I have a new Nokia 6220.  I can successfully sync files to the phone using the libmtp command line interface, and using gnomad.  I'm now trying to get Amarok to work.
I'm running Amarok v 1.4.10 with the 0.3.0-API patch for libmtp.
libmtp is version 0.3.4

I can set up the MTP device, it does read the phone model out correctly.  It can also read the files on the phone.
However, when I go to transfer, it immediately tells me that it was unable to transfer.  Looking in the debugging output, I see:

Code: Select all

Device 0 (VID=0421 and PID=008d) is UNKNOWN.
Please report this VID/PID and the device model to the libmtp development team
PTP: Opening session
amarok:     [Scrobbler] Handshake result parsed: challenge=761541ccfa5c44439bb005a646f842c2, submitUrl=http://87.117.229.205:80/protocol_1.1
amarok:     [Scrobbler] Nothing to schedule
amarok: BEGIN: ScanController::ScanController(CollectionDB*, bool, const QStringList&)
amarok: BEGIN: void ScanController::initIncremental()
amarok: END__: void ScanController::initIncremental() - Took 0.0048s
amarok: END__: ScanController::ScanController(CollectionDB*, bool, const QStringList&) - Took 0.005s
amarok: BEGIN: virtual void ThreadManager::Thread::run()
amarok: BEGIN: virtual bool ScanController::doJob()
amarok: END__: virtual bool ScanController::doJob() - Took 1.8e-05s
amarok: END__: virtual void ThreadManager::Thread::run() - Took 7.4e-05s
amarok: [CollectionDB] JobFinishedEvent from Incremental ScanController received.
amarok: [ThreadManager] Job completed: CollectionScanner. Jobs pending: 0
amarok: BEGIN: virtual ScanController::~ScanController()
amarok: END__: virtual ScanController::~ScanController() - Took 4e-05s
amarok: BEGIN: ScanController::ScanController(CollectionDB*, bool, const QStringList&)
amarok: BEGIN: void ScanController::initIncremental()
amarok: END__: void ScanController::initIncremental() - Took 0.0066s
amarok: END__: ScanController::ScanController(CollectionDB*, bool, const QStringList&) - Took 0.0077s
amarok: BEGIN: virtual void ThreadManager::Thread::run()
amarok: BEGIN: virtual bool ScanController::doJob()
amarok: END__: virtual bool ScanController::doJob() - Took 2.4e-05s
amarok: END__: virtual void ThreadManager::Thread::run() - Took 0.00015s
amarok: [CollectionDB] JobFinishedEvent from Incremental ScanController received.
amarok: [ThreadManager] Job completed: CollectionScanner. Jobs pending: 0
amarok: BEGIN: virtual ScanController::~ScanController()
amarok: END__: virtual ScanController::~ScanController() - Took 9.7e-05s
amarok: BEGIN: bool MediaDevice::disconnectDevice(bool)
amarok:   [MediaBrowser] disconnecting: hook=true
amarok:   [MediaBrowser] disconnecting: ok
PTP: Closing session

This is from me pressing Connect, pressing Transfer and pressing Disconnect.  The PTP: bit shows the connect and disconnect, but I am not seeing any debugging output from the actual transfer.  Looking at the source, it seems the transfer should be generating some debugging output.

What's the next step in debugging this situation?