Loose network connection after sleep

Everytime my macbook pro sleeps it looses network connections in my home and I have to go through re-establishing connection including network password

This seems to be a common issue on most Mac platforms lately. I have 2 Macbook Pro's and 1 Air all experiencing this issue. It only happens on hidden networks, at least in my case and most I have read. I have yet to hear any official response from Apple but there must be at least 15 threads on this exact topic thoughout the forums.
Some people claim removing all the "Remembered" networks and re-add them fixes it. I have noticed the only thing that seems to work is if I remove all networks and if I have a hidden network, it can be the only one listed. As soon as I add another saved network hidden or not, the problem comes back.
This is hard since most of the end users that use the macbooks on our hidden networks also use them at home. So they naturally have multiple networks listed. The odd thing is its not ALL of them. We have a bunch of other Mac's that do not experience this issue.
I know this is not a solution but it is what I have found so far...

Similar Messages

Lose network connection after sleep on iMac but not MacBook

The subject line says it all:
I installed an Airport Express card on my old Rev A iMac when I got my new MacBook and an Airport Extreme Base Station.
The MacBook can go to sleep and, when I "wake" it up, it's ready to go.
After the iMac goes to sleep, its network connection is lost and I have to log back in.
Any way to fix this so the iMac stays logged in?

Haven't received a response but didn't want this hanging out there unresolved. Posted same question to Airport forum in hopes of a response there and marking this "answered."

2008 r2 hyper-v guest with static IP always looses network connectivity after every restart - no problem with DHCP

Hello,
We are running 2008 R2 domain with one physical DC and other running in VM on Hyper-V host (2008 R2 Standard). The host has 4 NICs and is configured to use one physical NIC for itself (management) and the hyper-v guest is configured to use another dedicated/physical
NIC (through microsoft virtual switch) just for itself.
I noticed that after setting the hyper-v guest with a static IP address all works fine only until guest restart. When the guest boots up the IP address is still configured correctly in IPv4 properties, but there is no network connectivity at all and in fact
the guest shows running APIPA config in ipconfig /all output. That situation continues until I remove the virtual NIC from hyper-v guest, remove the virtual switch from dedicated NIC on host and then reconfigure it (using same settings as they were). very
annoying.
For time being I switched the virtual DC (problematic hyper-v guest) to a DHCP IP and configured DHCP server (running on physical DC machine, not on hyper-v host) to store a reservation for the hyper-v guest so it always gets the same "static"
IP configuration.
Is there some kind of a problem/bug with using static IP on (2008 R2) hyper-v guests? is there a hotfix for static IP config in hyper-v guest environment?
both 2008 R2 OSes (host and guest) are up to date with all updates (synced with Microsoft, not WSUS).

