After Lion upgrade, having network issues after wake from sleep

I will check when I get home. It goes to sleep automatically at 2am. So it will have been asleep for quite a while.

I'll also put it to sleep a few more times with varying times. That is of course if I don't have a problem after waking it up when I get home. Either way I'll let everyone know.

I did not have it off for 2 minutes the times that I checked, more like 30 seconds.

13"Aluminum MacBook just upgraded to 10.7 having the same issue. if I run the diagnosticthat Safari suggest it tells me my internet appears to working properly then Ican pull pages again ....

Having the same problem here, iMac using a netgear wireless router. Turn wireless off and back on then it connects...

Is everyone able to regain connectivity by disconnecting and connecting wireless? If yes then those people are having a different issue than i am. Again, I'm using wired (gigabit) ethernet and I am having this issue. Unplugging the network cable and plugging it back in doesn't help. The only remedy I've found is rebooting, but as a I also said at least Mail and Adium always begin to hang upon loss of connectivity. So I then have to force quit them to shutdown.

I really don't want to downgrade...

Russo017: I am also using wired (GigaBit). My wireless is normally turned off. When the issue occurs, if I enable wireless, allow it to connect to my home Wifi then turn it off again this seems to resolve the issue (or at least it has on the two occassions so far when I have been able to test it). I would slso note that, for me at least, this issue does not occur on every wake from sleep but only maybe 1 in 10 times (that's approximate).

@ChrisJenkins

ChrisJenkins wrote:

I just logged a formal bug on this via bugreport.apple.com. The Bug ID is 9834032.

Let's hope we see some action from Apple to fix this. It is beyond annoying.

Is there any way we can view this bug? Did you link this thread?

@Russo017

I don't know if bugs are publicly visible. I did link this thread in the bug report.

You'll also need to follow up with the precise router model, firmware level and hardware revision you're experiencing these issues with.

I've been using four different machines myself, and none of them nor any of the Macs at my local Apple Store experience this problem.

I wouldn't be surprised to find it was actually a bug on the router's behalf, given it's by no means a universal issue.

Note also all of my systems have Broadcom Wi-Fi chips in them, so it might be interesting to know whether this is an Atheros-specific issue (click on the "Wi-Fi" line under "Network" in System Profiler's "System Report…" window to find out which chipset you have.)

With Snow Leopard I was getting maybe a 1-3 in 10 chance of failed wake on sleep. With Lion I am getting 9 out of 10 ... (added) with SL it was much easier to regain the internet connection by re-sleeping the machine and re-awakening. With Lion I have to change the network location in system preferences from Home to Automatic and back again or reboot the computer.

I am also using wired ethernet connection, with wireless and bluetooth turned off.

Apple engineer has written to me for more details and I'm typing out a lengthy email with my details, I've also mentioned that others are using wireless connections and getting same issue as wired connections. He's asking for all sorts of system info files.

So, the good news is Apple is taking it serious and working on a fix. If anyone gets contacted, give them the info asap and we will get this fixed sooner rather than later!

It would be interesting to see hardware/software configurations from people who don't get this problem at all ... but I guess they won't be reading this thread ...

Hard to see how it could be a router issue. I am using (CAT6) wired connection to an IT grade 24-port managed GigaBit switch and the issue even manifests itself for internal connectivity that does not touch my router. No other device on my home network (and ther are many) is having any issues. It's a Lion bug. Just because it doesn't affect everyone doesn't mean it isn't an O/S bug.

I am having the same problems as everybody else with my desktop iMac and my MacBook after upgrading to Lion. I have 2 Airport Expresses, an Airport Extreme plus Time Machine. At first I thought a fault had developed with the Time Machine but the problem is still there when the Time Machine is disconnected. Sometimes the iMac goes into a repetitive cycle of completely switching off on it's own then back on again, then off again. If not stopped this can go on some time. A temporary solution is to switch off at the mains, not using the power button, wait a few seconds then switch on. Am ok for awhile then it happens again. Yesterday it worked fine all day. Today it won't. Sometimes it wants to keep configuring the Airports even though I have checked them and ensured they are up to date.

My son in Australia has the same problem.

There is clearly a fault in Lion causing this. Come on Apple get it sorted. For some they will have no Internet access until it's fixed.

That doesn't mean it's a Lion bug; for example it could be a bug with your DHCP server, if you use one.

I've got a Mac Pro connected via wired Ethernet and a MacBook Pro connected via Wi-Fi that do not experience this problem, nor do quite a few Macs at work connected via a combination of Wi-Fi and wired connections.

Do your systems get their addresses via DHCP or are they set statically?

Also, define "no Internet."

Do you mean no physical network connection (e.g. the Wi-Fi "fan" icon is grey or your Ethernet hub or switch shows no connection), that Internet access fails, or that it stalls?

I could see cases where Time Machine for example is so saturating the network with traffic that Internet access requests are delayed until after the Time Machine traffic has been processed.

@William, I'm a sysadmin and network engineer. Trust me its not the network, its the MBP... I've tried multiple networks and i get this everywhere.

William it is most defently a Lion bug. The following "statement" is only regarding the "no network after sleep" - bug.

I have been doing serious testings for a week now on multiple apple systems (iMac's 2007>2011 and Macbook Air late 2010 models).

Beside this thread there's a lot of other suggestions to the solution. Let me give you a few updates, so we can line them up.

DHCP or Static IP - No change, still no network after sleep.

Order of network services (wifi at top, wired lan at top incl. various other positions) - No change, still no network after sleep.

Disabling SMB and/or AFP and enabling them again - No change, still no network after sleep.

But what DID work, was all related to external devices, hooked up on either USB or FireWire. Once you detach eg. an USB harddisk or FireWire harddisk (I'm guessing other devices will do), the network will work instantly after sleep. Once you hook the devices back and sleep > wake, the network is out again. This testing was done many times and it's a 100% sure thing.

So why the external devices seems to block the network for "waking up" is a mystery for me.

Strange as neither I nor quite frankly anyone I know other than those here has encountered this, and we encompass well more than 250 machines on about as wide a variety of networks as you could imagine.

Note that at least two of those machines were booted from external drives for most of their lives, and many of them have, for example, their iTunes libraries on an external FW drive.

I'm not dismissing your issue in any way, just providing more data points.