Q: Lion WiFi Connection Problem

Hello Lupunus,

thank you but I tried all the hints to no result. At this moment this specific configuration is simply not working. Point.

Uby

Uby wrote:

 

Hello Lupunus,

 

thank you but I tried all the hints to no result.

That's the point. Point.

You tried hints here and hints there and a tweak here and a top tip here. Thats like poking with a stick in the fog as a blind in the woods, trying to find a specific tree.

Take one step back and look on your entire network, its infrastructure and configuration.

Than collect all information you think they could be useful and open your own question.

That may help you to go with the troubleshoot step by step thru the things until the source of your problem is identified and a solution can take place.

Sorry but I cannot understand your point of view.

If things don't work properly like they should it's normal to try several workarond to check if it is possible to solve in some way the problem.

The network is pretty simple, a router distributing dynamically the IP with DHCP.

It seems you are convinced that the problem is in the network or in the infrastructure... why ???

All the other devices (several iphones, ipad, pc, ps3, wii) except this specific configuration of Lion on that iMac hardware work perfectly. Why should be a fault of the network infrastracture ??

If all the other devices work correctly than the most logical thing is to think that the problem is in that specific Lion configuration.  I'm not saying that Lion is not working.... Lion generally works and the proof is on the Macbook Pro which works well but on my specific iMac hardware there is some nasty bug embedded in this configuration ....

The Atheros wifi card are not the same...

Personally I think that the problem is to an higher level than the HW driver of the cards.

I tried to replace also the Atheros drivers of Lion with the Snow Leopard drivers and this is not solving the issue..

it's like there is something happening after the initial data exchange which corrupts the communication (which seems stucked... )

Anyway my message is only to support the debugger to try to focus on some of the combination Lion + Mac Hardware showing the problem. Honestly I don't have time to do their job.

Until the problem won't be detected and solved the only option is to go back to Snow Leopard.

Uby

Uby wrote:

 

The network is pretty simple, a router distributing dynamically the IP with DHCP.

Look's very simple, eh?

But isnt ... This (really good) book provide 464 pages about that pretty simple" thing called wireless. -> http://shop.oreilly.com/product/9780596001834.do

Uby wrote:

 

It seems you are convinced that the problem is in the network or in the infrastructure... why ???

18 years experience as professional in IT, working with wireless networks since 1999 and a few thousand "solved cases" along the timeline.

Uby wrote:

 

All the other devices (several iphones, ipad, pc, ps3, wii) except this specific configuration of Lion on that iMac hardware work perfectly. Why should be a fault of the network infrastracture ??

In most cases it's not a big fault. It's more the addition of minor "glitches" leading some day to a remarkable or major issue.

For instance, since Lion's new baby Airdrop, the African animal is aware that all network participants have to keep the rules and Airdrop will work only if the using systems are in the domain "local" and keeping the rules means therefore also that all in a segment have to be in the same domain.
Older systems may tolerate if in a network segment (your home network) one of the clients are in a not matching domain; e.g. Windows systems which use by default (depending on version) "workgroup" as domain name while all Mac's in the net use "local" for that. Suddenly since Lion enters your network you may have a problem with DNS name resolution. What's your first idea? Lion killed my net.
Instead the truth behind the problem is'nt Lion. It's the simple fact that the rules for networks are compromised.

Eventually check your wireless with the Lion onboard tool -> http://macs.about.com/od/LionTipsNtricks/qt/Os-X-Lion-Wi-Fi-Diagnostics.htm

Lupunus

Stop misleading people, lupunus.

If the only variable in the setup to change was the OS of the computer, how could it not be the problem if after changing it, things don't work?

My car breaking down and me not getting to school is not the car's fault. It's the fault of the road configuration, as there are not teams of people waiting along them to push my car along when it's broken.

See how silly that sounds?

"Why should be a fault of the network infrastracture ??"

Ignore lupunus, Uby.

I think you're on the right track with the problem being somewhere higher in Lion's network stack than any problem with the physical layer (in this case, the wifi card and its drivers). My own troubleshooting/testing confirmed a lot of what you said, as I did the same thing with swapping the drivers with Snow Leopard versions. If you could, open Console.app (it's in the Utilities folder under /Applications) and look for log entries around the time when you notice problems starting to occur and paste them here. I'm interested to see if we're getting mostly the same entries. To narrow things down in the log entries, try searching for "BSSID" in the filter/search box up top. What do you find?

hormelmeatcompany wrote:

 

Ignore lupunus, Uby.

