Same problem here, but then on Xubuntu 18.04.3 LTS computer and an old iPhone 4.
Failed to mount "Documents on XYZ iPhone". Unhandled Lockdown error (-2). When I type "idevicepair pair" in the terminal, it gives me the following message: ERROR: Could not validate with device d91d11bb8bf8225ab0dd67380ddec2a8afcbdc58 because a passcode is set. Please enter the passcode on the device and retry. However, on the iPhone itself I do not receive the "trust this device?" message, and thus am unable to continue. Rebooting the iPhone or computer does not help. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libimobiledevice in Ubuntu. https://bugs.launchpad.net/bugs/1799913 Title: Unhandled lockdown error (-2) - iphone ios 12 Status in libimobiledevice package in Ubuntu: Confirmed Bug description: Hi! On Ubuntu 18.10 when I connect my iPhone 8Plus with the computer and click on the Documents in the file manager, I got this error: Unhandled lockdown error (-2). I attached a screenshot about this error. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libimobiledevice/+bug/1799913/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
