Mountain lion wifi problems

I dont want to jinx the one relief of a chronic string of maladies that have occured since installing this OS. but I needed a new Router, the old was slooow b/g only and horrid range, switching to a new one has been the only remedy so far. Im still going to revert to the OS that came with the MBP as soon as I get the discs from Apple and get sufficient media to backup everything. We really should all be compensated by Apple for the time and aggro.

That's what I would do - I mean, I have the discs right here on the desk. But for me to use it and reinstall SL means reformatting the HD. Of course I have a backup, but not earlier than 10.8, so I won't be able to do a clean recover from my external drive.

Can be done manually, of course, but two problems arise: it's a lot of work, guaranteed to be messy; and I'm not sure whether reformatting the drive will eliminate my Bootcamp partition. I don't have access to another "legit" Windoze software anymore and I will lose the ability to play the couple games I have it for.

Hey you know what's another neat feature Mountain Lion has to offer? The WIFI will disconnect when the screen sleeps. So basically nullifying long downloads or Torrent transfers. So you have to keep waking the unit as Power saver no longer has the Network connections checkbox. Really top notch coding going on at Cupertino! I have NoSleep and it doesnt seem to be working properly now with this OS either. Really exsaperating.

I haven't investigated that ^ since installing ML, but I'm sure I disabled sleep while I was still running SL. I'll check it out.

Breakthrough! I went into my router's wireless network settings and changed my security settings and encryption protocol from WPA2/AES to WPA/TKIA. I just watched the Halo 4 Forward Unto Dawn vid with no net breakdown.

Seems a little bit slower, but could be my imagination. This might have to do, until Apple patches ML or I find a way to downgrade to SL sans hassle.

I keep checking back for any new fixes or a word from Apple, but still nothing. Apple is asleep on this issue. What's it going to take? Apparently Facebook integration is more important than a crippling bug that breaks internet connectivity in their OS. I've been a Mac user since long before the iPhone era, and I have to agree that it seems they've gotten quite lazy in the past few years. Shameful that I'm resorting to Windows now since OS X can't perform a very basic and necessary function. I don't understand how there are so many users reporting this issue and Apple still acts like they've never heard of it.

Walked away from my Steam downloads for about an hour, with Energy Saver set to stay awake for network activity. Sure enough, my downloads had all stopped ten minutes after I left, and I had to restart Steam to get them going again. Guess I'll have to settle with never-sleep setting until someone at Apple fixes this.

In the meantime, really enjoying my functional WiFi since adjusting network security. Doesn't absolve Apple by any means, but it'll do for now.

I am one of the fortunate? ones who loses wi-fi only when I allow the computer to sleep (late 2009 iMac). I can re-connect by opening network preferences>assist me>diagnostics>select location . . . I mention this not as a fix, but perhaps it will save a few people a few steps in re-establishing connection. I have tried every fix posted with no better success, including reinstalling Mountain Lion. The net result has been that instead of intermittantly losing connection when the machine sleeps, it now happens every time.

To my knowledge, Apple has not even acknowledged that there is a problem, other than indirectly on these support communities. When I went into the local apple store and spoke with one of the "geniuses" I was met with a blank stare. OS upgrades have made no difference.

The mystique as well as the reputation of Apple has already been severely strained as a result of their "head stuck in the sand" approach to this issue. I am a relatively new convert to Apple, if 3 years can be considered recent. PC and microsoft is not looking so bad anymore, and a lot less expensive.

I have had an iPad on the top of my wish list for a while but this OS problem is causing me to reconsider. Maybe Android is not so much a compromise?

Lesdmd, the sleep function is designed for the mac to sleep and reconnect with wifi, etc successfully after 24-36 hours between activations. If you leave it on past that time, then it shuts down the protocol to connect automatically with wifi/etc and you will need to do it manually. I would reccomend though that you shut it down completely if you are not using your mac for 2-3 days plus with a normal start when you get back into it. Sleep is a very short term convenience for the regular user which I find great, the normal shut down which is done in shorter time then any PC I've worked on is for longer term storage of the machine.

