K, Apple //e, Apple //, and some more... Mac OS X (10.4.5) Moto Razr, iLife '06, SmartDisk 160Gb, Apple BT Mouse, Sight..

Mac loses wi-fi connection after sleep

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