As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCDU NR 1 & 2 BLACKED OUT SEVERAL TIMES FOR SEVERAL MINUTES INDEPENDENTLY AND CAME BACK ON THEIR OWN. NR 2 FLIGHT DIRECTOR SEEMED TO WANDER BOTH VERTICALLY AND LATERALLY 300 FEET. *S/D* RESET FMGC 1 AND 2 CB'S, OPS CHECKS NORMAL. NO ADDITIONAL PROBLEMS HAVE BEEN IDENTIFIED.