OK, I'm not at the office now, but took my time to test out the restart scenarios on problematic virtual guest remotely.
No dice, same as it was, everything works fine after guest has IP configured in DHCP mode (IP reservation of 192.168.1.5 for specific MAC address) and it doesn't work after restart in static IP mode (same address, works before restart of guest).
I also took "arp -a" outputs at each step from host server and that was always saying there is only a single host (192.168.1.5 = VDC = problematic virtual guest) assigned to that IP address and always with same MAC, so that pretty much rules out
ARP/MAC troubles and no issues with switches/routers getting spoofed. Problem is most likely with the virtual guest (WS2008R2) or within the host running same OS.
Here are outputs:
A) VDC has IP configured in DHCP mode - always same, survives through restart (all works)
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : CD.lan
Description . . . . . . . . . . . : Microsoft Virtual Machine Bus Network Adapter
Physical Address. . . . . . . . . : 00-15-5D-01-D3-00
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b9af:6679:3142:8799%13(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.5(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Thursday, January 30, 2014 5:34:48 PM
Lease Expires . . . . . . . . . . : Friday, February 07, 2014 5:35:26 PM
Default Gateway . . . . . . . . . : 192.168.1.254
DHCP Server . . . . . . . . . . . : 192.168.4.5
DHCPv6 IAID . . . . . . . . . . . : 268440925
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-6F-5F-C2-00-15-5D-01-D3-00
DNS Servers . . . . . . . . . . . : 192.168.1.5
192.168.4.5
NetBIOS over Tcpip. . . . . . . . : Enabled
ARP -a output from host server at that time:
Interface: 192.168.1.4 --- 0xc
Internet Address Physical Address Type
192.168.1.5 00-15-5d-01-d3-00 dynamic
B) VDC has IP configured in static mode - BEFORE RESTART (all works)
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual Machine Bus Network Adapter
Physical Address. . . . . . . . . : 00-15-5D-01-D3-00
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b9af:6679:3142:8799%13(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.5(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.254
DHCPv6 IAID . . . . . . . . . . . : 268440925
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-6F-5F-C2-00-15-5D-01-D3-00
DNS Servers . . . . . . . . . . . : 192.168.1.5
192.168.4.5
NetBIOS over Tcpip. . . . . . . . : Enabled
ARP -a output from host server at that time:
Interface: 192.168.1.4 --- 0xc
Internet Address Physical Address Type
192.168.1.5 00-15-5d-01-d3-00 dynamic
C) VDC has the same IP configured in static mode - AFTER RESTART (no more network connectivity at all, LAN in Public zone)
Windows IP Configuration
Host Name . . . . . . . . . . . . : VDC
Primary Dns Suffix . . . . . . . : CD.lan
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : CD.lan
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual Machine Bus Network Adapter
Physical Address. . . . . . . . . : 00-15-5D-01-D3-00
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b9af:6679:3142:8799%13(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.135.153(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 192.168.1.254
DHCPv6 IAID . . . . . . . . . . . : 268440925
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-6F-5F-C2-00-15-5D-01-D3-00
DNS Servers . . . . . . . . . . . : 192.168.1.5
192.168.4.5
NetBIOS over Tcpip. . . . . . . . : Enabled
ARP -a output from host server at that time:
Interface: 192.168.1.4 --- 0xc
Internet Address Physical Address Type
192.168.1.5 00-15-5d-01-d3-00 dynamic
Throughout the testing, the hyper-v host IP configuration and IPconfig output was always staying same.
The Network Connection #2 is the only one the host uses (not shared with hyper-v guests).
The Network Connection #4 is assigned to Microsoft Virtual Switch hence why it doesn't show up in results, like below:
Windows IP Configuration
Host Name . . . . . . . . . . . . : HYPER-V
Primary Dns Suffix . . . . . . . : CD.lan
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : CD.lan
Ethernet adapter Local Area Connection 3:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP Ethernet 1Gb 4-port 331i Adapter #3
Physical Address. . . . . . . . . : 9C-8E-99-52-15-91
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP Ethernet 1Gb 4-port 331i Adapter #2
Physical Address. . . . . . . . . : 9C-8E-99-52-15-90
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::dc78:8a3b:38a5:7af3%12(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.4(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.254
DHCPv6 IAID . . . . . . . . . . . : 312250009
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-67-52-8F-9C-8E-99-52-15-93
DNS Servers . . . . . . . . . . . : 192.168.4.5
192.168.1.5
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP Ethernet 1Gb 4-port 331i Adapter
Physical Address. . . . . . . . . : 9C-8E-99-52-15-93
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
On Monday I will install more test guests in Hyper-V host (WS2008R2), in variety of flavors like 7x64, 8.1x64, ws2012r2, and see if they show similar problems with static IP configuration when utilizing a dedicated NIC from host server.
Don't get me wrong, I can live with virtual DC running on DHCP IP reservation (which is based on MAC), because the virtual DC pretty much requires a physical PDC (hosting also DHCP in my network) to be present for safety reasons ... however I prefer a static
IP configuration on all servers, hence my question and surprise why it doesn't work.

Every Apple apps using Sandbox is loosing network connectivity after some time.

Its strange, but after a while using application, application stop working. For example Mail.app. Its working fine for 5 minutes, but after that it stopped working. When Mail.app crash, I am not able to use Safari or connect via iTunes to App store.
I already tried:
- uninstall non Apple software
- fixing permissions on startup disk
- check filesystem of startup disk
- reinstall Lion
- update to 10.7.1
Unfortunately nothing from this was working. Before upgrading to 10.7.1 I found out, that Lion was not able to connect to mixed up b+g wifi network. After changing to g only wifi network, it was working fine.
Thanks for the help.

Its strange, but after a while using application, application stop working. For example Mail.app. Its working fine for 5 minutes, but after that it stopped working. When Mail.app crash, I am not able to use Safari or connect via iTunes to App store.
I already tried:
- uninstall non Apple software
- fixing permissions on startup disk
- check filesystem of startup disk
- reinstall Lion
- update to 10.7.1
Unfortunately nothing from this was working. Before upgrading to 10.7.1 I found out, that Lion was not able to connect to mixed up b+g wifi network. After changing to g only wifi network, it was working fine.
Thanks for the help.

RIO looses network connectivity after format disk

Hello all,
I have two 9014 cRIOs that I performed a format disk on after some trouble shooting activites. Now I can not connect to either of them. Each is acting slightly different. I chose to reset the network adapter to its factory default settings during the disk format.
RIO A - After format disk, the RIO will power up and show up as a unit in MAX. However, very shortly after coming onlilne, the #3 LED starts blinking orange twice. After this point I can't communicate with it. Sometimes, it will remain online on MAX, sometimes it will drop there after. When it does stay online, it doesn't allow me to run the formate disk again, load software, run the RAD utility, ... nothing.
RIO B - After format disk, the RIO is not found in MAX at all. #3 LED shows solid orange for about 4-5 minutes straight. After that, it seems that it attempts a reboot, and again imediately go to solid orange.
I've tried booting into safe mode, and resetting IP address. Nothing is letting me in at this point. Also, both were performed while wired into the eithernet port and the formate disk activity completely finished, so I don't see how anything could have been interupted in mid process. Is there anything else I can do at this point? I appreciate any help.