Hope this helps

Rgds,

John

On my case, the biggest improvement was reached but reconfiguring my rout for WPA2 security instead of WEP. I had also noticed improvements by force MTU size to 1453, fixed IP (no DHCP) ...and disabling of sleep mode.

I find this totally unacceptable (and had to abandon two WEP-only device) but a least I recuperate most of the stability ...but with poorer performances still.

I finally "fixed" it by just running a patch cable to my imac.

I am shocked this issue hasn't been fixed. We shouldn't have to look for resolutions in forums that may or may not work or find applications to uninstall or whatever.

The fact of the matter is you expect it to work since you pay a premium for it (apple products) and wifi on ML is simply broken for certain hardware that Apple claims compatibility with, this is unacceptable.

APPLE FIX THE ****** ML WIFI NETWORK STACK ALREADY!!!!!

I find that hard to beleive as I leave for lunch and come back with in an hour and it has no network connection. My wifi is off and I am using a wire to a gb switch. This happens when I use wifi as well though I dont use Wi-Fi often. Oddly enough, happens on my iPad (new iPad) with iOS 6. While I hate lion with a passion, this did not happen with Lion. This did not happen with iOS 5. I am curious what is similar with iOS 6 and OSX 10.8 that would cause this. I suspect Apple has no clue what to do other than ignore it. Maybe there is a new OS on the horizon, they refused to do anything about permissions with Lion since ML was due out soon. Then again, the permissions issues with Lion have been around since day 1 and are still present with 10.7.5.

Of course you are 100% correct the "explanation" above is pure nonsense. If you are transferring torrents all night should one have to continually drink coffee in order to prevent your Mac from sleeping and losing its connectivity? Of course not. The properly functioning OS knew to let the user decide. The peons to do clean installs from a thumbdrive annoy me even more, if that is what it takes to have an operational system than that is how the OS should be pushed. Not OTA if it cant be properly implimented that method. Im fed up even leaving this comment led me to have to change one of my myriad Apple passwords that they require for every single thing, cannot this be streamlined? Why must I seperately log in to, App store, Itunes,Comment threads,Website, My own friggen desktop asks for a seperate password on occasion to delete files etc. Its assinine. I had to buy a new router to get the dropouts sorted only to now lose connectivity at the mbp's whim. This is aside from the incredible bouncing beachball that I rarely saw prior to this and the battery that now not only has a fraction of its life but is steadily losing capacity by the day. Maybe one of their exalted "geniuses" can come clean my apt in compensation for all the time Ive spent trouble shooting what is obviously a Beta level OS at best. #gag

Launch Temrinal and then paste this:

sudo /usr/libexec/airportd debug +alluserland +alldriver +allvendor +LogFile

(You can disable logging later on by using the command: sudo /usr/libexec/airportd debug -alluserland -alldriver -allvendor -LogFile)

Reboot your machine now.

XD

I have been having the same fun as you all!!!

After months of not using my iMac I fixed the problem today by upgrading the firmware on my router.

Since updating my iPhone to IOS 6 and upgrading my iMac to ML, my wifi connection would constantly stop working and I would have to disconnect and reconnect.

Hope this helps somebody before Apple updates drive you insane!!

Hello,

I did read quite the whole thread and found so many of malfunctions like you.

I did tray so much and got different results.

Now I made a tray and had an hit. The Wi-Fi came up so fast after the restart,

I never had befor. It looks really good.

I got a new iMac 27 last week. I use a Fritzbox with VDSL since two years.

Never probs with XP PC.

I did read yesterday about the WEP and WAP keys. ASCII beginning with "

and HEX with ?. I never saw.

I always used the 16 digit long numeric WAP key of the Fritzbox.

What I did:

deaktivate Wi-Fi

Now I changed it to a 10 digits long alpha-numeric-specialsigns password in the ROUTER.

I deleted the Airport-keys in Keychain, one in Login and on in System on the iMac.

And I deleted all environments on Networksetup

Than I started to setup a new Wi-Fi .

Choosed my router, entered the new WAP-key

and in 0,01 seconds the iMac was connected.

I tested a Off and ON.

0,01s connected.

Please tray it and let us know.