Xcode doesn't see my iOS device but iTunes does

Question

I have a strange problem.

I have an iPad with iOS 5.0.1 (9A405) and iOS SDK 5.0.1 with Xcode 4.2 (Build 4C199) installed on my Mac.

Xcode doesn't see my device. It says "iOS Device" not "Sauron's iPad" as usual.
(I am sure that device is connected because I see it in iTunes.) Xcode denies to start my application on device. It says:

"Xcode cannot run using selected device. No provisioned iOS devices are available with a compatible iOS version. Connect an iOS device with a recent enough version of iOS to run your application or choose an iOS simulator as the destination."

Xcode sees my other iPad with iOS 4.3.3 and can run applications on this device. I have tried to restart my Mac - without result.

I also checked provisioning profile, developer certificate, etc.

Does anybody have ideas?

Answer 1

Even though this one does not address the specific problem of the OP, it might be a solution for other people finding this question.

In some circumstances, Xcode will not recognise (won't even see) a connected device that was previously recognised, even though there were no changes in Mac OS/iOS/Xcode versions. This seems to happen if you connect the device while the Mac and/or the device are locked when you connect them. The device will ask if you want to trust the computer even though you already did so, but the device will still not be visible in Xcode.

Restarting Xcode or the device do not seem to have any effect. One solution is to reboot the Mac. Another much quicker solution is to restart usbmuxd:

1. Quit Xcode
2. Disconnect the device
3. In a terminal window, type: sudo pkill usbmuxd (it will be restarted again automatically)
4. Restart Xcode
5. Connect the device

Your device should now be visible again in Xcode!

Hope that helps a few people. Apparently it does!