Loosing Airport Connections - Core Duo

My AirPort connection doesn't work on MacBook Pro handed to me. No bars in the AirPort menu, no network shows.
MacBook Pro 15", Intel Core Duo, 2.16 GHz, 2GB RAM
Running Leopard 10.5.4 with all other Apple updates
AirPort Extreme (0x168C, 0x86 - Atheros Card), Firmware: 1.4.3.1
Every once in a blue moon, when the Mac was off for a while, it asks to connect to any wifi network around. It rarely connects to the selected wifi network and then only for about 5 minutes before it degrades constantly (watching it with iStumbler) and in about 5 minutes it's dead. When it connects iStumbler never shows more than about 50% signal strength.
In order to get a signal at all I must be right next to the router, only to die after 5-10 minutes. If I try to join the network, it throws a "connection timeout" error.
System.log reports:
Jul 5 15:27:16 localhost kernel[0]: AirPort_Athr5424ab: Ethernet address 00:17:f2:4b:c1:c0
Jul 5 15:27:39 klunker airportd[57]: Could not find any preferred networks; trying broadcast requests..
Jul 5 15:27:42 klunker airportd[57]: Broadcast requests also failed..
Jul 5 15:27:43 klunker airportd[57]: Probing highest ranked networks via directed scan..
Jul 5 15:28:44 klunker SystemUIServer[90]: Error: airportd MIG failed = 1 ((os/kern) invalid address) (port = 25967)
Jul 5 15:29:35 klunker airportd[169]: Error: __ACNetworkAssociate() failed to find Hoefts
Jul 5 15:29:35 klunker SystemUIServer[90]: Error: airportd MIG failed = -6 ((null)) (port = 25967)
Jul 5 15:29:35 klunker airportd[169]: Error: processcommanddict() failed
Jul 5 16:00:37 klunker iStumbler[172]: Exception raised during posting of notification. Ignored. exception: '* -[NSCFArray objectAtIndex:]: index (-1( or possibly larger)) beyond bounds (0)' invoked observer method: '* -[AirPortPlugin tableViewSelectionDidChange:]' observer: 0x191750 notification name: 'NSTableViewSelectionDidChangeNotification'
This happens on various networks (not just my home network with a Netgear router - mixed b/g, channel 6, WPA)
I first checked on my router (switched channels, removed encryption, updated firmware, reset everything). Tried different wifi networks. Nothing would improve it.
I've tried all of the Mac solutions I could find online:
Removing the airport prefs, booting into safe mode, turning IPv6 off, DNS entries, removing and adding the Airport setup, turned the airport utility process off (I use a Netgear router), reset PRAM, Repair Permissions...
I even reseated the card and the antennae (2) in case it was a bad connection.
I finally erased everything and installed from the original disks 10.4.6 and tried upgrading slowly (tried 10.4.6, 10.4.11, 10.5.0, 10.5.1, 10.5.3, 10.5.4), all the way up to 10.5.4.
iStumbler or AP Grapher find the network at the signal strength of about 20% while the Airport menu indicator can't see or connect at all.
Any help would be greatly appreciated.

Have you connected to the router using an ethernet cable? Try this to check that the signals are getting to & through the router. From my own experience it is most likely the wifi connection that is not working as it should.
Make sure that you also do the routine maintenance things such as using Disk Utility to repair permissions. Errors here can affect some processes.
I suggest that you also report the problem to Apple by clicking on the Contact Us link at the bottom of this page. On the screen that comes up choose the most appropriate link at the lower end of the RH column. I would include this copy of the System log. This is the main way we users have of getting Apple's attention. They don't promise any direct response but they will check the issue. You should also give them info about the router(s) you have had this problem with & any other info that might help them sort it out.
Neville

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Suggest that you also cross-post over in one of the AirPort Forums.
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To verify that 'n' capabilities are enabled:
Open Network Utility (found in the Applications > Utilities folder)
Under the Info Tab, choose Network Interface (en1)
In the section "Model: Wireless Network Adapter," if it says (802.11a/b/g/n), the 802.11n capability is installed. If it says (802.11a/b/g), you do not have the 802.11n capability.
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Since new, my Macbook core duo has sent all audio to all analogue outputs with frequency distortion. Some physical hardware or firmware in the analogue section adds a bass boost to the frequency response of the audio.... And, this boost adds bass frequency distortion to most, if not all, of the audio analogue output.
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Army wrote:
This might not help you a lot, but if you want a stable system, try using packages from the repo wherever possible, look at the news before you update your system and don't mess things up (like bad configuration etc.).
When it comes to performance, you won't gain much by compiling linux by yourself! Just use the linux package from [core] or if you want a bit more performance, install the ck-kernel from
[repo-ck]
Server = http://repo-ck.com/$arch
(this has to go to the bottom of /etc/pacman.conf)
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Hmmm, Linux-ck-corex doesn't even load.. I am now trying to install the generic one. Hope it works.
Edit: I will first try linux-lqx...
Last edited by exapplegeek (2012-06-26 18:33:31)

