itunes 12 will not recognize iphone

Oskapt that did it! Thanks.

Adrian, thanks very much, your suggestion was spot on. The issue has been bugging for me weeks, and now I have the work around. I haven't coded it into crontab, as I don't have know-how to do this, but simply killing usbmuxd in the Activity Monitor is easy to do. Let's hope Apple fix this in their next update.

down load CronniX on Mac and paste ----- ps ax | grep usbmuxd | grep -v grep | awk '{ print $1 }' | xargs kill ---- select your time when you want to have the it run. If you want to check to see if it's activated, you can go into terminal and type --- crontab -l

Exactly the same with me. A reboot works every time, but the bug recurs.

Read back a couple of pages, and you'll find that I posted a solution and that others have also posted variants that will return peace and sanity to your iRelationship.

[:edited:]

That's the thing about bugs, right? Rebooting doesn't fix a bug. Rebooting resets the environment in which the failure exists. The bug then recurs, and after some period of time the environment no longer works. Rebooting resets the environment.

It's reasonable to reboot once to see if that fixes an issue. The issue might be caused by some RAM that wasn't freed or a random combination of programs that collided for the same address space, or whatever. However, if you reboot, and then the same problem happens again, rebooting isn't your answer. It's your workaround, a stopgap, and at that point the actual _fix_ for the bug is outside of your control.

Unless, of course, you're an iTunes developer. If you were, though, you wouldn't be reading this forum. 🙂

I think I got it.

After turning of and on my mac, itunes found my iphone and ipad again. sync and all was good. I ejected it and the next time it didnt work. I have stopped ejecting my iphone and pad and just unplugged them. The next time I plugged them in, they were visable and I was able to sync without any problems...

That is at least what is working for me...

Marcus

My money is on "no." Read my earlier post. The reboot restarts usbmuxd, which takes about 30 hours to saturate its connection limit. I bet that the problem will magically reappear again in a day or so.

Per a separate thread that I'd created before finding this one, I've set my Mac to restart at 6am daily and I've ordered a 6 port USB charger to reduce connections of our 7 iOS devices. Mitigate things until/if fix comes.

iPhones won't mount in iTunes - Mac restart needed

Kelly Wickerson suggests restarting mdns as well if doing wifi sync. I just set my Mac to restart 6am daily for a while...

http://deciphertools.com/blog/2014_10_222_no_devices_showing_in_itunes/

Thank you very much for posting this. Given my lack of technical knowledge, I'm definitely in the "shake my fist in rage until Apple fixes it" camp, but I understood the general gist of your post and found the force-quitting usbmuxd solution effective to getting my devices to show up in iTunes. I hope Apple knows about and has resources dedicated to solving this problem.

As a side note and just to vent, if I had the time or ability to bug hunt and figure out how to make this ecosystem function smoothly and as advertised, I probably would have just stuck with my PC. At least they have better games.

Dear Adrian, Thank You so very much for your solution. I followed your instructions and viola it worked perfectly for me.

A quick question? Why do you run "netstat -an | grep 62078 | wc -l" 7 times? Is it to make sure that there are no "CLOSE_WAIT" states? Is 62078 the "fixed" listening port "universally" as I used that number too and it worked? My UNIX is way rusty so forgive me for asking what may be an obvious question.

Now for a bit of history on my problem. Last weekend I upgraded from my iPhone 5 to iPhone6+. Migration etc all went smoothly. I was a happy camper. Then about 4 days ago, whilst synching my iPhone to my iMac directly via USB, I got an error message and subsequently my iTunes (latest Version 12.0.1.26 on my OS X 10.9.5) would no longer recognise my iPhone. Today, when I tried to recharge my iPad 3 (which is set up for wireless synchronisation) I noticed on iTunes that even that was no longer recognised. I have been searching high and low for a solution over the last few days with no success. When I tried your step-by-step instructions, I became a happy camper again. (Note: I have never previously experienced this problem over the years with my various iPhones and iPads.)

BktBird wrote:

A quick question? Why do you run "netstat -an | grep 62078 | wc -l" 7 times? Is it to make sure that there are no "CLOSE_WAIT" states? Is 62078 the "fixed" listening port "universally" as I used that number too and it worked? My UNIX is way rusty so forgive me for asking what may be an obvious question.

Awesome! Glad to hear that it worked. To answer your question, the number of times isn't important. What I'm looking for is the number of connections in CLOSE_WAIT state to be getting smaller and smaller (as the system is finally able to close them). I'll break down the command:

• netstat -an : show me network statistics for all sockets (-a) and don't try to resolve IPs to DNS names (-n)
• grep 62078 : show me only the lines that have 62078 in them (the port that is stuck)
• wc -l : count the number of lines and just show me the number (instead of scrolling 4000 lines of text that I don't care about)

Quick question oskapt. If I paste "14 4 * * * ps ax | grep usbmuxd | grep -v grep | awk '{ print $1 }' | xargs kill" into Cronnix it would be the same as doing it in crontab?

yes, make sure you have it in root and usr

Very interesting. I've written this up on my blog: One Possible Explanation for Some iTunes Sync Problems

I'm curious, though, about your various iOS devices. In your Terminal output, I see different MAC addresses. Can you look through and see how many different ones show up? I wonder if iTunes is opening a connection through usbmuxd even for devices that you don't sync with that specific computer. In other words, if it detects any iOS device with Wi-Fi syncing turned on, and creates a connection to it.