[xubuntu] Laptop N43SN - Can't read dvds burned by the recorder

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http://ubuntuforums.org – Hi. I'm having a problem where my laptop dvd drive does not recognizes data dvds burned by itself. I'm having to use a external dvd drive to read my dvds. This is absolutely weird because my laptop drive records just fine. Using xubuntu 12.04. Ubuntu had the same problem. dmesg | grep "sr0" [12331.669921] sr 2:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [12331.669929] sr 2:0:0:0: [sr0] Sense Key : Medium Error [current] [12331.669939] sr 2:0:0:0: [sr0] Add. Sense: Cannot read medium - unknown format [12331.669951] sr 2:0:0:0: [sr0] CDB: Read(10): 28 00 00 (Hardware)