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Would this be an antenna or card being loose?
Sounds like it.
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http://store.apple.com/uk/product/D4141ZM/A?fnode=MTY1NDA0Mg&mco=MjIzMDkzNA
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What it doesn't tell you is that if you have an early version of the iMac (pre-Sept 2006) that shipped with the Intel Core Duo Processor (note - not the Core 2 Duo) then the upgrade will not work.
If it says you need to have a Core "2" Duo processor, then it seems to me they are telling you very clearly that it will not work with the earlier Core (no "2") Duo iMacs.
The "late 2006" iMacs with Core 2 Duo (except for that one education model they mentioned) have wireless networking hardware that is 802.11n capable. When they were initially sold, Apple chose to NOT enable the "n" capability for some reason; maybe because the standard was still in flux and not enough testing had been done with the driver. Later, they enabled the "n" capability with a firmware update. But that was only possible because the wireless hardware was already capable of doing "n."
Earlier iMacs do not have this hardware so there is no way to enable it with a firmware or software update. 802.11g is plenty fast enough for Internet access (you won't notice a difference with "n"). If you are using Time Machine over wireless, it may take a while longer to do that initial backup (you could connected it by Ethernet cable when it is doing that initial backup), but subsequent backups are incremental, so the "g" versus "n" speed difference will not be as critical. Since your iMac is Core Duo (32-bit) and the future of Mac OS X is 64-bit, especially after Snow Leopard's release, it may be best to save your money and keep your iMac intact (not opened).

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I have an original Macbook Pro Core Duo, purchased not long after Apple's announcement of "Bootcamp", and it has a "Wireless Network Adapter (802.11 a/b/g).
From what I can tell from various documentation around the web, this should be upgradable to 802.11n with Apple's 802.11n Enabling software, however it tells me that the hardware is not compatible.
If anyone can suggest what I am doing wrong, or whether I miss out, that would be good.
Also, assuming it can not be upgraded, will running my local Airport network in "802.11n 5GHz 802.11a compatible mode" affect the speed of my other 802.11n devices on the network?
Thanks.

So you're basically saying 'Link Speed' shows the current connection? If so, the problem resolved itself. Sorry, my bad. Thanks anyways.
(My Time Capsule hasn't arrived yet. I'm currently using an older version of Airport Express.)
Another thing. When I asked at the local Apple Center for the 802.11n card, they told me, the card itself is not sold separately and even if so, it could not be exchanged, since it's unremovably attached to the logic board. Why do they tell the customers something like that? I mean, if Apple doesn't want the users to make changes like that, fine. Then they should say so. But why make up stories in order to dissuade people from their ideas? Is that common policy?

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I just bought Airport Extreme for "n" speeds. I didn't realize it required Core 2 Duo for the fastest speeds. Does anyone know of an upgrade card I could install to my Core Duo iMac? Thanks.
iMac Core Duo, iMac Core 2 Duo, MacBook Core 2 Duo Mac OS X (10.4.8)

There is an article floating around the web of
removing the 2 antennae extreme card from a Mac Pro
and installing it in a MacBook to get 802.11n
connectability, but the connection isn't reported to
be any better or faster.
Also, everything on the network must be 802.11n to
get the n speeds. A mixed network is slower.
I just took the Airport Extreme 802.11n module out of my Mac Pro and installed in my CoreDuo MacBook Pro. After applying the enabler patch off the CD, my network connection speeds report as 270mb connecting to a wide-band N-only Airport Extreme Base Station.
Performance boost on initial file transfer speeds are significant. A 203mb test file took 6+ minutes on my G-only network. The same file, on the N-only network took 49 seconds.
I would call that both better and faster.
Of course for those looking to use it on the mixed B/G/N networks to surf the web aren't going to notice any difference. I think a lot of people forget that regardless of their wireless network speed, even on the fastest of home broadband connections they're not going to be getting more than 8mbs coming into the WAN side of the network if they're on fiber cable. A DSL connection might get 2mbs. The internet itself for most will be a significant bottleneck for most users.
If you're doing a lot of transfers of large files on your internal LAN, the performance is worth the $49 part.
What's really bizarre is that Apple chose to put 100mbs wired ethernet ports on the Airport Extreme Base Station, which means when I hook a USB drive to it, I should actually get faster transfers wirelessly than wired. How bizarre is that?