Hello AMP12
How are you connecting the cRIO to the computer trough a router or directly to the computer with at crossover cable?
Have you tried to add the cRIO to MAX with the default IP address when it is reset? The IP address should be 0.0.0.0 according to the manual page 9 and 12.
Last but not the least we could check the IP address that the cRIO currently has with the console out port. Here is a link that explains how to do this.
Regards
Esteban R.

Mac Mini Late 2012 OS X 10.9.4 loosing network connectivity

I haven't found the exact issue on the forums nor outside it so I'm creating a new thread.
My Late 2012 Mini started loosing network connectivity after upgrading to 10.9.4, both WiFi and Ethernet.
Sometimes it takes around 5 minutes, sometimes more than 30 but the connectivity gets disrupted continuously, the packets stop going in or out for around 30 seconds. I've done PRAM and SMC resets, I've changed network locations, nothing helps and I've found nothing interesting in the system logs.
Also I can't login to the Apple bugtracker due to some error so I'm reporting it here.
The only USB devices i have connected are keyboard and mouse.
Any help will be appreciated.
Mac Mini Late 2012 i5
OS X 10.9.4 Mavericks

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

My Mac Pro loses network connection after wake from sleep since Yosemite upgrade.

Mac Pro loses network connection after wake from sleep since Yosemite upgrade. Any one have this issue as well. And is there a work around?

Wi-Fi?
Wi-FI connection drops
Wi-Fi Problems in OS X Yosemite
Wi-Fi Problems in OS X Yosemite (2)
Wireless Diagnostics
Also try turning off Bluetooth.
Troubleshooting Wi-Fi issues in OS X
Wireless Connection Problems - Fix
Wireless Connection Problems - Fix (2)
Wireless Connection Problems - Fix (3)
Wireless Connection Problems - Fix (4)

I loose my home network connectivity after my iMac is awaken. This began after I upgraded to Lion. Is there a fix to this problem?

I loose my home network connectivity after my iMac is awaken. This began after I upgraded to Lion. Is there a fix to this problem?

see if this article helps: http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/?utm_source=feed burner&utm_medium=feed&utm_campaign=Feed%3A+osxdaily+%28OS+X+Daily%29&utm_conten t=FaceBook

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

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)

I have serious problems with I OS 6 - I am loosing internet connection after a few seconds or minutes. What can I do? Can I come back IO S 5.1.1.?

I am experiencing serious problems after downloading iOS 6. I am loosing my connection after a few seconds/minutes. What can I do? Can you come back to 5.1.1.? How can I do that?

You can't downgrade the iOS.
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

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.

Airport after 10.4.2 Will Not Connect after Sleep

After my iBook G4 goes to sleep it will not reconnect to the internet.
It shows connection.
It shows me the IP.
It will not allow me to do anything online.
I have to quit all internet prorams mail, safari, firefox etc...
Then I have to reset the location over and over and try until it works. Sometimes right off the bat sometimes it takes 10 minutes. This is completely frustrating since even the network diagnostic is showing internet, ISP, etc.
I've rebuilt my keychain.
I've rebuilt the WEP password
I've changed my computer name to be one word no spaces.
I need help! My wife cannot use this computer if it won't connect without interaction. I never had this issue before 10.4.2 was installed.

Henry,
Thank your for the helpful link.
I created a new location based on the info in the link you provided.
It worked.
Now, the iMac G5 rejoins the network automatically after sleep or restart.
I don't know if level 4's need point, you and Frank C. (author of the info at http://discussions.info.apple.com/webx/.68ae4ead) just got some more from me.
mjc

ATV looses network connection if PC reboots or iTunes closes and reopens.

ATV looses network connection upon iTunes closing (i.e computer turning off or going to sleep.) I'm then required to re-input the network password (p.i.t.a.) every time I come home from work, or the power surges, or iTunes closes, etc.
Thoughts?

Hi Lucy,
To address the suggestions you made:
There's too much code, performance needs to be
improved. - Does anybody know of useful utilities to monitor cpu
performance as a sort of watch dog.
There is a software package called the Execution Trace Toolkit you can use to monitor the performance of your Real Time applications. If you have access to this software through a developer suite or a site license it would be worth installing that.
If not there are a number of other things you can try first.
The network or vi server is shutting down - Again, I'd appreciate some help on how to monitor this.
To determine if the problem is caused by the network you should connect to the cRIO with a cross over cable and see if you see the same behaviour. This will help determine if the problem is down to the network or the cRIO system.
Once you've isolated the source of the problem (ie the crio or the network) we can investigate the cause and hopefully come up with a resolution.
Kind regards
Sarah
Applications Engineer | National Instruments | UK & Ireland

Loose network connection after sleep

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