As stated in http://ubuntuforums.org/showthread.php?t=1628529 , specifically in http://ubuntuforums.org/showpost.php?p=10182217&postcount=24 and http://ubuntuforums.org/showpost.php?p=10205459&postcount=32 :
To do what fallows you need libimobiledevice-utils installed, if you don't have it sudo apt-get install libimobiledevice-utils DodgeV83 ( http://ubuntuforums.org/member.php?u=547250 ) said, and it is also true for me The PPA by itself didn't work for me. I then had to run: idevicepair unpair idevicepair pair idevicepair validate Got the answer from the following Bug Reports http://libiphone.lighthouseapp.com/projects/27916/tickets/183-cannon- mount-iphone-with-ios-421-in-ubuntu-1010#ticket-183-13 http://libiphone.lighthouseapp.com/projects/27916/tickets/181-cant- mount-iphone-in-ios-421#ticket-181-10 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/685752 Title: iPhone no longer mounting after iOS 4.2 upgrade -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs