As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 1146, RDU-PHL - THE CREW RECEIVED IDG 2 BUS EICAS MESSAGE DURING FLIGHT. THE MESSAGE WAS CLEARED BY FOLLOWING THE QRH PROCEDURES. AFTER PARKING AT THE GATE THE CREW NOTICED A STRONG ELECTRICAL ODOR AND SLIGHT HAZE. MAINTENANCE PERSONNEL FOUND THE EXTERNAL POWER MODULE BURNT. THE EXTERNAL POWER MODULE WAS REPLACED AND THE RIGHT ENGINE INTEGRATED DRIVE GENERATOR.