Currently Being ModeratedMay 17, 2012 3:46 AM (in response to rsalgado76)
I have had same problem after updating to 10.7.4. Good that you find a solution to re-enable it without reboot.
Currently Being ModeratedMay 17, 2012 4:05 AM (in response to teemumm)
Unfortunately, this is only a workaround, not a real solution...
Maybe if enough people have this same problem, we can get Apple Support to look into it - go ahead and click on "I have this question too".
Currently Being ModeratedMay 17, 2012 10:32 AM (in response to rsalgado76)
Same problem here. But even worse your work around does not work on my 2010 MBA. It freezes immediately after unloading. And I am losing my ethernet connection if a plug in any device, e.g., a USB stick, into the second USB port, too. Even without touching ethernet USB.
Currently Being ModeratedMay 21, 2012 8:03 AM (in response to rsalgado76)
Adding additional information, which I believe is very relevant: if the device is left in its zombie mode, after a few minutes it seems to flood the network with invalid packets, efectively DOS'ing it.
I will try to find out what type packets it is sending out and post here.
Currently Being ModeratedMay 22, 2012 12:41 AM (in response to rsalgado76)
This is a major bug.
I can confirm it is happening to me as well.
Is there a way to downgrade to 10.7.3?
Currently Being ModeratedMay 22, 2012 2:33 AM (in response to rsalgado76)
I've investigated the symptom regarding the network flooding when the device is in zombie mode and came to the conclusion that the device is sending garbage to the network, not real packets.
Using Wireshark on a different computer shows NO traffic (with no other computers connected but these 2), which means that these are not recognizable ethernet frames. Nonetheless, the gigabit switch show a lot of traffic, which I am sure is just the garbage data being marked as colisions...
So, summing up the symptoms:
- Apple USB Ethernet adapter (A1277) loses the hot (re)plugging capability
- If the device is left in its zombie mode, after a few minutes it seems to flood the network with invalid packets, efectively DOS'ing it
It looks that there are a number of people facing this after the 10.7.4 update, but this hasn't sounded an alarm with Apple Support people, it seems...
Currently Being ModeratedMay 23, 2012 1:30 AM (in response to rsalgado76)
I have the same issue, it's very frustrating.
I am able to use the kextload/kextunload workaround just once.
- First time it works (plug the adapter in, use kextload / kextunload)
- Unplug the adapter
- Plug it in again
- Use kextload: Now the whole system crashes, I have to power off the MBA.
Is there any way to downgrade to 10.7.3?
Currently Being ModeratedMay 23, 2012 6:47 PM (in response to rsalgado76)
I just spent 90 minutes on the phone with Apple tech support. We were able to track this specific problem to the "Android File Transfer Agent" which was in my Login Items list. This Google program is used to allow Mac OSX the ability to communicate via MTP to an Android phone. This software lets you see the Android as a drive in Mac OSX. If you uninstall this software, the behaviour listed goes away.
I hope this helps.
Currently Being ModeratedMay 23, 2012 11:05 PM (in response to redbull66)
Great! Thank you very much for tracking this down. Works now for me!
Currently Being ModeratedMay 24, 2012 12:27 AM (in response to rsalgado76)
This is great, thank you for sharing and tracking down.
Currently Being ModeratedMay 24, 2012 1:33 AM (in response to redbull66)
Thank you for the help, this has solved the issue.
Currently Being ModeratedJun 10, 2012 5:52 PM (in response to redbull66)
This solved my problem as well. I mean, it obviously creates a new problem, but for a temporary (we hope) workaround, it is aces
Currently Being ModeratedOct 9, 2012 10:44 AM (in response to rsalgado76)
Just a heads up. I've had this same issue and just disabled AFT... Yeah, it's a pain, but now it gets interesting.
I have a USB Smartcard adapter SCR3500. When plugging this in, it also disables the networking, just like the Android File Transfer issue. I thought that it may be a 10.7 thing, so I upgraded to 10.8. Same exact problem.
I called AppleCare and they told me to take it into a genius and see if they can fix it! I'm really frustrated because it's NOT a hardware problem, I believe it's a software problem that I should be able to diagnose with apple support. I think it's a lost cause...