As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEN - FLT 1315 - AFTER LANDING, THE PASSENGERS REPORTED SMOKE IN REAR OF THE CABIN. BOTH BLEEDS WERE TURNED OFF. LEFT AIR CYCLE MACHINE (ACM) HAD FAILED. THE SMOKE WAS FROM THE ACM OIL. ACM ON LT SIDE WAS DEFERRED. NO FURTHER PROBLEMS NOTED. (X)