AirPort Extreme (802.11n) For non Core Duo Computer

I have two older macs:
IMac G5 20 1.8GHz[1.5GB -160 GB]
IBook G4 12 1.07GHz [1GB - 30GB]
and currently using an AEBS
ANY CHANCE FOR ME TO USE THIS NEW
AirPort Extreme (802.11n) ???
THANKS
RG
IMac G5 20 1.8GHz[1.5GB -160 GB] AX - AEBS ::IBook G4 12 1.07GHz [1GB - 30GB] AX :: Ipod 60 GB Mac OS X (10.4.1)

802.11n refers to a speedy wireless connection. When
you connect with a wire, you're not using 802.11 at
all. You're using Ethernet, and your Core Duo mac
will connect to the Airport Extreme at 100Mbs (a
little faster than the top speed of 802.11n). Then
The top speed of 802.11n is considerably faster than 100Mbps. In narrow band mode, the Airport Extreme cards are connecting to AE Base Stations (AEBS) at 130Mbs. In wide band mode, 270Mbs. In theory, that makes connecting to the new AEBS device wirelessly faster than via the wired ethernet. It's a design decision that just doesn't make sense in my opinion.

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An update for those interested - In a posting Nov 12, 2010,
https://discussions.apple.com/message/12574450
Al Cellier said : Earlier this year I upgraded my mid-2006 Mac Mini (Core Duo) with an (Macbook Original Wireless WIFI Card 802.11n AR5BXB72 - Atheros) Airport Extreme Card to get N-WiFi. That works fine in Leopard 10.5.8; but in 10.6.4 & 10.6.5, I can't get connected to my router. Is a new driver needed for 10.6 ? Network Utility / Info Tab / Network Interface (en1) reports "Model: Wireless Network Adapter," as (802.11a/b/g/n). As an aside, the Bluetooth seems much flakier now than with the original card.
The update, as of July 21, 2011 has that now that I have installed 3 antennas onto the WiFi card instead of just one, and now the Mini works great in Snow Leopard 10.6.8 !!!
We are getting full 300Mbps status on the n protocol.
No added drivers or tweaking, just the antennas and the system update (system update alone was not enough).
Mac user since 1984, and an optimist ...

I purchased 2 extra antennas (I found the seller on ebay; they are small circuit boards with attached cable and tiny connector). They sit just outside the box at each rear corner, and are taped to the housing; the cables were fed into the unit thru the ventilation slots, carefully routed to the wifi board where they snap into place. Unfortunately I didn't take photos inside; I could photograph the antennas sticking out, if you want.

Airport sleep/wake problems on iMac Intel Core Duo

I have seen several posts with similar issues but I haven't found an answer yet that has worked for me consistently so I am going to restate the question. I have a 20" new iMac CoreDuo with 1Gb RAM and of course an Airport extreme wireless card. When the computer goes to sleep, first of all it often takes a very long time for it to come awake (on the order of 30 seconds - or more), then when it comes back the wireless connection is 1) either completely missing, in other words, the hardware can't even be found in system information or 2) the airport is detected, radio is on, but it can not find any networks to connect to. The only thing I have found to fix this issue is to do a hard reboot. I have done an archive and install, and have also deleted the system configuration folder multiple times. I have been on the phonw with Apple tech support and they have not helped beyond those two suggestions and the only reason they suggested them was because I forwarded them the posts on these forums that recommended them. Can anyone please suggest a fix for this issue? Assuming, of course, that it is not a case of a bad piece of hardware/firmware in which case I just have to wait for a new driver or take it in to the "shop".
iMac 20" Intel Core Duo Mac OS X (10.4.4) 1Gb RAM

I have the exact same configuration and I haven't had this problem. I have noticed that the signal has no bars when waking from sleep, but then after a couple of seconds it automatically reconnects. Maybe it IS bad hardware. Have you isntalled any software that is network related (including widgets, drivers etc...) or do you have any drivers loaded... wireless printer driver, etc...
My profiler looks like this (sorry it's in italian but you could still compare the info)...look at the firmware, maybe it's different.
Dati scheda AirPort:
Tipo di scheda wireless: AirPort Extreme (0x14E4, 0x89)
Impostazioni internazionali scheda wireless: Universale
Versione firmware scheda wireless: 100.9 (3.120.28.3)
Network wireless attuale: Wireless and Free
Canale wireless: 3
As a last resort, you could completely wipe the computer clean and reinstall the OS. This would eliminate the possibility of any 3rd party stuff interfering.

Is there an E-SATA connect on my 2.16 Intel Core Duo MacBook Pro?

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I've suddenly got to work with an E-SATA setup. I'm using the USB port right now ... but have been told the E-SATA would run smoother, faster. ??? This is to edit a film on the fly. I've been given the data on a naked drive plugged into a black box that gives me either USB or E-SATA.
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Any SATA 3.5" drive will connect to you PowerMac G5 or Mac Pro.
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Loosing Airport Connections - Core Duo

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