Ethernet proxy unable to connect after sleep

Late 08' Macbook Pro. OSX Lion.
I live at university so I have to connect to the internet through an ethernet cable and a proxy. Usually all I need to do is open my broswer, it will ask me to type in my username and password then I'll be all set.
Ever since yesterday however, I am starting to have trouble connecting to the internet. I left my computer on sleep the night before (at the login screen, immediately after a restart). Yesterday morning when I tried to get on the internet, all I get is a time out connection error. After restarting my computer numerous times and ran the network dianogstic, nothing seems to work. Eventually it just fixed itself after a while.
After restarting my computer today, I found myself unable to connect to the internet. I have tried everything again, restarting my computer a dozen of times. But I still can't get a connection. I can't even connect to the local network.
I am 100% it has nothing to do with my university network, because I booted my MBP with Windows on Bootcamp and my internet worked perfectly. I have never had a problem like this when I was on Leopard/Snow Leopard. I read there is a lot of Wi-fi connectivity issue since Lion upgrade, maybe this is the same problem?
Is this a known issue? Is there a way to fix it?
(ps. I am currently on my iPhone 3G hotspot. It's working perfectly.)

I have found part of the problem. Everytime Lion wakes up from sleep, it screws up the address for the DNS server. I figured I had to delete all my network locations and add them back in which forces the OS to renew the DNS server address. It doesn't work everytime, but if I do it a few times it eventually works.

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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.
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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.
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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.
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vagrant_instance: Adapter 1: nat
vagrant_instance: Adapter 2: hostonly
VAGRANTFILE_API_VERSION = "2"
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vagrant_instance: 8000 => 8001 (adapter 1)
vagrant_instance: 3306 => 3307 (adapter 1)
vagrant_instance: 27017 => 27018 (adapter 1)
vagrant_instance: 6379 => 6380 (adapter 1)
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vagrant_instance: SSH username: vagrant
vagrant_instance: SSH auth method: private key
vagrant_instance: Warning: Connection timeout. Retrying...
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==> vagrant_instance: Checking for guest additions in VM...
==> vagrant_instance: Configuring and enabling network interfaces...
==> vagrant_instance: Exporting NFS shared folders...
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==> vagrant_instance: Mounting NFS shared folders...
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On Mac - Android File Transfer stopped working.   It says Unable to connect after installing the Verizon Software Update Utility from phone.

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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.
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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?
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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.

WLan fails to connect after sleep mode - Satellite T110-10x

Hi,
Everything works fine, wireless connected.
After sleep mode - it fails to connect although it detects my wireless network.
I've tried the latest Realtek driver, still no good.
I've verified that my setup is not to turn down wireless in the power options.
Any idea?

Hi
Where did you find the latest WLan driver?
Here on this Toshiba driver page you can find the latest Wlan driver:
http://aps2.toshiba-tro.de/wlan/
I recommend uninstalling firstly the old driver and then to install the newer version.
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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:
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-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.

Mac loses wi-fi connection after sleep

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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
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I would certainly use all SMB naming. Mavericks now uses SMB network protocol by default.
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No spaces and pure alphanumeric.
Use only WPA2 Personal security with a 10-20 character purely alphanumeric password.
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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.

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Dear all
maybe it is the same issue, but since the latest updates I am receiving this message:
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I am getting this same error after the update. I can use RDP from a windows machine to remote in to my work PC but the RDP on the mac just gets this error

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I have downloaded Firefox for the First time, Firefox can not connect to any website (Unable to COnnect), but IE can. I have followed all the directions on the page for firefox can not load when other programs can (Firefox connection settings,IPv6,DNS Prefetching, firewall settings)
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Every time Firefox opened
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No wifi re-connect after sleep - It's caused by Bluetooth!

After upgrading to 10.5.3 my Air would no longer connect to my wifi network after sleep.
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After much testing......
Turn Bluetooth off, problem gone. My Air reconnects to my network after wake.
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Can anybody else confirm....
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Hello,
I have been having a large amount of problems on my MacBook (Tiger) when trying to re-connect to wifi after sleep (lid and button), to the point where using prefs>network, I couldn't even connect. I could sometimes get it to reconnect with a full reboot but the was intermittent - my issue was predominately on N (which I use a lot) although G was very flaky with a lot of connection dropping also.
Have tried everything, went to the Mac Store and had a new logic board and Wifi card
Upon returning from the MacStore the sleep issue was still a problem and having read this post, I played around with my bluetooth and found that after sleep it started to reconnect again intermittently in either Off, On (not discoverable) and On (Discoverable). I then by chance realised my wireless keyboard was in the cupboard close by. I turned it off and reconnected it and it seems to have cured my problem. I have yet to try with keyboard on but in the past when it has been in permanent use I have never had an issue. So try resetting your bluetooth and your mice and keyboard and doing a full reconnect.
Message was edited by: Chav

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?

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Dear Sriram,
Can you do this and check it
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http://help.sap.com/saphelp_nw04/helpdata/en/86/58cd3b11571962e10000000a11402f/frameset.htm
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Wifi needs up to 30 sec. to connect after sleep

The title exactly describes the problem. The wifi connection of my MAC book pro (late 2013) will take up to 30 seconds to connect to my WLAN after sleep. Maybe it is a problem since Yosemite but I don´t know exactly. Does anybody has the same problem or maybe a solution?
Regards, Lidira

There are many factors in startup time. The first time you create the engine there should be a short delay as lots of things are going on, dlls are loaded, global variables and configuration files are loaded and internal data structures are created. When Start() is called, additionally the loginlogout callback might be launched. 20-30 seconds does seem a bit long though for any modern machine (I'd expect more on the order of 2-5 seconds on a reasonably fast computer for creating the engine) so something else might be going on in your system. Do you perhaps have a lot of global variables, are a lot of VIs being loaded by the loginlogout callback perhaps and perhaps being mass compiled by labview? Is your login callback perhaps hanging on an instrument driver call until a timeout occurs? There are many many possibilities. Have you tried launching a UI or seqedit.exe on a clean install of teststand on that machine? If so how long does that take? If it's much faster than 20 - 30s, then the extra time must be due to customizations you have made. If so, try systematically removing or commenting out customizations to narrow down where the problem is. If on a clean install of teststand it still always takes 20-30seconds to create the engine, then there might be something unusual about your machine that will need to be narrowed down (assuming it isn't just an usually old or slow computer). Have you seen this significant a slowdown on all of your machines or only on certain ones?
Also keep in mind that the OS does lots of caching of things, so the first time dlls are loaded is often much slower that subsequent times.
Also keep in mind that .NET applications startup slower than non-.NET application (especially the first time one is launched after rebooting) as there is a significant amount of overhead involved. This is something Microsoft has been working on improving for future versions of the .NET framework.
Hope this helps,
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Ethernet proxy unable to connect after sleep

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