Yeah Uby, ignore me cause I'm stupid, obnoxious and daft. I've earned my reputation on job and here only by praying silly and useless words.

If my car breaks down, is it the road configuration's fault that I can't get to work or school?

Lupunus, the process of elimination and the scientific method will beat job experience and Cisco certifications every time.

Why no answer to my question? If the only variable to have changed was the OS, how is that not the problem?

hormelmeatcompany wrote:

 

If my car breaks down, is it the road configuration's fault that I can't get to work or school?

In information technology infrastructure is the physical hardware used to interconnect computers and users. Infrastructure also includes the transmission media and also the router. In technical discussions "infrastructure" also includes the settings and configurations of the physical hardware including the settings of that little interface inside the computer named NIC (network interface controller) or WNIC (wireless network interface controller).

Let's stay on your picture...

If you went to school and your car brake down there could be different reasons for that including a road configuration fault if your car hit a hidden road hole and the axle break.

To run a working network connection there are clear defined rules and regulations to follow.

and a working network connection have absolutely nothing to do with the kind or version of the operating system of any connected computer.

The network itself is for good reasons independent from any operating system.

For that is valid:

If you have a problem in your network the reason is in no manner the operating system of your computer.

There are only three possible roots of a network problem:

• Hardware fault
• Wrong setup of the infrastructure
• Wrong or mismatching configuration* on at least one of the participants.

On wireless networks additionally disturbances of the radio stream; e.g. from interferences.

Lupunus

*) Wrong configuration can include a "bug" in the firmware of the NIC/WNIC but that is in the cases we discuss here very unlikely as millions of Lion users have no problems with wireless.

Scrivo dall'italia....il mio inglese non è perfetto!

Carissimo, io so che ho due Mac che lavorano sulla mia stessa rete wi-fi e, dopo il passaggio a Lion, il Mac Book (che ha firmware Broadcom) funziona perfettamente mentre il mio IMac (che ha firmware Atheros 9280) non funziona più dal 23 Luglio.

Questa è la dimostrazione che i driver Atheros non funzionano con Lion....si tratta molto probabilmente di un aggiornamento sbagliato dei driver.

Nient'altro da aggiungere...se non che mi sembra che dopo più di 70 giorni di upgrade a Lion Apple non sia ancora intervenuta!

Buona giornata a tutti....e non litigate!

And if there were no potholes in the road before or after the car broke down?

Lupunus, I have a hard time believing you when you say you have 18 years of experience. I have about 3 and it's not hard for me to grasp where a problem might be if it breaks after I've only changed one thing in the entire setup, which is the OS of the machine in question.

I asked our networking people here at school and they didn't change anything about how the network functioned on or around 9am, July 20th, when I first booted into Lion and noticed the problem.

Ciao.

Io ho usato questo post presente a pagina 56 di questo thread da parte di Robygen ed ha funzionato.

si tratta di un work-aroud, ma per il momento (modifica fatta un paio di settimane fa) funziona.

Roberto

==========================

Here is a guide (in italian...but I think you can easily translate it)

http://miaplacidusedaltriracconti.blogspot.com/2011/08/problemi-wifi-con-os-x-li on-la.html

It's similar to the guide posted by Jester. Kext utility makes the backup of lion's 80211 kext by itself.

I know this is not THE solution.

But it's A solution.

==========================

hormelmeatcompany wrote:

around 9am, July 20th, when I first booted into Lion and noticed the problem.

If you want to stay with what you think is obvious, do as you please.

EOF

Ciao!

Ci ho provato anch'io ma non ha funzionato....non so se ho sbagliato qualcosa, ma i driver sono rimasti gli stessi e continua a scollegarsi....già avevo paura di toccare qualcosa....

Questo però conferma quello che diciamo da tempo: se io ho due macchine una funziona e l'altra no, è un problema di driver, nella fattispecie Atheros.

Buona serata!

Hello All

Unfortuantely bad news...

No way... I just finished to install the 10.7.2 Gold Master and like suspected even this version is not solving the problem.

Robertone thank you for the hint but I had already tried that solution and it didn't work either..

Conclusion:  I still cannot use my iMac with Lion. Tonight I reinstall Snow Leopard ... It's a pity because I like Lion (especially the full screen mode, new new Mail, Launchcontrol etc.) but I cannot stand to remain without internet..

Lupunus thank you the same for your support. Sorry to ask this but I didn't have time to read all the hundreds of post before... Did you suffer this problem ?

Uby