As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 380 RECEIVED CABIN ALTITUDE CAUTION. CREW COMPLIED WITH QRH DECLARED EMERGENCY AND DONNED O2 MASKS AND DESCENDED TO FL 200. CREW WAS ABLE TO STABILIZE CABIN PRESSURE IN MANUAL. PASSENGER O2 MASKS DID NOT DEPLOY. CREW HAS ELECTED TO CONTINUE ON TO SNA. FOUND SAFETY VALVE SEAL TORN AND LEAKING. MAINTENANCE IN PROGRESS.